Apr 10, 2024 · I was wandering if someone could better explain the rules on bonding raceways to cabinets with eccentric or concentric knockouts, whether for services or 250.97 circuits over 250 …

Oct 23, 2008 · My question of the day is, What is the skinny on concentric and eccentric knockouts. I havent been on a job yet where foreman has called for bonding bushings to be used where these …

Apr 12, 2024 · Just to clarify, it is still not clear to me if ALL concentric or eccentric knockouts have to be removed or if some larger knockouts can remain while securing conduit and to meet specific code. …

May 8, 2003 · Re: Concentric, Eccentric knockouts Concentric knockouts look like bulls-eyes... one circle indside of another with the inside and outside lines spaced equal distances apart.

Mar 10, 2006 · All boxes with concentric or eccentric knockouts have been investigated for bonding and are suitable for bonding without any additional bonding means around concentric (or eccentric) …

Mar 30, 2015 · These are usually only used as J-boxes and I find myself wanting to use ground lugs and two hole mechanical lugs through bolted to the enclosure. Is this necessary to do all this bonding or …

May 23, 2016 · Too add to that, if the raceway contains service conductors you need more then just standard locknuts to assure bonding of the raceway even if not concentric/eccentric KO's and at any …

Oct 22, 2007 · Category Code BGUZ, page 25, or the 2006 UL White book has a paragraph dedicated to concentric and eccentric knockouts. The same Category Code in the 2007 UL White book, page …

Dec 20, 2023 · My understanding is that because it's <250V and non-service, the connection at the garage subpanel alone would be sufficient even with concentric KOs. Yes systems that are less than …

Dec 7, 2011 · 250.97 Bonding for Over 250 Volts. For circuits of over 250 volts to ground, the electrical continuity of metal raceways and cables with metal sheaths that contain any conductor other than …