Concentric and Eccentric Knockouts: Which Need Grounding Bushings?
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- เผยแพร่เมื่อ 25 ก.พ. 2024
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GOOD EXPLANATION!! Good morning from Sylmar CA
Thanks Frank!
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.
Yes, that is true. And yes, I'll be using PVC for the GEC. Much easier and less expensive.
Excellent info!
Thanks.
Welcome!
@@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.🫤
Thanks 😊 Sparky! You’re awesome!
No problem, good question!
Nice explanation as always ... Thx
Thanks Eddy!
Another good explanation Sparky.
Thanks Gary!
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
www.nfpa.org/codes-and-standards/nfpa-70-standard-development/70?l=97
Hey bill, can you make a video on bending COMPOUND 90's... THink it would be a great video..
What’s a compound 90?
@@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..
So to be clear. From the ground bushing lug...does it go straight to the panel or ground the disconnect first then the panel ?
Did you find the answer to this question?
Concentric if voltage to ground is over 250 volts to ground.
What do I win :).
BILL!
Hi Brian!
and it's not just about the knockouts, isn't it? any raceway with #4 or up...
Nobody around me follows that 😂😂😂
I wish they would get rid of knockouts in majority of equipment. I'd rather drill my own all day long
What’s the difference in performance when drilling your own vs using a knockout?
@icevariable9600 I perform better and faster and more efficient and I don't have to worry about bond bushings in eccentric or concentric
@@stevenpersinger6577 you still don’t need a binding bushing for holes you cut out?
I totally agree with you!