Special GFCI for Sump Pumps?


Old 03-13-11, 02:35 PM
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Special GFCI for Sump Pumps?

In post #9 in thread http://forum.doityourself.com/wells-...lled-gfci.html it was written by
About five years ago we had this issue come up at a water system in the city. The pump had to be on a gfci.
The pump would not run when placed on the gfi.
We replaced the pump witch was only 6 months old with a new one. Within a week the same thing happened.
We have now learned the there is a gfi that is made for this type of environment. The of the shelf gfi, will not work with submersible pumps. 99% of subs have some leakage and will trip a gfi.
A (good) electrical supply store should know witch gfi will work on the water pump.
Is this a unit with a higher trip threshold? Is it a commercial only exception similar to the no GFCI required one for sump pumps in elevator pits?
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Old 03-13-11, 03:32 PM
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The GFI being referred to may be a 30 mA trip GFI breaker, but as far as I know, they are only allowed on fixed heat trace and ice/snow melting equipment. These are for equipment and not personnel protection. Personnel protection requires a 6 mA trip GFI.
Old 03-13-11, 07:29 PM
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Like CJ I think they might have used Class B 30 mA instead of the Class A 5mA that is needed for life safety.

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