crsimmons
Member
- Location
- Lancaster, CA USA
We are needing to sense voltage on some 500mcm cables off several large breakers. Do you know of a voltage switch with a dry contact that actuates when voltage is present? The voltage range is 120v to 240v.
We are guessing there is something available out there that operates the same way a non-contact "tick-tracer" type pen voltage tester works. But, it would have a dry contact like a current switch does.
We cannot put a small #14 wire under the same lug of the breaker as the 500mcm cable according to the NEC or we would use a pilot relay.
Or, we would use a current switch in this application but, at times there is no load present on the bus duct the breaker is serving. We are trying to prove that voltage is present off the breakers (which do not have auxiliary contacts).
Any information, advise or help would be appreciated.
Thank you,
Chris Simmons
We are guessing there is something available out there that operates the same way a non-contact "tick-tracer" type pen voltage tester works. But, it would have a dry contact like a current switch does.
We cannot put a small #14 wire under the same lug of the breaker as the 500mcm cable according to the NEC or we would use a pilot relay.
Or, we would use a current switch in this application but, at times there is no load present on the bus duct the breaker is serving. We are trying to prove that voltage is present off the breakers (which do not have auxiliary contacts).
Any information, advise or help would be appreciated.
Thank you,
Chris Simmons