E55.REV

ELECTRICAL PROVISIONS FOR FIRE AND LIFE SAFETY

NOTE: MASTER COPY DATE: MAY 3, 1983

Part 1 -	GENERAL

1)	DESCRIPTION

A.	Provide complete raceways, wire and cable, emergency power supply and accessories, except as noted

B.	Material and installation shall comply with article 760 of the National Electric Code

2)	POWER PROVISIONS

A.	Proposal shall contain a detailed description of entire system's power requirements, including Fire Command Station, Annunciator Panels and remote points. Proposal shall include description of volatility o memory and data storage devices if used

B.	Provide voltage stabilization devices required to maintain overall system operation within line voltage variations of 105-130 volts, AC 60 Hz plus an minus 0.5 Hz

3)	LIGHTNING PROTECTION

A.	Proposal shall describe suitable provisions to insure protection of components of system from damage due to lightning strikes and power system transients. Include steps to assure that the effects of lightning strike do not propagate beyond confines of Building

Part 2 -	PRODUCTS

1)	MATERIALS

A.	Raceways:

1.	Rigid steel conduit:

a.	Full weight pipe, galvanized, threaded, minimum 3/4 in., except as noted or required for wiring.

b.	Underground: hot dipped galvanized.

2.	Intermediate metal conduit:

a.	Lightweight steel pipe, galvanized, threaded, minimum 3/4 in., except as noted or required for wiring.

b.	Underground: hot dipped galvanized.

3.	Poly-vinyl-chloride (PVC) conduit: refer to section "Raceways".

4.	Flexible steel conduit: continuous single strip, galvanized, minimum 3/4 in. will be permitted only for final connections to sensing or alarm devices and shall be underwriters labeled and of lengths not exceeding 24 in. where a rigid connection cannot practically be made

5.	Wireways:

a.	Size: minimum No. 16 gauge steel.

b.	Baked enamel finish and screw-on covers.

6.	Surface metal raceway:

a.	Size: minimum No. 20 gauge steel.

b.	Baked enamel finish.

c.	Screw-on covers.

B.	Fittings and accessories:

1.	Raceway fittings:

a.	Rigid steel and intermediate metal conduits: steel or malleable iron. Zinc die cast not permitted

b.	Rigid aluminum conduit: copper free aluminum alloy or hot dipped galvanized

c.	Bushings: metallic insulated type.

d.	Weatherproof and dustight installations: liquid-tight with sealing ring and insulated throat.

2.	Sleeves:

a.	Exterior non-membrane waterproofed walls:

(1)	Galvanized cast iron, galvanized steel or wrought iron.

(2)	Continuously welded center flange.

b.	Exterior membrane waterproof walls, floors and roofs:

(1)	Galvanized cast iron, flashing flange and clamping ring.

(2)	Similar to Josam No. 26400 Series.

c.	Exterior non-membrane waterproof roofs:

(1)	Galvanized cast iron, flashing flange and clamping ring.

(2)	Similar to Josam No. 26440 Series.

d.	Interior membrane waterproof floors:

(1)	Galvanized cast iron, flashing flange and clamping ring.

(2)	Similar to Josam No. 26420 Series.

(3)	Extend 2 in. above floor with pipe nipples.

(4)	Clamp to flashing.

e.	Flashing subject to review, extending 10 in. around edge of raceway.

f.	Seals:

(1)	Raceways in waterproof sleeves: O.Z. Type WSK thruwall seal.

(2)	Raceways in non-watertight sleeves: Sealing compound.

(3)	Thruwall cable seals: O.Z. type WSCS.

g.	Fire sealant: Similar to Chase Foam, CTC PR-855 fire resistant foam sealant

h.	Hazardous areas, cold rooms conductor water stops: Crouse-Hinds or Appleton type EYS, ESU, EYM, EYOM or SFM with matching sealing cement o fiber filler

C.	Boxes:

1.	Outlet boxes: except as otherwise required by construction, devices or wiring:

a.	Stamped steel, 4 in. square or octagon.

(1)	Above ceiling: 1-1/2 in. deep.

(2)	In ceiling or slab: 3 in. deep.

(3)	In wall: 2-3/4 in. deep.

(4)	With raised covers and fixture studs where required.

b.	Galvanized cast iron or aluminum with threaded hubs:

(1)	On ceiling: 4 in. round, 2 in. deep.

(2)	On wall: 4 in. square, 2 in. deep.

c.	Outdoors and damp locations: weatherproof.

d.	Without device: blank cover.

e.	Offset back-to-back outlets: minimum 6 in. separation.

2.	Junction and pull boxes:

a.	Galvanized sheet steel.

b.	Covers: painted fire dept. red, screw-on, except as noted.

c.	Location: as noted and accessible.

d.	Outdoors and damp locations: galvanized cast iron with threaded hubs and gaskets.

e.	Provide barriers between emergency and normal wiring.

D.	Conductors:

1.	Power system:

a.	Type: copper.

b.	Sizes:

(1)	No. 12 minimum.

(2)	At 120 volts and over 100 ft circuit length: No. 10 minimum.

c.	Insulation:

(1)	Rubber and thermoplastic: ASTM and IPECA Standards.

(2)	Type: THW.

(3)	Color-coding: as per Code.

d.	Accessories:

(1)	Cable lugs and taps: solderless pressure type.

(2)	Cable lug connections: compression type of same metal as conductor.

2.	Signal and communication system wiring.

a.	Multi-conductor cables meeting Underwriters Laboratory Standards and so labeled. Provide with minimum 10 percent spare conductors

b.	Conductors: copper.

c.	Minimum size:

(1)	Manual fire alarm Stations: No. 16 A.W.G.

(2)	Speakers: No. 16 TW. SH.

(3)	Strobe lights: No. 16.

(4)	Smoke detectors: No. 16.

(5)	D.C. power supplies: No. 14.

d.	Insulation:

(1)	600 volt, 392 deg. F., teflon or equivalent, minimum 15 mils thickness, non-flame supporting

(2)	Sheath and outer jacket: teflon 25 mils, colored fire department red and labeled entire length: "Fire Alarm Service.

3.	Tags:

a.	Fireproof linen or fiber in accessible locations.

b.	Control and alarm wiring: indicate type control or alarm, size of wire, and points of origin and terminations.

2)	ELECTRONIC SYSTEMS

A.	Components to conform to industry standards for value identification of capacitance, resistance, etc

B.	Temperature ratings of indoor components: forced air cooling where required to maintain design parameters

C.	Plug-in circuit card modules: position in vertical plan.

D.	Devices: mount to preclude tampering.

E.	Provide damping for inductive loads to prevent damaging voltage transients and noise generation.

F.	Provide system with:

1.	Compensation for losses in trunk wiring.

2.	Required amplification of received signal levels.

G.	Electronic systems: in accordance with this specification. Design, material, workmanship, finish, and operation of systems and parts: adequate fo purpose intended, and of manufacturer's current production

H.	Soldered connections: mechanically secured before soldering and made only with rosin core solder.

I.	Temperature ratings of components: . t>hese ratings are for average air temperature at all printed boards, and shall withstand local heating by high dissipation components. Provide forced air cooling for heat generating equipment as required

J.	Logic cards:

1.	Provide with one slot interkeying pattern to prevent interchangability and reversing

2.	1/16 in. thick glass fiber epoxy resin, with color coded ejectors (to group cards according to function for quick locating), with plated-through hole as feed through on all logic cards. Connector fingers: gold plated over nickel. Screen cards with ink to aid in locating circuits and components

3.	Transistors and diodes: commercial grade silicone type only.

K.	Use point to point wiring to minimize lead length to reduce capacitive loading and wire to wire coupling

L.	Provide Cable P.C. cards for chassis to chassis interconnects, to permit the use of one of the rack connectors as an input/output connector. Buffer signal output or input where cable capacitance is a problem

M.	Signal ground to return low current logic cards and power ground for high current signals (lamp drivers, power level converters, etc.). Common signal ground and power ground at the power supply. Provide one power buss per rack. Current carrying ground by frame not permitted

N.	Shield high voltage display wiring to and from the display and single point ground at chassis end.

O.	Avoid tightly laced cables which increase electrostatic coupling.

P.	Provide system immunity from externally generated electrical noise, and noise from internal subsystems. Provide required noise suppression such as damaging for inductive loads

Q.	Monitoring and control signals may be multiplexed for transmission between Central Console and remote systems. Electrical noise problems associated with this transmission will be a function of the noise environment, modulating techniques employed, the amount of shielding in the transmission patch, and signal processing techniques. Shielding techniques and noise environment assumptions will be described in the Proposal, and their effects shall be analyzed

Part 3 -	EXECUTION

1)	INSTALLATION

A.	Raceways:

1.	Supports:

a.	Ceiling trapeze, strap hangers, or wall brackets.

b.	U-bolts: at each floor level of riser raceways and connected to acceptable supports

c.	Secure raceways to supports with pipe straps or U-bolts.

d.	Spacing:

(1)	10 ft on centers.

(2)	5 ft on centers for wireways.

e.	Mount supports to structure with:

(1)	Toggle bolts on hollow masonry.

(2)	Expansion shields or inserts on concrete and brick.

(3)	Machine screws on metal.

(4)	Wood screws on wood.

(5)	Nails, rawl plugs or wood plugs not permitted.

2.	Exposed: run parallel with or at right angles to walls.

3.	Clearance from water, steam or other piping: minimum 3 in. separation from steam and hot water pipes, except 1 in. from pipe cover at crossings

4.	For hung ceiling outlets: run in hung ceilings and connect to ceiling support channels.

5.	In walls: run vertically only.

6.	Raceways passing through fire rated construction: seal opening with fireapproved sealant

7.	Maintain grounding continuity of interrupted metallic raceways with ground conductor or by bonding cable shield to ends of raceways at each interruption

8.	Provide fish or pull wire. For empty raceways over 10 ft. long.

9.	Steel and intermediate metal conduit: paint male threads of field threaded conduit with graphite base pipe compound

10.	Flexible steel conduit: for connections up to 24 in. in length where rigid conduit is impracticable

11.	Expansion fittings: at expansion joints and on length of runs in accordance with manufacturer's recommendations

12.	Outlet boxes:

a.	Set boxes square and true with building finish.

b.	Secure to building structure by adjustable strap irons.

13.	Junction and pull boxes:

a.	Location:

(1)	Clear of other trades.

(2)	Conceal junction and pull boxes in finished spaces.

(3)	Accessible.

B.	Wire and cable: Pull no thermoplastic wires at temperatures lower than 32 deg F

2)	TESTS

A.	Conduits:

1.	Test resistance of conduits from console to end of run using one conductor return.

2.	Maximum: 10 ohms DC resistance.

B.	Wires:

1.	Free from short circuits and ground. Insulation resistance between conductors and between conductors and ground (not including attachment, sockets receptacles or appliances) not less than

a.	1,000,000 ohms: for No. 12 wire.

b.	250,000 ohms: for No. 10 or larger.