600V 3Ph GFI Delta

[Fred]

Hi Group!

Working on trying to provide a solution to implement installing GFI
protection on a 600V 3ph Delta feeder for a welder being used underground in
wet conditions.

Feeder ampacity being asked for is 100A.

Anyone had experience in designing any similar installs?

TIA

Fred

 

[Fred]

Correct .... system is ungrounded and supply is a delta connected secondary
three phase three wire.

Looking for molded case breaker with built in GFI ... are these available?
Manufacturer? Cost?

Fred

 

[Fred]

Yes, was hoping to use a shunt trip breaker with a ground fault sensing
circuit capable of tripping the shunt trip molded case breaker.

Actually the feeder is intended for a bank of about 5 welders working in a
wet environment along with some sump pumps at 3ph 600V.

Trying to put together a bill of material to get this started.

Thanks for sharing your thoughts.

Fred