Step 5: Electrical Conduits
Conduit Connection and Installation
No. Description
1
Threadless rigid metal conduit
or intermediate metal conduit
Threaded rigid metal conduit or
intermediate metal conduit
bonding& grounding bushing
Method of bonding
For under or over 250
volt circuits, service
equipment and
hazardous locations
(where applicable) with
or without unpunched
rings around the
knockout.
Method of bonding
For 120/208 volt or
120/240 volt circuits,
provided no unpunched
rings remain around the
knockout.
Method of bonding
For under or over 250 volt
circuits, service equipment
and hazardous locations
(where applicable),
provided no unpunched
rings remain around the
knockout.
Threadless opening in a sheet metal box or enclosure
The conduits and related materials must comply with requirements in UL746B and the installation of electric
conduits should comply with the local laws and regulations.
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③ ④ ⑤
⑥ ⑦ ⑥
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