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Discussion Starter · #1 ·
I have 10, 4 inch PVC pipes entering the back of a 3000 amp switchgear.

I am told I do not need to punch holes and terminate in adapters with locknuts and bushings. I can just cut out the back of the gear to fit the pipes and install end bells and call it good.

This is not normally what I would do, but I can not find where it would be a violation. I briefly looked in 300.

Do I need to use male adapters dressed up?
 

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I think raceways are to be mechanically continuous unless it's entering open bottomed gear. I'll look up the article
 

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Mad Skills
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I have 10, 4 inch PVC pipes entering the back of a 3000 amp switchgear.

I am told I do not need to punch holes and terminate in adapters with locknuts and bushings. I can just cut out the back of the gear to fit the pipes and install end bells and call it good.
What is punching out 10 - 4" holes going to accomplish?
Will connecting the pipes to them bond anything?
Prevent movement?
Protect the conductors from damage?
etc?

What is the actual purpose?
 

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Coming in the back we would punch and use connectors with locknuts.


And before Celtic asks me it is done to comply with the NEC. :)
 

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Mad Skills
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Coming in the back we would punch and use connectors with locknuts.


And before Celtic asks me it is done to comply with the NEC. :)
...but we are talking about coming in the bottom....

Go start you own thread for side and top entry :laughing:
 

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Celtic said:
...but we are talking about coming the bottom.... Go start you own thread for side and top entry :laughing:
He said he's coming in the back I brlieve
 

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Discussion Starter · #9 ·
And in case any of you are wondering where all the buss bars are....check with some Scrapyard's.

Thief's.
This gear was stripped overnight a couple months ago.
 

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And in case any of you are wondering where all the buss bars are....check with some Scrapyard's.

Thief's.
This gear was stripped overnight a couple months ago.
Looks like a housekeeping pad would have been a good idea.

If I was the customer I would have a real problem with the bottom of my brand new gear sitting in water.
 

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flashover said:
And in case any of you are wondering where all the buss bars are....check with some Scrapyard's. Thief's. This gear was stripped overnight a couple months ago.
Someone went to the trouble to steal aluminum buss bars?
 

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Celtic said:
True he did....but looks like bottom in the pic: Can you see part of the radius there or do I need new glasses?
I figured those for load side pipes. There's nothing there to feed the breaker yet by the looks of it
 
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