accordance with NFPA requirements, the manufacturer's diagrams and
recommendations, and this section.
3.2
VERIFICATION OF CONDITIONS
Become familiar with details of the work, verify dimensions in the field,
and advise the Contracting Officer of discrepancies before performing the
work.
3.3
WIRING
Wiring shall be in rigid steel conduit, intermediate metal conduit or
electrical metallic tubing. Identify circuit conductors within each
enclosure where a tap, splice, or termination is made. Attach markers in a
manner that will not permit accidental detachment. Identify control
circuit terminations. Unless otherwise indicated, wiring and conduit will
be new. Do not run fire alarm circuits in the same conduit with non-fire
alarm circuits. Do not run ac circuits in the same conduit with dc
circuits.
3.4
GROUNDING
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NOTE: Connections subject to moisture or corrosive
influences should be welded or brazed.
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Ground equipment in accordance with NFPA 70. Measure the resistance of
each connection to ground. Ground resistance shall not exceed 5 ohms.
3.5
CABLE SPLICES
Make splices only where the distance between connections exceeds the length
in which the cable is manufactured. Splices shall conform to Section 16302N
UNDERGROUND TRANSMISSION AND DISTRIBUTION, and the cable manufacturer's
recommendations.
3.6
SPECIAL CONNECTIONS
3.6.1
Branch or "Y" Connections for Cables
Make these connections only aboveground at fire alarm stations, on
structures, or in manholes and handholes as approved. Provide cable
terminations in fire alarm station enclosures or in boxes or cabinets
equipped with telephone-type terminal boards. Provide weatherproof
enclosures in exterior or wet locations and watertight in manholes and
handholes.
3.6.2
Welded and Brazed Connections
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NOTE: When welded or brazed connections are not
indicated or specified, delete this paragraph.
**************************************************************************
Welding or brazing process shall not weaken the parts joined and shall join
strands. Provide welding process so that the completed joint or connection
will be one homogeneous mass equal to or larger in size than the cables and
wires joined. An exothermic type welding method may be used, employing a
SECTION 13851N
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