2.3.11
Grounding Provisions
NFPA 70 and UL 467 including a grounding terminal in the cabinet. Grounding
conductor from terminal to earth grounding system shall be solid or
stranded copper not smaller than No. 6 AWG. Earth grounding system shall
consist of one or more [copper] [copper clad steel] rods. Ground rods
shall be a minimum of 2435 mm 8 feet long.
2.3.12
Shunt Resistors
MIL-I-1361. Resistors shall be located on the rectifier front panel and
clearly marked with current and voltage for verification of panel ammeter.
2.3.13
Provide complete wiring diagram of the power unit showing both A.C. supply
and D.C. connections to anodes on the inside of the cabinet door. Show and
label components.
2.3.14
Rectifier Replacement/Spare Parts List
Provide identification and coverage for all parts of each component,
assembly, and accessory of the items subject to replacement in accordance
with Section 01781 OPERATION AND MAINTENANCE DATA.
2.4
CONDUIT AND CABLE FOR POWER SERVICE AT 600 VOLTS OR LESS
2.4.1
Conduit
[UL 6, rigid galvanized steel] [Outlet boxes: UL 514A and, Fittings: UL
514B, threaded hubs.] [Metallic conduit and fittings to be
polyvinylchloride coated in accordance with NEMA RN 1, Type A40.] [NEMA TC 2,
Type EPC-40-PVC.]
2.4.2
Cable and Wire Other Than Anode Lead Wires
**************************************************************************
NOTE: Type THW insulation can only be obtained in
large quantity. Use of this type insulation is not
recommended for small project.
**************************************************************************
Copper conductors conforming to ASTM B 3 and ASTM B 8. Wires terminating
at a rectifier, junction box, or test station shall have cable
identification tags. Refer to paragraph 2.1.4 [_____] for anode lead wires.
2.4.2.1
AC Power Supply Wiring
[UL 83, Type [THW] [THWN] [TW]] [UL 44, Type RHW,] [UL 854, Type USE],
stranded [solid] copper conductors, gage (AWG) as indicated.
2.4.2.2
Rectifier DC Negative (Structure) Cable(s)
ASTM D 1248, High Molecular Weight Polyethylene (HMWPE) insulation,
stranded copper conductors, gage (AWG) as indicated.
[2.4.2.3
Rectifier DC Positive (Anode) Header Cable(s)
ASTM D 1248, High Molecular Weight Polyethylene (HMWPE) insulation,
SECTION 13111N
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