2.11.4
Single-Line Electrical Diagram
A single-line electrical diagram of the station shall be provided. The
diagram shall be enclosed between matte-surface thermoplastic sheets
buttoned or otherwise suitably fastened together to allow easy access to
the diagram for making any future changes. The diagram shall be suitable
for outdoor mounting and shall be approximately 350 x 525 mm 14 x 21 inches
unless another size is approved. The diagram shall be attached with
temperature- and moisture-resistant, pressure-sensitive adhesive or with
other suitable means to the indicated location at the metal-clad switchgear
lineup, except when otherwise shown or directed.
2.11.5
Liquid Dielectrics
Liquid dielectrics for transformers, capacitors, reclosers, and other
liquid-filled electrical equipment shall be non-polychlorinated biphenyl
(PCB) mineral-oil or less-flammable liquid as specified. Nonflammable
fluids shall not be used. Tetrachloroethylene (perchloroethylene) and 1,
2, 4 Trichlorobenzene (TCB) fluid shall not be used. Liquid dielectrics in
retrofitted equipment shall be certified by the manufacturer as having less
than 50 parts-per-million (ppm) PCB content. In lieu of the manufacturer's
certification, the Contractor may submit a test sample of the dielectric in
accordance with ASTM D 923 and have tests performed per ASTM D 4059at a
testing facility approved by the Contracting Officer. Equipment with test
results indicating PCB level exceeding 50 ppm shall be replaced.
2.11.6
Danger Signs
One danger sign inscribed "DANGER-HIGH VOLTAGE" shall be permanently and
securely mounted approximately 1.5 m 5 feet above finished grade on each
outward side of the fence enclosure. Fasteners shall be of stainless
steel. Signs shall be of metal and shall have letters of at least 75 mm 3
inches in height. Voltage warning signs shall comply with IEEE C2.
2.11.7
Concentric-Lay-Stranded Conductors
Copper conductors shall comply with ASTM B 8 for soft drawn copper.
Equivalent aluminum conductors shall comply with ASTM B 231/B 231M.
2.11.8
Conduits, Rigid Metal
Conduits shall comply with UL 6.
2.11.9
Hardware
Ferrous metal threaded items shall comply with ASTM A 153/A 153M and
miscellaneous nonthreaded items shall comply with ASTM A 123/A 123M. Other
equivalent protective treatment, as required by ASTM A 123/A 123M or ASTM A
153/A 153M, or ferrous metals designed to meet ASTM Standards covering
corrosion-resisting steel, will be permitted if approved in writing.
2.11.10
Padlocks
Padlocks shall comply with Section 08710 DOOR HARDWARE
2.11.11
Panelboards, Circuit-Breaker Type
Panelboards shall comply with NEMA PB 1, UL 50 and UL 67.
SECTION 16311A
Page 63
Previous Page
