208v or 220V receptacle

[l3city]

Hi fellas, well I have a situation in which I have a 120/208V 3ph system. The customer specified he wants 220V receptacles. This always has been confused me. Do I need a special 120/240V xfmr dedicated to operate those 220V receptacles? :-?
Thanks ahead for any input

 

[mdshunk]

I'd want to know what he's going to be plugging up in that receptacle. It is quite possible that the equipment will be just fine on 208. It is also equally possible that you'll need to put a buck-boost transformer on that circuit to get him closer to 240 for that receptacle.

 

[raider1]

I agree with Marc,

It depends on what the equipment that is to be pluged into the receptacles requires. A lot of equipment is rated at 208 or 240 volts but some equipment might be very specific and require no less than 240 volts.

Chris

 

[acrwc10]

If you do need to "boost" up to 240 3phase make sure you have the correct x-fmer. some times it is a straight 240 with no nuetral other times not , if you choose the wrong set up you can "wind" up < pun intended> with 240 hot to hot and 190 volts to ground.

 

[infinity]

The customer has a 208 volt system and he wants you to provide 220 volts? There are no 208 volt receptacles. A 250 volt device would be used for 208/220/240 volt systems. Did he say that his equipment requires 220 volts?

 

[dezwitinc]

4 pole, 4&5 wire, 3 phase, Y receptacles are usually rated 120/208.
http://www.hubbellcatalog.com/bryant/catalogpages/section-h.pdf
See pages H41, H42, H43

 

[infinity]

4 pole, 4&5 wire, 3 phase, Y receptacles are usually rated 120/208.
http://www.hubbellcatalog.com/bryant/catalogpages/section-h.pdf
See pages H41, H42, H43

Yup, you're right. I was focused on a single pole 250 volt receptacle.

 

[Jim W in Tampa]

Customers seldom know what they actually need.This is why we need a paper trail on extras