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#77414 - 06/01/01 05:25 AM "pecker Head" clearance
Ragu Offline
Junior Member

Registered: 06/01/01
Posts: 7
Loc: Elkton, Md USA
I was looking for the applicable section giving the clearance distance required around a motor Pecker Head. It's an outdoor motor 480V. Does this fall under electrical enclosure clearances? (3+ft) I know about the fixed terminal connection box volume and terminal clearance but what clearence is required around the outside of the enclosure?

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#77415 - 06/07/01 04:38 PM Re: "pecker Head" clearance
doc Offline
Member

Registered: 11/25/00
Posts: 119
Loc: Texas
I dont think there is a clearance as for code but it has to be accessible and it needs to be in a space that u can safely work in it and open cover
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#77416 - 06/08/01 05:07 PM Re: "pecker Head" clearance
Tom Offline
Member

Registered: 01/01/01
Posts: 1069
Loc: Shinnston, WV USA
Doc,

I really can't think of anything in the NEC that requires a motor terminal housing to have any particular clearance. I don't think that 110-26(a) working space requirements apply. If they did, at least 1/2 of all motors I see would be in violation.

The only location requirement that I am aware of is spelled out in 430-14 & there is no mention of the motor terminal housing.

Tom
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#77417 - 06/08/01 06:47 PM Re: "pecker Head" clearance
sparky Offline
Member

Registered: 10/18/00
Posts: 5545
It would seem working clearance from what the motor turns is just as much a factor.


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#77418 - 06/13/01 10:12 AM Re: "pecker Head" clearance
WARREN1 Offline
Member

Registered: 05/09/01
Posts: 184
Loc: Greenville, SC, USA
Art. 110-26 begins by stating that sufficient access and working space shall be provided. This should force the designer/engineer to insure adequate space has been allowed for in the original design. But then the owners maintenance team may need the space for some other reason, valid or no.
It appears that the key words in Art. 110-26(a) is "while energized shall comply with dimensions of.....". If the motor is shut down for maintenance, then perhaps only reasonable access, no matter difficult, may be the key to such maintenance.
Perhaps this CMP should address this situation next time around.
Art. 430-12 addresses the motor terminal housing and its details, but not working clearances around it.
Art. 430-14 requires motors to be located so maintenance can be readily be accomplished.
Sorry I am late with this post.

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#77419 - 06/13/01 07:14 PM Re: "pecker Head" clearance
doc Offline
Member

Registered: 11/25/00
Posts: 119
Loc: Texas
IF this motor is on a piece of equipment that is mfg. by a company then they do not fall under the code and can pretty much do as they please,now if this is something that this RAGU is modifying or building then he should make it safe and accessible this make cents to any one
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