Daily Kennebec journal. [microfilm reel] (Augusta, Me.) 1870-1975, 1922-05-19
Prescribed Rules
Radio Installation

for receiving Citations az nS4ofSu
by Insurance Authorities Under
Rational Electrical Code
Antsnna-(a) Antennas outside Of
buildings shall not cross over or under
electric light or power wires OF any
circuit Of more than six hundred 5000
volts or railway trolley or feeder
wires, nor shall they be 80 located
that q. failure Of either antenna or Of
the above mentioned electric light or
power wires can result in contact be-
tween the antenna and such electric
light or power wires.
Antennas shall Be constructed and
installed IN 4 strong and durable man.
ner and shall b 20 located ~ to pre-.
vent accidental contact with light and
power wires by sagging or swinging.
Spices and Joints in the antenna
span, unless made with approved
clamps or splicing devices. shall be
soldered.
Antennas installed inside Of build
ings are not covered by the above
specifications.
.Hote-outdoor antennas should be
IN place and kept we'll away from cleo
tric light and power wires. 1t Is ad-
visable for the amateur not to make
any eonnsctions to poles carving lght
| with electric wiring will do well to
have antennas and other apparatus in
stalled by competent electricians.
The size Of the antenna will depend
on the span; for the ordinary receiving
antenna about 100 it. long. No. IA gage
soft drawn copper wire may be used.
or other wire Of equivalent strength.
Where the span is long; or where the
antenna crosses other wires. 1t should
be larger. The requirement for sold
erng or using approved splicing de-
vices Is made to minimize the posi-
| biity of antennas falling on other
! wires.
| Lead-in wires-(b) Lead-in wires
shall be Of copper approved copper
clad steel or other approved metal
which will not corrode excessively and
in no case shall they be smaller than
No. IA 3. & S. gage except that ap-
proved copper-clad steel not less than
No. II p. & S. gage may be used.
| Leadin wires on the outside Of
buildings shah not come nearer than
four (4) inches to electric light and
power wires unless separated there
| from by a continuous and firmly fixed
|
| manent separation. The non-conductor
shall be in addition to any insulation
O., the wire.
Lead-in wires shall enter building
through a non combustible, non
absorptive insulating bushing.
Note-Although desirable from a
signaling viewpoint to prevent partial
grounding in wet weather, these rules
do t'require the insulating of lead
through the building wall. where
bushng is specified. This is to pro-
tect against possible contact with
wires. pipes, or other grounded metal
| which may be concealed in walls
Protective Device-(c) Each lead
in wire shall be provided with an APP
proved protective device properly con-
nected and located Cnside or outside
the building) as near as practicable to
the point where the wire enters the
building. The protector shall not be
placed in the immediate vicinity of
easily ign!table stuff. or where exposed
to infammabe gases or dust or 1yings
of combustible materials.
The protective device shall be an
approved lightning arrester which Will
operate at a potential of five hundred
(500) volts or less.
| The use of an antenna grounding
| switch is desirable. but does not OBJ
viate the necessity for the approved
protective device required in this sec
ton. The antcnna grounding switch
| if installed shall, in it's closed posi-
ton. form a shunt around the protcc-
tive device.
! Eote-The protective device should
be an approved lightning arrester: the
use of cheap homemade devices
should be discouraged. Fuses are not
| required. but if installed should be be-
| tween the lead-in and the lightning ar
| roster.
Protective Ground wire-(d) The
! ground wire may be bare or insulated
and shall be Of copper or approved cop
| per-clad steel. If of copper tho ground
wire shall be not smaller than No. IA B.
&; S. gage and if of approved copper
! clad steel it shall be not smaller than
No. IT B. & S. gage. The ground wire
shall be run In as straight a line as
possible to a good permanent ground.
| Preference shall be given to water
| piping. Gas piping shall not be used
| loT grounding protective OeNlCeS.
Other permissible grounds are ground
ed steel frames Of buildings or other
| grounded metallic work in the building
and artificial grounds such as driven
pipes, plates. cones. etc.
| The ground wire shall be protected
against mechanical injury. An ap-
proved ground clamp shall be used
wherever the ground wire is connected
to pipes or piping.
| Note--The proper connection Of the
antenna to the ground minimizes the
| lightning hazard. A satisfactory
| ground and properly run ground wire
/ are OF primary Importance.
Wires inside Buildings-(e) Wires
inside buildings shall be securely fas-
| tened in workmanlike manner and
| shall not come nearer than two (2)
| inches to any electric light or power
wire unless separated therefrom by
some continuous and firmly fixed non
conductor making permanent separa-
ton. This conductor shall be In
addition to any regular insulation on
| the wire. Porcelain tubing or ap-
proved flexible tubing may be used for
encasing wires to comply with this
| rule.
! Receiving Equipment Ground Wire
81 The ground conductor may be