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"pecker Head" clearance #77414
06/01/01 07:25 AM
06/01/01 07:25 AM
R
Ragu  Offline OP
Junior Member
Joined: Jun 2001
Posts: 7
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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Re: "pecker Head" clearance #77415
06/07/01 06:38 PM
06/07/01 06:38 PM
D
doc  Offline
Member
Joined: Nov 2000
Posts: 123
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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Re: "pecker Head" clearance #77416
06/08/01 07:07 PM
06/08/01 07:07 PM
Tom  Offline
Member
Joined: Jan 2001
Posts: 1,044
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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Re: "pecker Head" clearance #77417
06/08/01 08:47 PM
06/08/01 08:47 PM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,371
It would seem working clearance from what the motor turns is just as much a factor.

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Re: "pecker Head" clearance #77418
06/13/01 12:12 PM
06/13/01 12:12 PM
W
WARREN1  Offline
Member
Joined: May 2001
Posts: 176
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.

Re: "pecker Head" clearance #77419
06/13/01 09:14 PM
06/13/01 09:14 PM
D
doc  Offline
Member
Joined: Nov 2000
Posts: 123
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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