Effective GFCP without bond bushing

J

jeg112

Member
Location
San Diego
Occupation
Inside Wireman
Copied and pasting here from YouTube comment section per Mike Holts request. Video was about bonding raceway to a bonded/grounded can.

"i know it's considered bonded by code but I'm saying the locknut and the shoulder of the connector are only making contact with the nonconductive paint on the enclosure. The electrical continuity occurs where the threaded portion of the connector happens to touch the unpainted area inside of the KO, yes? Is it fair to say we are relying on those two components making incidental contact for our effective gfcp?"
 
250.96(A) ... Any nonconductive paint, enamel, or similar coating shall be removed at threads, contact points, and contact surfaces or shall be connected by means of fittings designed so as to make such removal unnecessary.
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All locknuts are designed to make paint removal unnecessary. The UL testing requires the locknut be hand tightened and the rotated an additional 1/4 turn using a "hammer and screwdriver" or other suitable tool.
 
Do you happen to know the reference for that or the best place for me to look? I looked through UL 514B and found that exact wording (...hand tightened...1/4 turn...) but it was under the section for the sealing rings test so doesn't apply.
 
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