The Washington times., 1906-01-05
COMMISSIONERS NOTICE.

OFFICE OF THE COMMISSIONER
OF THE DISTRICT OF COLUMBIA,
January 9, 1906 Ordered; That the
Rules and Regulations of the Dis
tTict of Columbia for the install
!stlon OF wires and apparatus for electric
light, heat and power are hereby
amended by making the following
changes therein. viz BY adding to rule
No, 80, section ID" the words. I'll
sockets and receptacles will be consid-
cred as using nothing smaller than six
teen Caudle-pOwer lamps. This viii pro-
hibit the Installation OF more than
twelve sockets. TeCeptacles or outlets on
any one branch circuit. Special permis-
sion may be given in writing by the
Electrical Engineer for departure from
this rule. IN the case OF outside lights,
nTe-proOr signs and Tor temporary dec
orRtive lighting when installed under the
requirements OF rule No, 40. BY add
ing TO rule No. 40 section "a the
words: Fibre, rubber or other sub
stances used 10 iusulaIe fixture CanOpies
from walls ana ceilings must be secure
ly and permanently riveted or fastened
10 the cdnoples. BY adding 10 rule No
!. the words. and viii be required
without further notice for ali apartment
houses, hotels, theaJers and other places
Of public asSC mbly. OF where the pro-
posed installation exceeds one hundred
sixteen candle-poWer lamps or their
equivalent. These plans and specihca-
ttOnS must be filed and approved by the
Electrical Engineer before work is com
menced." BY adding 10 rule No. the
words: ''and will be required with
houses, hotels, theaters and other places
of public assembly. or where the pro-
posed installation exceeds one hundred
sixteen candle-pOWeT lamps or their
equivalent. These plans and specihca-
lions must be filed and approved by the
Electrical Engineer before work Is COM
menced." By adding TO rule No 50, 10
be known as section X, the words
In all metal conduit systems. and
where flexible metallic cable is used in
place of a drawing system, all cut
outs. switches tOJheT than pendant
switches) and fuse blocks must be en-
closed in substantially made iron or steel
boxes. provided with covers. For boxes
smaller than eight inches by ten inches
metal at least one-siXteenth of an inch
IN thickness must be used. For boxes
eight inches 10y ten inches or larger
metal at least one-eighth inch ia thick
ness must be used Wooden boxes, lined
with iron. Will not be approved with
metal conduit systems. BY resembling
in rule No. 20, section "a. 80 the words:
with metal conduit systems the lining
Of either the box or the gutter must be
of One-siNteenth inch galvanized, painted
or euameled iron, or preferably one
quarter inch slate or marble" and sub
stitutinG the following In lieu thereof:
With metal conduit systems and when
flexible metallic cable is used, cabinets
for enclosing tablet Cr panel boards must
be constructed OF galvanized, painted or
euameled iron cor OF stee) at least one
eighth inch in thickness. The backs may
he constructed of metal not less than
one-siNteenth inch in thickness, provided
least oue-eighth inch in thickness are
used TO suppoft the panel board. The
sides and back of the cabinet must be
securely fastened together so as to make
the box electrically continuous Lined
wooden cabinets viii not be approved
with metal conduit systems. The frames
forming the gutter or connection COM
partment must be OF at least one-half
Inch slate or marble, the door lining
may be of OEe-QuaTteT inch slate or
marble" BY adding 60 rule No. 80. to
be known as section y. the words
Where metal conduit systems are used
I'm fats, apartment houses. office build
ings or other places where meters gra
grouped together. each meter loop must
be run in metal conduite, terminating in
an outlet box or other approved metal
box placed adjacent 10 each meter" BY
adding to rule No. 90. to be known as
section IN" the words. Where an ex-
made in moulding or open work, the con
duir must terminate in an approved form
of outlet or junction box and the cJt-
out branch block, rosette, or other de
vice used at the branching point must
be enclosed in the outlet or junction
ton &C" the words: 'Double-pole
switches will be approved for cOnrolling
arc lamps on constant potential svs-
tens" and substituting in lieu thereof
the following. Singie-pOle switches
viii be approved for controlling arc
Where so used, whethar pendant, push
button, or snap switch. they shall be
OF ten-anperes capacity. Snap switches
must be indicating. Sipgle-pOle knife
blade switches VIII not be approved. "
HENRY Is. +. MA sEARI.AND, HENRY
>rs of the District of Columbia. 1t