2828                            County Local Laws

opening directly into an enclosed stair without an intervening exit or
public corridor may have one gong located at the second story land-
ing, instead of on each floor as required above, provided the total net
floor area inside of enclosing walls, served by such gong shall not
exceed 3,000 square feet above the main floor. If a basement or any
story used or intended to be used for human habitation is isolated,
additional gongs will be required to serve this area as herein pro-
vided ;

5.    Open areas such as stores, salesrooms, shops, lofts, etc., one
gong for each 10,000 square feet of floor space or fractional part
thereof, spaced not more than 200 feet apart, except that no alarm
gong will be required for such area with less than 1,500 feet of floor
space;

6.    In buildings without exit corridors or public corridors,
gongs will be required in such numbers and locations as to serve the
purpose of these regulations.

7.    Gongs shall be so located that no point in a straight exit
corridor or public corridor will be further than 50 feet from an alarm
gong and no point in any intercepting or other communicating exit
corridor or public corridor will be further than 25 feet from an alarm
gong, except that in buildings where all doors open directly into an
exit corridor or public corridor, these distances may be increased to 75
and 50 feet respectively. Entries or small halls less than 10 feet in
length intercepting an exit corridor or public corridor will not be
considered as intercepting hallways within the meaning of this
paragraph;

8.    A sufficient number of gongs shall be installed to adequately
serve an area for the purpose of these regulations and no gong shall
serve a distance greater than 100 feet.

(d) Wiring method. Conductors shall be installed in rigid
conduit, except as follows:

1.    Minimum size conduit. No conduit shall be smaller than
3/4 inch electrical trade size.

2.    Conductors. Conductors shall be not smaller than No. 14 and
be of a type approved for general use.

3.    Outlets. Outlet and junction boxes shall be provided with
threaded hubs.

4.    Paint red. Exposed conduit, outlet, and junction boxes shall
be painted "fire-alarm red". Outlet and junction boxes shall be sten-
ciled "COUNTY FIRE ALARM", using black paint.

Sec. 5. A new Article V, title "Standards and Requirements for
Electrical Installations," is hereby added to Chapter 83, title "Elec-
tricity", of the Montgomery County Code 1965, as amended, to follow
immediately after new Article IV thereof, and to read as follows: