GFIs and AFCIs [RE-wrenches]

Ray Walters remotech at taosnm.com
Mon Aug 5 16:15:50 PDT 2002


Hi Allan;

We don't reccomend GFI receptacles on mod sine inverters at all anymore.
The only way to go in our book is GFI breakers at the load center. No hum,
No phantom loads, and the Entire circuit is protected.

Ray

At 03:11 PM 8/1/02 -0600, you wrote:
>Wrenches.
>The following questions come from our local AHJ, who encountered something
>he hadn't seen and asked us for advice. We didn't know either, and I offered
>to send him answers from Wrenches. Hooray for an inspector who asks a Wrench
>for help!
>
>1. Who has experience with GFI breakers on inverter power? Do some work
>better than others, especially with mod-square?
>He discovered that on a system he was inspecting that had a DR inverter and
>Square D service panel, the GFI breaker appeared to function OK at the
>breaker, but a tester he used at a receptacle failed to trip the GFI
>breaker. (By the way, he offered that in his experience Eagle brand GFI
>receptacles were less susceptible to problems when test-tripping.)
>
>2. Who has had any experience with Arc-fault circuit interrupters, required
>by the 2002 code for bedrooms, when running on inverter power? I have seen
>nothing on this topic.
>
>Thanks for any help.
>Allan at Positive Energy

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