2822                           County Local Laws

1.    Local alarm systems shall be protected by fuses used only
to protect the fire alarm system. Fuses shall comply with Sections
240-21 and 240-22 of the National Electrical Code, except that cart-
ridge type fuses may be used in control panels.

2.    The load on any branch circuit overcurrent device pro-
tecting a fire alarm circuit shall not exceed 12 amperes and the rating
shall not exceed 15 amperes.

3.    Branch circuit circuit-breakers combined with switches
are not approvable for fire alarm circuit protection.

(h) Overcurrent enclosure. Connections to a source shall be
made through fuses enclosed in a metal box or cabinet of a type
which shall be capable of being sealed or locked. The box shall be
painted fire-alarm red and bear the legend "Fire Alarm Fuses."

DIVISION 4. Systems
83-43. Operation.

All alarm bells shall, unless herein otherwise provided, operate
simultaneously from any striking station or automatic detector.

(a)    Silent alarm system. Silent alarm systems may, by
permission of the Fire Marshal, be installed in hospitals, multi-family,
or buildings of similar occupancy. Such systems shall comply with
all applicable provisions of this Article.

(b)    Pre-signal system. Pre-signal systems may be used only
on approval of the Fire Marshal. Such systems shall comply with
all applicable provisions of this Article.

(c)    Existing system. Existing battery operated and other
local alarm systems for fire alarm use which have been installed in
accordance with the provisions of previous regulations, and which are
maintained in an operable condition with bells and striking stations
in such numbers and locations satisfactory to the Fire Marshal,
will be considered as acceptable under these regulations until such
time as their operation is unsatisfactory to the Fire Marshal. Exist-
ing fire alarm systems installed under the provisions of previous
regulations may be (1) repaired; (2) extended to additional striking
stations in the existing building; or (3) extended to one additional
bell per floor in the existing building. The wiring method and equip-
ment, except the bell, used in an extension of an existing fire alarm
system shall conform to other provisions of this Article.

83-44. Non-coded systems.

Non-coded bell systems shall be so arranged that the bells will
continue to operate after the sending of a signal from any station
until that station or detector is restored manually to its normal posi-
tion.