It certainly will work.NO IT WILL NOT WORK.
You can...the biggest issue is the breakers...you must use a straight rated breaker for the installation. You cannot use a slash rated breaker where the lower voltage in the rating is less than the line to line voltage. ...cain a use a 3 phase panel for a 3 phase corner grounded service ( just use 2 of the lugs on the 3 phase breaker )
In the few times I have done corner grounded work I always used 1 PH panels rated for corner grounding. I see no reason to use 3 phase panels for this. Am I missing something here?It certainly will work.
But you have to check with the manufacturer.
Square D QO 1PH panels are rated for 3PH corner grounded.
Not at all. A grounded conductor is a grounded conductor.In the few times I have done corner grounded work I always used 1 PH panels rated for corner grounding. I see no reason to use 3 phase panels for this. Am I missing something here?
In the few times I have done corner grounded work I always used 1 PH panels rated for corner grounding. I see no reason to use 3 phase panels for this. Am I missing something here?
No. As Jim said, some 1ph panels are even listed for the purpose.Am I right on my thought process on this?
Single phase panels and 2 pole breakers are fine for corner grounded systems as long as the panel is rated for it and the breakers are straight rated.I deal with several corner grounded systems. Most of them are small water systems that require 3 phase for motor loads. We always use 3 phase panel/breaker arrangements.
I see using a single phase panel, I this arrangement, as incorrect. Am I right in this? All of our breakers are straight rated, no slash ratings.
There is no potential to ground on any grounded conductor, so using a 1ph panel and utilizing the grounded conductor would add no risk but seems wrong to me. Am I right on my thought process on this?
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Single phase panels and 2 pole breakers are fine for corner grounded systems as long as the panel is rated for it and the breakers are straight rated.
You mention "small water systems" and using corner grounded systems. Are you certain of this? More typical would be 120/240 3 phase delta with a center tap neutral. In that case of course you need 3 phase panels.
Yes, convertible Main Lug Only (MLO) load centers are suitable for this application, but the short circuit rating is limited to 5,000 AIR. Only two-pole QO-H branch breakers, rated 240Vac may be used. The MLO cannot be converted to a Main Breaker panel and maintain the rating. Main Breaker load centers are not suitable for the application. Please refer to the Technical Information pages of Catalog Section 1100CT9901 for further information.
Well, technically speaking, it's not that they can't be slash-rated, but that the voltage to ground can't exceed the lower rating.Single phase panels and 2 pole breakers are fine for corner grounded systems as long as the panel is rated for it and the breakers are straight rated.
We used to have lots of 480 corner grounded services in our region fo center pivot irrigation. Most of the POCOs are getting rid of them as time goes on.I am certain they are 3ph 480v corner ground systems. Most of them are 30+ years old. I have 7 480v 3ph corner ground systems I take care of regularly.
If you measure from one leg to ground, at the service, you have 0 v.
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