347 VOLT LIGHTING

[kenm]

WE HAVE TWO 600V-347V TRANSFORMERS IN THE PLANT I WORK AT.IN BOTH 347V SYSTEMS, THE NEUTRAL IS NOT GROUNDED.IS THIS RIGHT, SHOULDN'T THE NEUTRAL BE GROUNDED.

[CRM]

Rule 10-206 says the system must be grounded at the transformer or the first switch after the transformer. Also read the subsections of rule 10-206. So the neutral would have to be grounded and bonded to the enclosure at either the transformer or the first switch after, but not both.

<font color="#a62a2a" size="1">[ November 11, 2004 10:21 PM: Message edited by: CRM ]</font>

[bigrockk]

Hello Ken,
A little more info on the paticular system you are taking about would be helpful.

Check out these links,maybe this applies to your system in question??

http://www.schneider-electric.ca/www...ml/general.htm

http://www.ipc-resistors.com/pdf/IPCSTOPLIGHT.pdf