16050-11
BASIC MATERIALS AND METHODS
Installation of Bushings and Grounding Bushings
1. Provide grounding type insulated bushings on all power conduits regardless of
size.
2. Provide grounding type insulated bushings on all control conduit sizes and
signal conduit sizes one and one-quarter inch (I-1/4") trade size and larger.
3. Provide standard bushings for conduits one inch (I") and smaller unless
otherwise stated.
16050-10
BASIC MATERIALS AND METHODS
approval for splicing prior to installation of feeder(s). Refer to Splicing
Methods listed below.
Do not pull conductors into raceways until raceway system, including all
outlets, cabinets, bushings and fittings, is completed. Verify that all work of
other trades which may cause conductor damage is completed. Use only
ULL. approved cable lubricants when necessary. Do not use mechanical means
to pull conductors No. 8 or smaller.
8.
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BASIC MATERIALS AND METHODS
i. | Used for whips for concealed lights above hung ceiling limited to 3'
in length.
ii. Within studded concealed wood frame walls for receptacles and light
switching.
All signal wiring shall be installed in rigid galvanized steel or PVC coated rigid
galvanized steel conduit.
C. General Raceways Installation Requirements:
1.
ao
10.
11.
12.
13.
14.
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BASIC MATERIALS AND METHODS
12) Heavywall aluminum conduit. Galvanized heavy duty rigid steel conduit as
approved by the Engineer.
Wiring 600 volts or less in dry concealed locations [hung above ceilings, attic
areas, or within CMU block walls] (NEMA 1 or 12): Galvanized electrical
metallic tubing (for raceway sizes up to and including 2" trade size) or
galvanized rigid heavy wall steel conduit.
Wiring 600 volts or less in dry exposed indoor locations (NEMA 1 or 12): Rigid
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BASIC MATERIALS AND METHODS
a. Safety switch enclosures for non-hazardous locations painted galvanized
steel for NEMA 12 area and stainless steel for NEMA 4X areas.
b. Switches specified as NEMA 7 & 9 shall be furnished in cast aluminum
enclosures with conduit provisions as specified. Enclosures shall be
provided with a bolted cover and with sealing means for hazardous location
protection. "ON" and "OFF" position identification shall be cast into the
cover, not painted on or applied with an adhesive.
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BASIC MATERIALS AND METHODS
7.
8.
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BASIC MATERIALS AND METHODS
Approved manufacturers shall be: Rob Roy Plasti Bond, Thomas & Betts-
OCAL or equal.
All fittings shall be of the same material as the respective raceway system.
B. Conductors and Cable
1.
All power wiring conductors (P-X on drawings) shall be insulated for 600 volts,
Type XHHW insulation, unless otherwise noted. Conductors shall be standard
AWG and KCMIL sizes. Conductors shall be 98 percent copper, stranded, heat
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BASIC MATERIALS AND METHODS
SNADMS
9
10.
Submit Shop Drawings per SECTION 16010.
Submit test results on all feeder conductors and heat trace cables as specified in
goa
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BASIC MATERIALS AND METHODS
Control Devices and Equipment
Motor Starters
Safety Disconnect Switches
Lighting Fixtures
Lighting flexible hangers
Conduit and wall and floor link seal fittings
Conduit cable sealing fittings
SECTION 16950.
PART 2 - PRODUCTS
2.1 MATERIALS
A. Conduit, Raceway and Tubing
1.
1.2
1.3
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BASIC MATERIALS AND METHODS
electrical wiring. If, after installation of any equipment, piping, ducts, conduit, etc.,
it is determined that ample maintenance and passage space has not been provided,
the work shall be rearranged and/or furnished with other equipment as required to
provide this space at no additional cost to the Engineer. The Contractor shall review
the drawings for all other trades to determine any potential interferences and identify
and coordinate with those with other trades.
