Volume-IF - JantERmantER

PEM-6666-0
TITLE SPECIFICATION NO. PE-TS-360-620-C001
TECHNICAL SPECIFICATION FOR
VOLUME: IIB
STACK ELEVATOR
SECTION C
REV 0 DATE
SHEET
OF
Outlet boxes, switch boxes, and associated fittings shall be galvanized iron or equivalent cast
ferrous metal.
c) Installation
Contractor shall field route conduit according to the general routing indicated on the drawings
reviewed and accepted by the Engineer-in-Charge and shall coordinate conduit locations with
other equipment and structures. Wherever practical, conduit shall be routed so that, except
where it is changing elevation or being lowered to enter equipment, the lowest part of the
conduit, including its associated supports and appurtenances, is at least 2.05 metres above
the closest walking surface beneath it. Conduit, including its associated supports and
appurtenances, routed above work areas, walkways and platforms, shall be at least 2.05
metres above the closest walking surface beneath it may be routed a reasonable disdtance
away from the supporting wall of ceiling, so long as the specified support is provided,
interference with other equipment and structures is avoided, and the routing is acceptable to
the Engineer-in-Charge. Conduit including its associated supports and appurtenances, which
must be routed closer than 2.05 metres above the closest walking surface beneath it shall be
routed as closer than 2.05 metres above the closest walking surface beneath it shall be routed
on the inside wall of the concrete chimney. Conduit which is stubbed up shall remain plugged
until the conduit is extended. Conduit field routing shall be acceptable to ther Engineer-in-
Charge. Routing not acceptable shall be rerouted and replaced without expenses to the
Owner.
Moisture pockets shall be eliminated from conduits. If water cannot drain to the natural
opening in the conduit system, a hole shall be drilled in the bottom of a pull box or a “C-type”
conduit fitting provided in the lower part of the conduit run.
Metal conduit shall be joined by threaded conduit couplings with the conduit ends butted. Use
of running threads will not be permitted. Where metal conduit cannot be joined by standard
threaded couplings, conduit unions or split couplings may be used if both material and location
are acceptable to the Engineer-in-Charge. Only ground seat type watertight unions shall be
used where the union may be submerged.
Run of conduit shall not contain more than the equivalent of four quarter bends, including
those immediately at outlets or fittings. Bends in conduit shall be made without reducing the
internal diameter of the conduit. Use of a pipe tee or vise for bending conduit will not be
permitted. Inside radius of conduit bends shall be not less than six times the inside diameter of
the conduit. Conduits deformed or crushed in any way shall be removed from the job site.
Plane of all conduit ends shall be square with the center line. Where threads are required,
they shall be cut and cleaned prior to conduit reaming. Ends of all conduits shall be reamed to
remove all rough edges and burrs. Cutting oil shall be used in threading operations, the dies
shall be kept sharp, and provisions shall be made for chip clearance. All steel conduit, after
threading, shall be regalvanised by an acceptable galvanizing process. Contractor shall
supply this protective material and shall apply it in the field.
Conduit shall be securely fastened to all boxes and cabinets. Threads on metallic conduit
shall project through the wall of the box to allow the bushing to butt against the end of the
conduit. Lockouts both inside and outside shall then be tightened sufficiently to bond the
conduit securely to the box.
Precautions shall be taken to prevent the accumulation of water, dirt, or concrete in the
conduit. Conduit in which water or other foreign materials have been permitted to accumulate
shall be thoroughly cleaned or, where such accumulations cannot be removed by methods
acceptable to the Engineer-in-Charge, the conduit shall be replaced.
Equipment and devices which move in relation to the supply conduit due to vibration, normal
operation of the mechanism, or thermal expansion shall be connected to the supply conduit
using not more than 760 mm of flexible conduit adjacent to the equipment or device.