Mrdave714
Member
- Location
- California
- Occupation
- Electrical Contractor
40 years in, but I don't do a lot of 3 phase work.
I've got a commercial project. 3 existing services. 2 of them are 1Ph 240/120. The 3rd service is 3Ph 240v 3-wire corner grounded.
The 3P 240v service is supplying a 3ph 208Y120 transformer.
I'm thinking of combining all 3 of the services into a single 3ph 4 wire 240/120 service. (if POCO can provide)
Question is: Can I use the existing transformer on the new 4 wire service or is it only good for 3-wire corner ground supply?
My 2nd question is as I'm new here, how do I attach a photo of transformer faceplate for reference so people can answer ???
Thanks in advance for any help!
I've got a commercial project. 3 existing services. 2 of them are 1Ph 240/120. The 3rd service is 3Ph 240v 3-wire corner grounded.
The 3P 240v service is supplying a 3ph 208Y120 transformer.
I'm thinking of combining all 3 of the services into a single 3ph 4 wire 240/120 service. (if POCO can provide)
Question is: Can I use the existing transformer on the new 4 wire service or is it only good for 3-wire corner ground supply?
My 2nd question is as I'm new here, how do I attach a photo of transformer faceplate for reference so people can answer ???
Thanks in advance for any help!