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Posted By: Tom Ground detector needed - 08/21/08 10:05 PM
In order to comply with 250.21(B), I need a ground detector. All I've found so far is one made by Cutler Hammer (way too expensive at about $2000) and a detector that uses lights (haven't priced it yet). I'd really like to have something with a set of relay contacts that I could hook to a bell or horn in order to get some attention when the first ground fault occurs.

System voltage will be 480 volts.

Anyone know of a product that will help me?
Posted By: JBD Re: Ground detector needed - 08/22/08 01:27 PM
I have used some from Erickson Electrical Equipment,
http://ericksonelectric.thomasnet.com/category/ground-detectors?
Posted By: JValdes Re: Ground detector needed - 08/22/08 03:54 PM
Would not a megger be a suitable substitution?
Posted By: junkcollector Re: Ground detector needed - 08/22/08 08:00 PM
Originally Posted by JValdes
Would not a megger be a suitable substitution?


He wants a permanent ground detector that is built in. They are normally used and required on ungrounded systems to tell if a leg is accidentally shorted to ground.
Posted By: Tom Re: Ground detector needed - 08/23/08 12:29 PM
JBD,

Thanks for the lead on the Erickson equipment, I'll have my supplier price one next week.

Tom
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