surfaces are necessary for proper installation, support or anchorage of cables
or other electrical work, the work shall be carefully done, and any damage to
the building, piping or equipment shall be repaired by skilled mechanics of the
trade involved at no additional cost to OWNER.
After installation, all electrical equipment shall be protected to prevent damage
during the construction period. Openings in boxes and cabinets shall be left
clean, exposed surfaces shall be cleaned and plated surfaces polished.
PART 2 - PRODUCTS
2.1
2.2
NOTICE -All products installed in the Sump Riser Building and below grade
structures shall be rated for use in a Class I, Division 1, Group D location and
installed in accordance with manufacturer recommendations. Explosive
concentrations of methane are likely to be found in these areas.
RACEWAYS
A.
Interior raceways and raceways exposed to the weather shall be threaded
galvanized rigid steel conduit. Underground raceways shall be Schedule 80
PVC. Minimum raceway size shall be 34-inch.
At motor connections within Sump Riser Building and final instrument
connections, conduit shall be UL listed flexible coupling. Construction shall be
bronze braid over brass corrugated core with nonmetallic internal liner, no
more than 3 feet in length. Minimum size for flexible couplings shall be %-
inch.
All raceways entering the Sump Riser Building shall be provided with conduit
seals approved for Class I, Division 1, Group D location in accordance with
Article 501 of the National Electrical Code.
WIRES AND CORDS
A.
Conductors installed in raceways shall be stranded copper THHN/THWN or
XHHW conductors, rated 600 volts. Branch circuit conductors shall not be
smaller than #12 AWG. Low voltage control conductors and cables shall be as
specified in Division 16500.
Cord, as indicated on the Drawings, shall be heavy duty type SO cord for use in
a Class IJ, Division 1, Group D environment.
Each wire end entering a cabinet shall be color coded, by insulation color or
applied color tape, to denote polarity. Phases shall be color coded for
identification throughout the project as follows:
120 /240 VACsingle-phase 208 VAC 3-phase (VFD
Output)
File No. 3066.09 Electrical Work 16000 - 3 of 7 December 2017
