Need Minimum Clearance - 208V Bolts? 1

[RDL914]

Does anyone know the the minimum clearance of open air 208v conductors? I have an STS with B & C phase bolts that are too close together and I need to know how much space between I need. Picture attached.

Couldn't find it in NEC 2008.

Thanks.

 

[resqcapt19]

I don't think that is addressed in the NEC. The closest I know of is 366.100(E) in the 2008 code, but that section does not directly apply to your question.

 

[rbulsara]

It will be a manufacturing requirement or a testing lab's such as UL or ETL. Look up NEMA too.


By the way there is no picture attachment.

Rafiq Bulsara

http://www.srengineersct.com

 

[mcgyvr]

A little info here

http://www.harkis.harting.com/WebHelp/EGds/WebHelp/GBgdsCreepage_and_clearance_distances.htm

and here

http://www.creepage.com/

Please note these are following specific standards that might not apply in your situation.

 

[alehman]

One inch in air, two inches on an insulating surface.

Alan
“The engineer's first problem in any design situation is to discover what the problem really is.” Unk.