[SML] Sympathetic GFI Tripping

[Steve Payne]

I used to build and remodel houses and they put in the arc fault
requirement. They dropped it after a couple years except for houses w
aluminum wiring. The were always problematic.


On Thursday, March 3, 2016, Alf Sauve' via Stagecraft <
stagecraft at theatrical.net> wrote:

> Pulled the breaker this morning and ran some tests.
>
> Ohm meter set at 200megaOhms show out of range for hot-neut, hot-gnd and
> neut-gnd.
> Set meter to 2Vac and observered, 0Vac hot-neut,  900mVac hot-gnd and
> neut-gnd.
> This I believe is just induced hum of little consequence, because, current
> measurement show 0mA in all configurations.
>
> Then I put 8oz of water and 8oz of ice in the blender and measured both
> voltage and current in all three configurations during the cycle.
>
> Big disappointment.  Nada. Nothing.  No change in any of the readings.
>
> I'm not losing sleep over it.  The circuit that trips is breakfast room
> lights and 3 outlets in the same area, plus a few basement lights.  No need
> for GFI anyway, so I've put in a regular breaker.
>
> Don't know about, no-load condition, as I'm always reading the paper with
> the breakfast room lights on.  They're four 25W incandescents, not exactly
> a heavy load.
>
> And for reference, the breaker was an arc-fault one.   The electrician
> said that's all they use for all new circuits these days.  He said it's
> just simplifies life not to have to worry about whether it's require and
> the cost, in the end, to the homeowner is negligible.   For reno's they
> have a flat rate schedule for most tasks anyway.
>
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