specifications - FAACO - Federal Aviation Administration Contract ...

FTWIC-2235June 2009volts or in sizes greater than 4" in diameter. Where conduits enter enclosures withoutthreaded hubs, an insulated throat type connector with threads and locknut shall be usedto securely bond the conduit to the enclosure.D. INTERMEDIATE METAL CONDUIT (IMC):Manufactured in accordance with UL 1242 with an interior coating of silicone epoxyester lubricant.E. FLEXIBLE METAL CONDUIT:FOR USE WITH GALVANIZED CONDUIT AND EMT: Single strip, helically wound,interlocking, galvanized steel, in accordance with Fed. Spec. WW-C-566 and UL listed.Liquid tight conduit shall have an extruded, polyvinyl jacket over the flexible metal.F. FITTINGS AND CONDUIT BODIES:1. RIGID METAL OR INTERMEDIATE METAL CONDUIT: Threaded typematerial to match the conduit, in accordance with ANSI/NEMA FB1.2. EMT: Compression type, zinc-plated steel or malleable iron, insulated.3. FLEXIBLE AND LIQUID TIGHT FITTINGS: In accordance withANSI/NEMA FB1; cadmium-plated, malleable iron body and nut; cadmium steelferrule; insulated throat; integrally-cast, external ground lugs.4. PVC CONDUIT: Solvent-welded, slip-on joints, in accordance with NEMATC3.G. ELBOW AND BENDS:Conduit systems shall use the same material as the conduit with which they are installed.H. BUSHINGS:High impact, thermosetting, phenolic insulation; 150 degrees C.I. GROUNDING BUSHINGS:Conduit grounding bushings shall consist of a malleable iron, insulated throat conduitbushing with an attached set screw lug. The Contractor shall be responsible for providingset screws which do not cause a galvanic reaction. Grounding bushing shall complywith Fed.Spec. W-F-408b and WW-C-581d, UL Standards 514B and 467.J. LOCKNUTS:Zinc-plated or cadmium-plated, malleable.16111-2 FTWIC-2034