Document:

Exhibit 4.10 Form of Ninety-Ninth Supplement Indenture

                                        NINETY-NINTH SUPPLEMENTAL INDENTURE

                                        Southern California Edison Company

                                                        to

                                               The Bank of New York

                                                        and

                                                  D. G. Donovan,

                                                     Trustees

                                            DATED AS OF _________, 2003

                  This Ninety-Ninth Supplemental Indenture, dated as of the ____ day of_________, 2003, is
entered into by and between Southern California Edison Company (between 1930 and 1947 named "Southern California
Edison Company Ltd."), a corporation duly organized and existing under and by virtue of the laws of the State of
California and having its principal office and mailing address at 2244 Walnut Grove Avenue, in the City of
Rosemead, County of Los Angeles, State of California 91770, and qualified to do business in the States of
Arizona, New Mexico, and Nevada (hereinafter sometimes termed the "Company"), and The Bank of New York, a
corporation duly organized and existing under and by virtue of the laws of the State of New York, acting through
its agent, BNY Midwest Trust Company with its principal office and mailing address at 2 North LaSalle Street, in
the City of Chicago, State of Illinois 60602 (successor Trustee to Harris Trust and Savings Bank), and D. G.
Donovan of 2 North LaSalle Street, in the City of Chicago, State of Illinois 60602 (successor Trustee to R. G.
Mason, who was successor Trustee to Wells Fargo Bank, National Association, which was successor Trustee to
Security Pacific National Bank, formerly named Security First National Bank and Security-First National Bank of
Los Angeles, successor, by consolidation and merger, to Pacific-Southwest Trust & Savings Bank), as Trustees
(hereinafter sometimes termed the "Trustees");

                  WITNESSETH:

                  WHEREAS, the Company heretofore executed and delivered to said Harris Trust and Savings Bank
and said Pacific-Southwest Trust & Savings Bank, Trustees, a certain Indenture of Mortgage or Deed of Trust dated
as of October 1, 1923, which said Indenture was duly filed for record and recorded in the offices of the
respective recorders of the following counties:  in the State of California-Fresno County, Volume 397 of Official
Records, page 1; Imperial County, Book 1174 of Official Records, page 966; Inyo County, Volume 154 of Official
Records, page 417; Kern County, Book 379 of Trust Deeds, page 196; Kings County, Volume 84 of Deeds, page 1; Los
Angeles County, Book 2963 of Official Records, page 1; Madera County, Volume 9 of Official Records, page 63;
Merced County, Volume 363 of Official Records, page 1; Modoc County, Volume 230 of Official Records, page 119 et
seq.; Mono County, Volume 64 of Official Records, page 29; Orange County, Book 496 of Deeds, page 1; Riverside
County, Book 594 of Deeds, page 252; San Bernardino County, Book 825 of Deeds, page 1; San Diego County, Series 5
Book 1964, page 84061; Santa Barbara County, Book 229 of Deeds, page 30; Stanislaus County, Volume 465 of
Official Records, page 370; Tulare County, Volume 50 of Official Records, page 1; Tuolumne County, Volume 274 of
Official Records, page 568; and Ventura County, Volume 33 of Official Records, page 1; in the State of
Nevada-Clark County, Book 8 of Mortgages; Churchill County, Book 40 of Official Records, page 235; Lyon County,
Book 39 of Mortgages, page 1; Mineral County, Book 13 of Official Records, page 794; Pershing County, Book 15 of
Official Records, page 612; and Washoe County, Book 83 of Mortgages, page 301; in the State of Arizona-La Paz
County, Instrument No. 83-000212 of Official Records; Mohave County, Book 11 of Realty Mortgages; Maricopa
County, Docket 4349 of Official Records, page 197; and Yuma County, Docket 369, page 310; and in the offices of
the county clerks of the following counties in the State of New Mexico-McKinley County, Book Mtg. 50, page 187
and filed as Document No. 10536 in the Chattel Records; and San Juan County, Book Mtg. 630, page 13 and filed as
Document No. 17838 in the Chattel Records (hereinafter referred to as the "Original Indenture"), to secure the
payment of the principal of and interest on all bonds of the Company at any time outstanding thereunder, and (as
to certain such filings or recordings) the principal of and interest on all Debentures of 1919 (referred to in
the Original Indenture and now retired) outstanding; and

                  WHEREAS, the Company has heretofore executed and delivered to the Trustees ninety-eight certain
supplemental Indentures, dated, respectively, as of March 1, 1927, April 25, 1935, June 24, 1935, September 1,
1935, August 15, 1939, September 1, 1940, January 15, 1948, August 15, 1948, February 15, 1951, August 15, 1951,
August 15, 1953, August 15, 1954, April 15, 1956, February 15, 1957, July 1, 1957, August 15, 1957, August 15,
1958, January 15, 1960, August 15, 1960, April 1, 1961, May 1, 1962, October 15, 1962, May 15, 1963, February 15,
1964, February 1, 1965, May 1, 1966, August 15, 1966, May 1, 1967, February 1, 1968, January 15, 1969, October 1,
1969, December 1, 1970, September 15, 1971, August 15, 1972, February 1, 1974, July 1, 1974, November 1, 1974,
March 1, 1975, March 15, 1976, July 1, 1977, November 1, 1978, June 15, 1979, September 15, 1979, October 1,
1979, April 1, 1980, November 15, 1980, May 15, 1981, August 1, 1981, December 1, 1981, January 16, 1982, April
15, 1982,

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November 1, 1982, November 1, 1982, January 1, 1983, May 1, 1983, December 1, 1984, March 15, 1985, October 1,
1985, October 15, 1985, March 1, 1986, March 15, 1986, April 15, 1986, April 15, 1986, July 1, 1986, September 1,
1986, September 1, 1986, December 1, 1986, July 1, 1987, October 15, 1987, November 1, 1987, February 15, 1988,
April 15, 1988, July 1, 1988, August 15, 1988, September 15, 1988, January 15, 1989, May 1, 1990, June 15, 1990,
August 15, 1990, December 1, 1990, April 1, 1991, May 1, 1991, June 1, 1991, December 1, 1991, February 1, 1992,
April 1, 1992, July 1, 1992, July 15, 1992, December 1, 1992, January 15, 1993, March 1, 1993, June 1, 1993, June
15, 1993, July 15, 1993, September 1, 1993, October 1, 1993, February 21, 2002, and February 15, 2003, which
modify, amend and supplement the Original Indenture, such Original Indenture, as so modified, amended and
supplemented, being hereinafter referred to as the "Amended Indenture"; and

                  WHEREAS, there have been issued and are now outstanding and entitled to the benefits of the
Amended Indenture, First and Refunding Mortgage Bonds as follows:

              Series                        Due Date                       Principal Amount
              ------                        --------                       ----------------
             86D,E,F&G                        2008                              196,000,000
             87A,B,C&D                        2008                              135,000,000
                91A                           2021                               48,920,000
                91D                           2017                               28,585,000
                92C                           2027                               30,000,000
                92E                           2024                              190,000,000
                93C                           2026                              300,000,000
                93D                           2023                              154,540,000
                93G                           2025                              225,000,000
                93H                           2004                              125,000,000
                93I                           2018                              200,000,000
               2002B                          2005                              700,000,000
               2002C                          2004                              300,000,000
               2003A                          2007                              965,965,000

                  WHEREAS, the Company proposes presently to issue in fully registered form only, without
coupons, $___________ aggregate principal amount of a new series of the Company's First and Refunding Mortgage
Bonds, pursuant to a resolution of the Board of Directors or the Executive Committee of the Board of Directors of
the Company, said new series to be designated as Series 2003B (the "Bonds"), and the Company's authorized bonded
indebtedness has been increased to provide for the issuance of said Bonds; and

                  WHEREAS, the Company has acquired real and personal property since the execution and delivery
of the Ninety-Eighth Supplemental Indenture which, with certain exceptions, is subject to the lien of the Amended
Indenture by virtue of the after-acquired property clauses and other clauses thereof, and the Company now desires
in this Ninety-Ninth Supplemental Indenture (hereinafter sometimes referred to as this "Supplemental Indenture")
expressly to convey and confirm unto the Trustees all properties, whether real, personal or mixed, now owned by
the Company (with the exceptions hereinafter noted); and

                  WHEREAS, for the purpose of further safeguarding the rights and interests of the holders of
bonds under the Amended Indenture, the Company desires, in addition to such conveyance, to enter into certain
covenants with the Trustees; and

                  WHEREAS, the making, executing, acknowledging, delivering and recording of this Supplemental
Indenture have been duly authorized by proper corporate action of the Company, and the Trustees have each duly
determined to execute and accept this Supplemental Indenture;

                  NOW, THEREFORE, in order further to secure the payment of the principal of and interest on all
of the bonds of the Company at any time outstanding under the Amended Indenture, as from time to time amended and
supplemented, including specifically, but without limitation, the First and Refunding Mortgage Bonds, Series 86D,
Series 86E, Series 86F, Series 86G, Series 87A, Series 87B, Series 87C,

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Series 87D, Series 91A, Series 91D, Series 92C, Series 92E, Series 93C, Series 93D, Series 93F, Series 93G,
Series 93H, Series 93I, Series 2002B, Series 2002C, and Series 2003A, referred to above, all of said bonds having
been heretofore issued and being now outstanding, and the Bonds, of the aggregate principal amount of
$______________, to be presently issued and outstanding; and to secure the performance and observance of each and
every of the covenants and agreements contained in the Amended Indenture, and without in any way limiting (except
as hereinafter specifically provided) the generality or effect of the Original Indenture or any of said
Supplemental Indentures executed and delivered prior to the execution and delivery of this Supplemental Indenture
insofar as by any provision of any said Indenture any of the properties hereinafter referred to are subject to
the lien and operation thereof, but to such extent (except as hereinafter specifically provided) confirming such
lien and operation, and for and in consideration of the premises, and of the sum of One Dollar ($1.00) to the
Company duly paid by the Trustees, at or upon the ensealing and delivery of these presents (the receipt whereof
is hereby acknowledged), the Company has executed and delivered this Supplemental Indenture and has granted,
bargained, sold, aliened, released, conveyed, assigned, transferred, warranted, mortgaged, and pledged, and by
these presents does grant, bargain, sell, alien, release, convey, assign, transfer, warrant, mortgage, and pledge
unto the Trustees, their successors in trust and their assigns forever, in trust, with power of sale, all of the
following:

                  All and singular the plants, properties (including goods which are or are to become fixtures),
equipment, and generating, transmission, feeding, storing, and distributing systems, and facilities and utilities
of the Company in the Counties of Fresno, Imperial, Inyo, Kern, Kings, Los Angeles, Madera, Merced, Modoc, Mono,
Orange, Riverside, San Bernardino, San Diego, Santa Barbara, Stanislaus, Tulare, Tuolumne, and Ventura, in the
State of California, Churchill, Clark, Lyon, Mineral, Pershing, and Washoe, in the State of Nevada, La Paz,
Maricopa, and Mohave, in the State of Arizona, and McKinley and San Juan, in the State of New Mexico, and
elsewhere either within or without said States, with all and singular the franchises, ordinances, grants,
easements, rights-of-way, permits, privileges, contracts, appurtenances, tenements, and other rights and property
thereunto appertaining or belonging, as the same now exist and as the same or any and all parts thereof may
hereafter exist or be improved, added to, enlarged, extended or acquired in said Counties, or elsewhere either
within or without said States;

                  Together with, to the extent permitted by law, all other properties, real, personal, and mixed
(including goods which are or are to become fixtures), except as herein expressly excepted, of every kind,
nature, and description, including those kinds and classes of property described or referred to (whether
specifically or generally or otherwise) in the Original Indenture and/or in any one or more of the indentures
supplemental thereto, now or hereafter owned, possessed, acquired or enjoyed by or in any manner appertaining to
the Company, and the reversion and reversions, remainder and remainders, tolls, incomes, revenues, rents, issues,
and profits thereof; it being hereby intended and expressly agreed that all the business, franchises, and
properties, real, personal, and mixed (except as herein expressly excepted), of every kind and nature whatsoever
and wherever situated, now owned, possessed, or enjoyed, and which may hereafter be in anywise owned, possessed,
acquired, or enjoyed by the Company, shall be as fully embraced within the provisions hereof and be subject to
the lien created hereby and by the Original Indenture and said supplemental indentures executed and delivered
prior to the execution and delivery of this Supplemental Indenture, as if said properties were particularly
described herein;

                  Saving and excepting, however, anything contained herein or in the granting clauses of the
Original Indenture, or of the above mentioned Indentures supplemental thereto, or elsewhere contained in the
Original Indenture or said supplemental Indentures, to the contrary notwithstanding, from the property hereby or
thereby mortgaged and pledged, all of the following property (whether now owned by the Company or hereafter
acquired by it):  all bills, notes, warrants, customers' service and extension deposits, accounts receivable,
cash on hand or deposited in banks or with any governmental agency, contracts, choses in action, operating
agreements and leases to others (as distinct from the property leased and without limiting any rights of the
Trustees with respect thereto under any of the provisions of the Amended Indenture), all bonds, obligations,
evidences of indebtedness, shares of stock and other securities, and certificates or evidences of interest
therein, all office furniture and office equipment, motor vehicles and tools therefor, all materials, goods,
merchandise, and supplies acquired for the purpose of sale in the ordinary course of business or for consumption
in the operation of any property of the Company, and all electrical

Page 4

energy and other materials or products produced by the Company for sale, distribution, or use in the ordinary
conduct of its business--other than any of the foregoing which has been or may be specifically transferred or
assigned to or pledged or deposited with the Trustees, or any of them, under the Amended Indenture, or required
by the provisions of the Amended Indenture, so to be; provided, however, that if, upon the occurrence of a
default under the Amended Indenture, the Trustees, or any of them, or any receiver appointed under the Amended
Indenture, shall enter upon and take possession of the mortgaged and pledged property, the Trustees, or such
Trustee or such receiver may, to the extent permitted by law, at the same time likewise take possession of any
and all of the property excepted by this paragraph then on hand which is used or useful in connection with the
business of the Company, and collect, impound, use, and administer the same to the same extent as if such
property were part of the mortgaged and pledged property and had been specifically mortgaged and pledged
hereunder, unless and until such default shall be remedied or waived and possession of the mortgaged and pledged
property restored to the Company, its successors or assigns, and provided further, that upon the taking of such
possession and until possession shall be restored as aforesaid, all such excepted property of which the Trustees,
or such Trustee or such receiver shall have so taken possession, shall be and become subject to the lien hereof,
subject, however, to any liens then existing on such excepted property.

                  And the Company does hereby covenant and agree with the Trustees, and the Trustees with the
Company, as follows:

                                                      PART I

                  The Trustees shall have and hold all and singular the properties conveyed, assigned, mortgaged
and pledged hereby or by the Amended Indenture, including property hereafter as well as heretofore acquired, in
trust for the equal and proportionate benefit and security of all present and future holders of the bonds and
interest obligations issued and to be issued under the Amended Indenture, as from time to time amended and
supplemented, without preference of any bond over any other bond by reason of priority in date of issuance,
negotiation, time of maturity, or for any other cause whatsoever, except as otherwise in the Amended Indenture,
as from time to time amended and supplemented, permitted, and to secure the payment of all bonds now or at any
time hereafter outstanding under the Amended Indenture, as from time to time amended and supplemented, and the
performance of and compliance with the covenants and conditions of the Amended Indenture, as from time to time
amended and supplemented, and under and subject to the provisions and conditions and for the uses set forth in
the Amended Indenture, as from time to time amended and supplemented.

                                                      PART II

                  Article I to Article Twenty-One, inclusive, of the Amended Indenture are hereby incorporated by
reference herein and made a part hereof as fully as though set forth at length herein.

                                                     PART III

                  All of the terms appearing herein shall be defined as the same are now defined under the
provisions of the Amended Indenture, except when expressly herein otherwise defined.

                                                      PART IV

                  Pursuant to Section 1 of Article Five of the Original Indenture, as amended by Part IV, Subpart
C, of the Sixth Supplemental Indenture, dated as of September 1, 1940, the notice to be given with respect to the
redemption of the Bonds in whole or in part, shall be limited to and shall consist of the giving by the Company
or The Bank of New York, Trustee, of a notice in writing (including by facsimile transmission) of such
redemption, at least 30 days, but not more than 60 days, prior to the date fixed for redemption to the holder of
each Bond called for redemption at the holder's last address shown on the registry books of the Company.  Failure
to so provide such notice to the holder of any Bond shall not affect the validity of the redemption proceedings
with respect to any other Bond.

Page 5

                                                      PART V

                  The Bonds shall be in substantially the form set forth in a resolution of the Board of
Directors or the Executive Committee of the Board of Directors of the Company, and may have placed thereon such
letters, numbers or other marks of identification and such legends or endorsements as set forth in this
Supplemental Indenture or as may be required to comply with the Securities Act of 1933, as amended (the
"Securities Act"), any other laws, any other rules of the Securities and Exchange Commission or any securities
exchange, or as may, consistently herewith, be determined to be necessary or appropriate by the officers
executing the Bonds, as evidenced by their execution of the Bonds.  The Bonds will be issued in minimum
denominations of $250,000 and integral multiples of $1,000 in excess thereof.

                  The Bonds shall initially be represented by one or more securities in registered, global form
without interest coupons ("Global Bonds").  Each certificate for Global Bonds shall represent the aggregate
principal of outstanding Bonds from time to time endorsed thereon and the aggregate principal amount of
outstanding Bonds represented thereby may from time to time be reduced or increased, as appropriate, to reflect
exchanges and redemptions.  Any endorsement of a Global Bond certificate to reflect the amount of any increase or
decrease in the aggregate principal amount of outstanding Bonds represented thereby shall be made by BNY Midwest
Trust Company, as Agent for The Bank of New York, Trustee, as registrar for the Bonds (the "Bond Registrar"), in
accordance with instructions given by the registered holder thereof.

                  The Company initially appoints The Depository Trust Company ("DTC") to act as depositary with
respect to the Global Bonds (together with any successor, the "Depositary").  Each certificate representing
Global Bonds shall bear a legend in substantially the following form (the "Global Bond Legend"):

                  Unless this certificate is presented by an authorized representative of The Depository Trust
                  Company, a New York corporation ("DTC"), to Southern California Edison Company or its Agent for
                  registration or transfer, exchange, or payment, and any certificate issued is registered in the
                  name of Cede & Co. or in such other name as is requested by an authorized representative of DTC
                  (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized
                  representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR
                  TO ANY PERSON IS WRONGFUL inasumch as the registered owner hereof, Cede & Co., has an interest
                  herein.

                  Beneficial interests in the Global Bonds may not be exchanged for Bonds in certificated form
("Certificated Bonds") except in the limited circumstances set forth below in this Supplemental Indenture.
Certificates representing Certificated Bonds will not bear the Global Bond Legend.

                                                      PART VI

                  The transfer and exchange of Global Bonds or beneficial interests in Global Bonds shall be
effected through the Depositary, in accordance with the terms of the Amended Indenture (including the restriction
on transfer set forth herein) and the procedures of the Depositary.

                  A Global Bond may be exchanged for Certificated Bonds if (a) the Depositary for the Global Bond
notifies the Company that the Depositary is unwilling or unable to continue as to act as Depositary for the
Global Bond or has ceased to be a clearing agency registered under the Securities Exchange Act of 1934, and in
either case the Company fails to appoint a successor Depositary within 90 days after delivery of such notice;
(b) the Company notifies the Bond Registrar in writing that it has elected to cause the issuance of Certificated
Bonds; or (c) there has occurred and is continuing a default with respect to the Bonds under the Amended
Indenture.  Certificated Bonds delivered in exchange for

Page 6

any Global Bond or beneficial interests in Global Bonds will be executed by the Company, authenticated by The
Bank of New York, as Trustee, registered in the names, and issued in any approved denominations, requested by or
on behalf of the Depositary (in accordance with its customary procedures).

                  When Certificated Bonds are presented to the Bond Registrar with a request to register the
transfer of the Certificated Bonds or to exchange such Certificated Bonds for an equal principal amount of
Certificated Bonds of other authorized denominations, the Bond Registrar shall register the transfer or make the
exchange as requested if its requirements for such transactions are met.

                                                     PART VII

                  All, but only, the duties, responsibilities, liabilities, immunities, rights, powers, and
indemnities against liability, of the Trustees and each of them, with respect to the trust created by the Amended
Indenture, are hereby assumed by and given to the Trustees, and each of them, with respect to the trust hereby
created, and are so assumed and given subject to all the terms and provisions with respect thereto as set forth
in the Amended Indenture, as fully and to all intents and purposes as if the same were herein set forth at
length; and this Supplemental Indenture is executed by the Trustees for the purpose of evidencing their consent
to the foregoing.

                  The recitals contained herein, except the recital that the Trustees have each duly determined
to execute and deliver this Supplemental Indenture, shall be taken as the statements of the Company, and the
Trustees assume no responsibility for the correctness thereof.  The Trustees make no representations as to the
validity of this Supplemental Indenture.

                                                     PART VIII

                  As amended and supplemented by this Supplemental Indenture, the Amended Indenture is in all
respects ratified and confirmed, and the Original Indenture and all said indentures supplemental thereto
including this Supplemental Indenture, shall be read, taken, and considered as one instrument, and the Company
agrees to conform to and comply with all and singular the terms, provisions, covenants, and conditions set forth
therein and herein.

                                                      PART IX

                  In case any one or more of the provisions contained in this Supplemental Indenture should be
invalid, illegal, or unenforceable in any respect, such invalidity, illegality, or unenforceability shall not
affect any other provisions contained in this Supplemental Indenture, and, to the extent and only to the extent
that any such provision is invalid, illegal, or unenforceable, this Supplemental Indenture shall be construed as
if such provision had never been contained herein.

                                                      PART X

                  This Supplemental Indenture may be simultaneously executed and delivered in any number of
counterparts, each of which, when so executed and delivered, shall be deemed to be an original.

Page 7

                  IN WITNESS WHEREOF, the Company has caused its corporate name and seal to be hereunto affixed
and this Supplemental Indenture to be signed by its Chairman of the Board, its Chief Executive Officer, its
President, or one of its Vice Presidents and attested by the signature of its Secretary or one of its Assistant
Secretaries, for and in its behalf; said The Bank of New York has caused its corporate name to be hereunto
affixed, and this Supplemental Indenture to be signed, by one of its Vice Presidents or Assistant Vice Presidents
or Agents; and said D. G. Donovan has hereunto executed this Supplemental Indenture; all as of the day and year
first above written.  Executed in counterparts and in multiple.

                                                              SOUTHERN CALIFORNIA EDISON COMPANY

                                                              [Name]
                                                              [Title]

Attest:

[Name]
[Title]

(Seal)

                                                              THE BANK OF NEW YORK, Trustee

                                                              Name:
                                                              Agent

                                                              D. G. DONOVAN
                                                              Trustee

Page 8

STATE OF CALIFORNIA        }
                                    }  ss.
COUNTY OF LOS ANGELES      }

         On this ___ day of ________, 2003, before me, ___________, a Notary Public, personally appeared
_____________and ____________, personally known to me (or proved to me on the basis of satisfactory evidence) to
be the persons whose names are subscribed to the within instrument and acknowledged to me that they executed the
same in their authorized capacities, and that by their signatures on the instrument the persons, or the entity on
behalf of which the persons acted, executed the instrument.

         WITNESS my hand and official seal.

                                                              Notary Public, State of California

(Seal)

My Commission expires on ____________________.

Page 9

STATE OF ILLINOIS }
                           }  ss.
COUNTY OF COOK    }

         On this ____ day of ___________, 2003, before me, __________________, a Notary Public, personally
appeared _______________, Agent of THE BANK OF NEW YORK, Trustee, personally known to me (or proved to me on the
basis of satisfactory evidence) to be the person whose name is subscribed to the within instrument and
acknowledged to me that he executed the same in his authorized capacity, and that by his signature on the
instrument the person, or entity on behalf of which the person acted, executed the instrument.

         WITNESS my hand and official seal.

                                                     Notary Public, State of Illinois

(Seal)

My Commission expires on ________________________.

STATE OF ILLINOIS }
                           }  ss.
COUNTY OF COOK    }

         On this ____ day of ___________, 2003, before me, __________________, a Notary Public, personally
appeared D. G. DONOVAN, Trustee, personally known to me (or proved to me on the basis of satisfactory evidence)
to be the person whose name is subscribed to the within instrument and acknowledged to me that he executed the
same in his authorized capacity, and that by his signature on the instrument the person, or entity on behalf of
which the person acted, executed the instrument.

         WITNESS my hand and official seal.

                                                     Notary Public, State of Illinois

(Seal)

My Commission expires on ___________________________.S4 Exhibit 4.11 Form of First and Refunding Mortgage Bonds, Series 2003B, Due 2007

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York
corporation ("DTC"), to Southern California Edison Company or its Agent for registration or transfer, exchange,
or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is
requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity
as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasumch as the registered owner hereof, Cede & Co., has an interest
herein.

                                            SOUTHERN CALIFORNIA EDISON COMPANY
                                First and Refunding Mortgage Bonds, Series 2003B, Due 2007

No. R-1                                                                $_______________
                                                                       CUSIP NO. ______
                                                                       ISIN No. _______

         SOUTHERN CALIFORNIA EDISON COMPANY, a corporation organized and existing under and by virtue of the laws of the
State of California (hereinafter called the "Company"), for value received, hereby promises to pay to Cede & Co., the
registered owner hereof, the principal sum of $__________ on February 15, 2007, and to pay interest on the unpaid
principal amount hereof to the registered owner hereof from _________, 2003, until said principal sum shall be paid, at
the rate of 8.00% per annum, payable semiannually on February 15 and August 15 in each year.  Such interest shall be paid
to the person in whose name this Bond is registered at the close of business on the February 1 preceding such February 15
and the August 1 preceding such August 15, whether or not a business day.

         The principal of and interest on this Bond are payable at the offices of BNY Midwest Trust Company, as Agent for
The Bank of New York, Trustee, in Chicago, Illinois, or at such other agency or agencies as may be designated by the
Company, in such coin or currency of the United States of America as at the time of payment is legal tender for public
and private debts.

         This Bond is one of a series, designated as "Series 2003B, Due 2007," of a duly authorized issue of bonds of the
Company, known as its "First and Refunding Mortgage Bonds," issued and to be issued in one or more series under and all
equally and ratably secured by a Trust Indenture dated as of October 1, 1923, and indentures supplemental thereto,
including the Ninety-Ninth Supplemental Indenture, dated as of ___________, 2003, which have been duly executed,
acknowledged and delivered by the Company to The Bank of New York and D. G. Donovan, or one of their predecessors, as
Trustees, to which original indenture and indentures supplemental thereto (collectively, the "Trust Indenture") reference
is hereby made for a description of the property, rights and

Page 1

franchises thereby mortgaged and pledged, the nature and extent of the security thereby created, the rights of the
holders of this Bond and of the Trustees in respect of such security, and the terms, restrictions and conditions upon
which the bonds are issued and secured.

         This Bond may be redeemed, in whole or in part, at the option of the Company, at any time prior to its maturity,
after notice given by first class mail, postage prepaid, to the registered owner hereof at the last address shown on the
registry books of the Company, by the Company or The Bank of New York, Trustee, at least 30 days, but not more than 60
days, before the date fixed for redemption, at a redemption price equal to the greater of (1) the principal amount
redeemed or (2) the sum of the present values of the remaining scheduled payments of principal and interest on the
portion of this Bond being redeemed, discounted to the date fixed for redemption on a semi-annual basis (assuming a
360-day year consisting of twelve 30-day months) at the Treasury Yield (as defined below) plus 50 basis points, plus in
each case accrued and unpaid interest to the date fixed for redemption.

         "Treasury Yield" means, for any date fixed for redemption, the rate per year equal to the semi-annual equivalent
yield to maturity of the Comparable Treasury Issue (as defined below), assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable Treasury Price (as defined below) for the
date fixed for redemption.

         "Comparable Treasury Issue" means the United States Treasury security selected by an Independent Investment
Banker (as defined below) as having a maturity comparable to the remaining term to stated maturity of this Bond that would
be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of
corporate debt securities of comparable maturity to the remaining term of this Bond.

         "Comparable Treasury Price" means, for any date fixed for redemption, (1) the average of the bid and asked prices
for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) on the third business
day preceding the date fixed for redemption, as set forth in the daily statistical release (or any successor release)
published by the Federal Reserve Bank of New York and designated "Composite 3:30 p.m. Quotations for U.S. Government
Securities" or (2) if that release (or any successor release) is not published or does not contain those prices on that
business day, (A) the average of the Reference Treasury Dealer Quotations (as defined below) for the date fixed for
redemption, or (B) if the Independent Investment Banker obtains fewer than four Reference Treasury Dealer Quotations, the
average of all of the Quotations.

         "Independent Investment Banker" means Citigroup Global Markets Inc. or its successor or, if such firm or its
successor is unwilling or unable to select the Comparable Treasury Issue, one of the remaining Reference Treasury Dealers
(as

Page 2

defined below) appointed by The Bank of New York, Trustee, after consultation with the Company.

         "Reference Treasury Dealer" means (1) Citigroup Global Markets Inc. and any other primary U.S. Government
securities dealer in New York City (a "Primary Treasury Dealer") designated by, and not affiliated with, Citigroup Global
Markets Inc. or its successors, provided, however, that if Citigroup Global Markets Inc. or any of its designees ceases
to be a Primary Treasury Dealer, the Company will appoint another Primary Treasury Dealer as a substitute, and (2) any
other Primary Treasury Dealer selected by the Company.

         "Reference Treasury Dealer Quotations" means, for each Reference Treasury Dealer and any date fixed for
redemption, the average, as determined by the Independent Investment Banker, of the bid and asked prices for the
Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the
Independent Investment Banker by the Reference Treasury Dealer at 5:00 p.m. on the third business day preceding the date
fixed for redemption.

         If the Company elects to redeem fewer than all the Series 2003B Bonds, The Bank of New York, Trustee, will select
the particular bonds to be redeemed on a pro rata basis, by lot or by such other method of random selection, if any, that
The Bank of New York, Trustee, deems fair and appropriate.

         Any notice of redemption, at the Company's option, may state that the redemption will be conditional upon receipt
by the paying agent, on or prior to the date fixed for the redemption, of money sufficient to pay the principal of and
premium, if any, and interest, if any, on the Series 2003B Bonds to be redeemed and that if the money has not been so
received, the notice will be of no force and effect and the Company will not be required to redeem this Bond.

         The Trust Indenture makes provision for a Special Trust Fund and permits the use of moneys therein for the
purpose, among others, of redeeming or purchasing this Bond.

         If default shall be made in the payment of any installment of principal of or interest on this Bond or in the
performance or observance of any of the covenants and agreements contained in the Trust Indenture, and such default shall
continue as provided in the Trust Indenture, then the principal of this Bond may be declared and become due and payable
as provided in the Trust Indenture.

         This Bond is transferable only on the books of the Company at any of the places designated above for the payment
of the principal of and premium, if any, or interest on this Bond, or at such other agency or agencies as may be
designated by the Company, by the registered owner or by an attorney of such owner duly authorized in writing, on
surrender hereof properly endorsed, and upon such surrender hereof, and the payment of charges, a new registered bond or
bonds of this series, of an equal aggregate

Page 3

principal amount, will be issued to the transferee in lieu hereof, as provided in the Trust Indenture.

         The terms of the Trust Indenture may be modified as set forth in the Trust Indenture; provided, however, that,
among other things, (a) the obligation of the Company to pay the principal of and premium, if any, and interest on all
bonds outstanding under the Trust Indenture, as at the time in effect, shall continue unimpaired, (b) no modification
shall give any of said bonds any preference over any other of said bonds, and (c) no modification shall authorize the
creation of any lien prior to the lien of the Trust Indenture on any of the trust property.

         No recourse shall be had for the payment of the principal of and premium, if any, or interest on this Bond, or
any part thereof, or for or on account of the consideration herefor, or for any claim based hereon, or otherwise in
respect hereof, or of the Trust Indenture, against any past, present or future stockholder, officer or director of the
Company or of any predecessor or successor company, whether for amounts unpaid on stock subscriptions, or by virtue of
any statue or constitution, or by the enforcement of any assessment or penalty, or because of any representation or
inference arising from the capitalization of the Company or of such predecessor or successor company, or otherwise; all
such liability being, by the acceptance hereof and as a part of the consideration for the issue hereof, expressly
released.

         This Bond shall not be valid or obligatory for any purpose until it shall have been authenticated by the
execution of the certificate of authentication hereon of The Bank of New York, Trustee, or its successor in trust.

         IN WITNESS WHEREOF, said Southern California Edison Company has caused this Bond to be executed in its name by
its President or one of its Vice Presidents and its corporate seal to be hereto affixed and attested by its Secretary or
one of its Assistant Secretaries, as of __________, 2003, such execution and attestation to be by manual or facsimile
signatures.

                                                            SOUTHERN CALIFORNIA EDISON COMPANY

ATTEST: ______________________                              By: ___________________________
              Assistant Secretary                                      Vice President

                                                   Trustee's Certificate

         This is to certify that this Bond is one of the Bonds, of the series designated therein, described and referred
to in the Trust Indenture within mentioned.

                                            THE BANK OF NEW YORK,
                                            TRUSTEE

                                            By _________________________________
                                                              Authorized Officer

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