The Key West citizen., 1954-02-22

AVV dHLPs LA AAs Ahs
200 amp. 2l1 in. 21a in.
400 amp. 3 in. ga In.
600 amp. 4 in. 412 in.
(c) Special permission may be
obtained from the Chief Electrical
Inspector for the installation of ser
vice conduit and conductors small
er than the minimum size speci-
fled in Table No. / provided the
electrical demand or load Is tenn
porary and less than 3O-ampere
for temporary service, bnl-boards,
and singlefamily residences.
(d) Service wires or circuit-wires
shall enter the meter cabinet or
switch without the use Of conceal
ed backing box.
(e) All buildings Of multiple oc-
cupancy (more than two) shall
have Independent central electric
meter room Of not less than three
feet by five feet by seven feet,
with sevenfoot ceiling height. This
meter room must be equipped with
a ventilated door accessible to all
occupancies of the building. The
purpose Of this room 10 to house
the main switch or main switches,
diSconnecting equipment and its
control devices. and all the meters
which serve the occupants through
out the entire building. The con-
struction of this room shall con-
form to the same type of material
and construction az the main build
ing. Service disconnecting switch
|es must be provided by the owner
or his agent for each service. ALI
service disconnecting switches
must be located In q convenient
and readily accessible place inside
the building when a meter room is
not available. The service discon-
Meeting switch or switches and
other disconnecting equipment lo-
Gated In enclosed or semi-enclosed
rear porches not exposed to the
weather shall be considered as
being located inside the building.
(f) In buildings Of single or dou-
bic occupancy, a meter room Is
not required. The service conduit
and conductors may extend into
each occupancy without controls
elsewhere. In each occupancy, how
ever, a diSconnecting fused-switch
or circuitIbreaker must be install
ed. The meter sockets must be
grouped and located at the near
est possible point to the diScon-
meeting switches or circuit+break-
ers.
(g) All main switches and SUBJ
main switches, when grouped in q
meter room or any other approved
accessible location, shall be plain
ly marked so that the division,
sub division, or separate occupan-
cies Of the building which they con-
trol, can be quickly and positively
identified. The mark Of identifica-
ton shall be securely affixed to
the switch to prevent its loss or
displacement.
(h) The master service for q
store or stores must, provide at
least 110-220 volt, three-wire, sin
gle-phaSe current or 110-220 volt,
four-wire, three-phaSe current of
0-ampere capacity TO each store.
I'D The sub-feed to each store
must provide at least 110-22O volt,
three-wire. single-phase current or
ll0-220 volt, four-wire, three-phase
current Of 30-ampere capacity to
each store, and conductor size shall
be not less than No. s. Conduit
Iraceway to each store shall be not
less than 1l1-inch trade size and If
installed underground or trapped,
add one-half inch to the required
overhead size.
ID Each sub-feeder must be pro-
tected in the meter room with an
approved indicating-type of circuit
breaker or a fused-switch of not
less than 6o-ampere capacity.
(k) The following Table No. 2
shows the minimum size for feed
ers to supply a three-wire 1l0-220
volt, single-phase lighting panel:
Table Ne. I
MINIMUM WIRE SIZE TABLE
Number Minimum
ClrcuiS size Wire
TO 6 incl. ........................ No. a
10 10 incl. .....-...........-...... No. 6
x 10 10 lncl- ...............-..--.... No. 4