2.7.3
Class 2 Low Energy Conductors
The conductor sizes specified for digital functions shall take precedence
over any requirements for Class 2 low energy signal-circuit conductors
specified elsewhere.
PART 3
EXECUTION
3.1
MANUFACTURER'S INSTRUCTIONS
The Contractor shall install all system components, including Government
furnished equipment, and appurtenances in accordance with the
manufacturer's instructions, IEEE C2 and as shown, and shall furnish
necessary interconnections, services, and adjustments required for a
complete and operable system as specified and shown.
3.1.1
Installation
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NOTE: Designer will specify the correct Section
titles and numbers for electrical work. The type of
raceway used can be electric metallic or rigid
galvanized steel. The requirements of the National
Electrical Code are the governing authority.
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The Contractor shall install the system in accordance with the standards
for safety, NFPA 70, UL 681, UL 1037 and UL 1076, and the appropriate
installation manual for each equipment type. Components within the system
shall be configured with appropriate service points to pinpoint system
trouble in less than 20 minutes. Minimum size of conduit shall be 13 mm
1/2 inch. DTS shall not be pulled into conduits or placed in raceways,
compartments, outlet boxes, junction boxes, or similar fittings with other
building wiring. Flexible cords or cord connections shall not be used to
supply power to any components of the system, except where specifically
noted herein. All other electrical work shall be as specified in Sections
[_____] and as shown. Grounding shall be installed as necessary to
preclude ground loops, noise, and surges from adversely affecting system
operation.
3.1.2
Enclosure Penetrations
All enclosure penetrations shall be from the bottom unless the system
design requires penetrations from other directions. Penetrations of
interior enclosures involving transitions of conduit from interior to
exterior, and all penetrations on exterior enclosures shall be sealed with
rubber silicone sealant to preclude the entry of water. The conduit riser
shall terminate in a hot-dipped galvanized metal cable terminator. The
terminator shall be filled with an approved sealant as recommended by the
cable manufacturer, and in such a manner that the cable is not damaged.
3.1.3
Cold Galvanizing
All field welds and/or brazing on factory galvanized components, such as
boxes, enclosures, and conduits, shall be coated with a cold-galvanized
paint containing at least 95 percent zinc by weight.
SECTION 13721A
Page 33
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