Project Number: 228730
Issue Date: August 2017
WWTE SCADA Upgrades
Nashua, NH
Flexible metallic (FM) conduit shall meet the requirements of UL1.
Liquidtight flexible metallic conduit shall be provided with a
protective jacket of PVC extruded over a flexible interlocked
galvanized steel core to protect wiring against moisture, oil,
chemicals, and corrosive fumes.
Fittings for flexible metallic conduit shall meet the requirements of
UL 514B, Type I box connector, electrical, Type II coupling,
electrical conduit, flexible steel, or Type IV adapter, electrical
conduit.
7. Wireways
a.
Wireways and auxiliary gutters for use in exposed, dry locations
shall be a prefabricated channel-shaped sheet metal trough with
hinged or removable covers, associated fittings, and supports for
housing, and protecting electrical wires and cables in accordance
with UL 870.
Straight sections of trough, elbows, tees, crosses, closing plates,
connectors, and hanging brackets shall be constructed from sheet
steel of commercial quality not less than 16-gage. Sheet metal
component parts shall be cleaned, phosphatized, and coated with a
corrosion-resistant gray paint.
Straight sections of wireways and auxiliary gutters shall be solid or
have knockouts as indicated in both sides and bottom, 3 inches on
center.
Straight sections shall be not more than 5-feet long, with covers
held closed with screws.
8. Conduit Seals
WOODARD & CURRAN
Provide factory fabricated watertight conduit sealing bushing
assemblies suitable for sealing around conduit, or tubing passing
through concrete floors and walls. Provide a cast in place water
stop wall sleeve with a mechanical pipe seal between the conduit
and the sleeve. Construct seals with steel sleeve, malleable iron
body, neoprene sealing grommets or rings, metal pressure rings,
pressure clamps, and cap screws.
Provide E.Y-S. seal fittings with appropriate potting material where
conduits enter or leave a Class 1, Division 1 or 2 environments or a
Class 2, Division | or 2 environment.
RACEWAYS, BOXES AND SUPPORTING DEVICES
26 05 34-4
