Fittings & materials index
The stuff you get handed and are expected to already know the name of. Each one is drawn from scratch here, with a plain sentence on what it does. It is a naming reference, not a spec — the sizes, ratings and where each is permitted live in the manufacturer's data and the code.
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ConnectorTies a length of raceway into a box; here a set-screw type that grips the tube and threads into the enclosure. -
CouplingJoins two lengths of raceway end to end in a straight run. -
One-hole strapFastens a single run of pipe to a surface with one screw. -
Two-hole strapA flatter strap held by two screws, one each side of the pipe. -
LB body (condulet)A cast fitting that turns a rigid run through a right angle with a removable cover for pulling. -
Device boxHolds a switch or receptacle and its terminations, with knockouts for the raceway. -
BushingThreads onto a raceway end to give conductors a smooth, protected edge to pass over. -
LocknutA toothed nut that bites into the enclosure to lock a connector or fitting tight. -
Twist-on connectorA cap with a spring inside that joins stranded or solid conductors by twisting on. -
Strut channelA C-shaped metal channel that mounts to structure and carries straps, clamps and supports. -
Beam clampGrips the flange of structural steel so a hanger or rod can hang without drilling. -
Reducing washerA stepped washer set that closes down an oversized knockout to fit a smaller fitting.
Some of these get their own glossary entry — the LB and C bodies, for one. The glossary explains the words; this page shows the things.
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