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Concentric and Eccentric Knockouts: Which Need Grounding Bushings?
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@frankdagreat598 6 ай бұрын
GOOD EXPLANATION!! Good morning from Sylmar CA
@SparkyChannel 6 ай бұрын
Thanks Frank!
@kenbrown2808 6 ай бұрын
correct answer: yes. a detail I presume is still valid: if the grounding electrode conductor is routed through metallic conduit, it should be bonded to each end of the conduit, because on a high energy fault, the EMF from the fault can interact with the conduit and cause damage to the grounding electrode conductor, if it is not bonded at both ends. where I am, that disconnect and panel would be connected with schedule 40 or 80 PVC, so no bonding bushings needed.
@SparkyChannel 6 ай бұрын
Yes, that is true. And yes, I'll be using PVC for the GEC. Much easier and less expensive.
@Calico5string1962 3 ай бұрын
Excellent info! Thanks.
@SparkyChannel 3 ай бұрын
Welcome!
@Calico5string1962 3 ай бұрын
@@SparkyChannel Been in the biz for a little over 40 years, primarily industrial & commercial, with lots of system control/PLC work and big motor-control centers. Retired in '20, but still doing lots & LOTS of side work! Seems it's hard to find "good" electricians these days... none like to do good, clean, quality work anymore - they just slap it together and hope for the best.🫤
@Eddy63 6 ай бұрын
Nice explanation as always ... Thx
@SparkyChannel 6 ай бұрын
Thanks Eddy!
@BBQPitmaster626 6 ай бұрын
Thanks 😊 Sparky! You’re awesome!
@SparkyChannel 6 ай бұрын
No problem, good question!
@garydudgeon 6 ай бұрын
Another good explanation Sparky.
@SparkyChannel 6 ай бұрын
Thanks Gary!
@CarlosTorres-je3bt 6 ай бұрын
Mr. Sparky can you help me? I need to know where can i buy that hand book with exhibit that you’re using in this video
@SparkyChannel 6 ай бұрын
www.nfpa.org/codes-and-standards/nfpa-70-standard-development/70?l=97
@nevrbdwnruby7484 6 ай бұрын
Hey bill, can you make a video on bending COMPOUND 90's... THink it would be a great video..
@icevariable9600 2 ай бұрын
What’s a compound 90?
@nevrbdwnruby7484 2 ай бұрын
@@icevariable9600 2x 45 degrees, example run goes from wall to ceiling... there are times it does need it when obstruction is in the way... I already know how to do it already..
@stevenpersinger6577 3 ай бұрын
I wish they would get rid of knockouts in majority of equipment. I'd rather drill my own all day long
@icevariable9600 2 ай бұрын
What’s the difference in performance when drilling your own vs using a knockout?
@stevenpersinger6577 2 ай бұрын
@icevariable9600 I perform better and faster and more efficient and I don't have to worry about bond bushings in eccentric or concentric
@icevariable9600 2 ай бұрын
@@stevenpersinger6577 you still don’t need a binding bushing for holes you cut out?
@SparkyChannel Ай бұрын
I totally agree with you!
@TheBoyBd1 6 ай бұрын
So to be clear. From the ground bushing lug...does it go straight to the panel or ground the disconnect first then the panel ?
@icevariable9600 2 ай бұрын
Did you find the answer to this question?
@effthegop 5 ай бұрын
Concentric if voltage to ground is over 250 volts to ground. What do I win :).
@wim0104 6 ай бұрын
and it's not just about the knockouts, isn't it? any raceway with #4 or up...
@alexmurphy8576 6 ай бұрын
Nobody around me follows that 😂😂😂
@Bryankrall8090 6 ай бұрын
BILL!
@SparkyChannel 6 ай бұрын
Hi Brian!
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