Fused Disconnect - Rear Conduit Entry

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xguard

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Baton Rouge, LA
What requirments apply to entering a fused disconnect (600A) from the back of the disconnect? Specifically how close can the edge of the conduit entry be to the lugs. This installation is parallel 350MCM.
 
Smart $ said:
I agree there must be 8" to the enclosure wall opposite the lug entry, but there is no spacing requirement for conduit entry to lug that I know of.
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I was wondering about that.

I will be honest, I punch holes where I want and make it work. Never been called out on it.
 
iwire said:
I was wondering about that.

I will be honest, I punch holes where I want and make it work. Never been called out on it.
Click to expand...

I usually don't place the edge of the KO any closer than what the edge of the lug is to the closest part of the enclosure.

Jap>
 
Smart $ said:
I agree there must be 8" to the enclosure wall opposite the lug entry, but there is no spacing requirement for conduit entry to lug that I know of.
Click to expand...

In reading all of 312.6, especially the 1st paragraph of 312.6 itself, and the header to the table "Minimum wire bending space....", I have always thought the Table applied to the deflection of the conductor itself. You have given me pause for 2nd thought.
 
Smart $ said:
I agree there must be 8" to the enclosure wall opposite the lug entry, but there is no spacing requirement for conduit entry to lug that I know of.
Click to expand...

I guess we could just let the conduit rub right up against the lug and be code compliant then ....:p

JAP>
 
jap said:
I usually don't place the edge of the KO any closer than what the edge of the lug is to the closest part of the enclosure.
Click to expand...
Design parameters permitting, I'll put KO's as far away from the terminals as I can in a disconnect. Given restrictive parameters, I do as iwire does... make it work.
 
jap said:
I guess we could just let the conduit rub right up against the lug and be code compliant then ....:p
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Lug would have to be pretty close to back wall to get it to rub. That's not going to happen if I have any say on the matter... :roll:
 
augie47 said:
In reading all of 312.6, especially the 1st paragraph of 312.6 itself, and the header to the table "Minimum wire bending space....", I have always thought the Table applied to the deflection of the conductor itself. You have given me pause for 2nd thought.
Click to expand...
There's no bending radius requirement for individual conductors... only the space to bend them. I've had to do what I call curly Q's to get the wire in the lugs. Definitely not pretty, but if it works... :blink:
 
Smart $ said:
There's no bending radius requirement for individual conductors... only the space to bend them. I've had to do what I call curly Q's to get the wire in the lugs. Definitely not pretty, but if it works... :blink:
Click to expand...

Curly Q, loop whatever you want to call it.

Sometimes you just can't get the pipe into the equipment in the best location for pretty conductors in the enclosure.
 
I was thinking the OP might be concerned about the conduit shorting out to the terminal from being too close, rather than the wire bending issue,,,,, maybe not.


JAP>
 
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