On Wed, 26 Jun 2013 06:37:26 -0400, wrote:

My neighbor just suffered a serious fire. His house had an enclosed
porch at the rear, with an open, roofed desk connected to the porch
rear. He had several GFI breakers out there, including one on the
rear porch wall. Around one AM, when he and family were asleep,
a fire started at that GFI switch (according to Fire Marshall), and
got going pretty good before their dog started barking. That saved
their lives for sure. Almost killed their dog and cat, though. The
fire badly burned the rear half of the house and sent black soot
throughout the rest of the house. The house is pretty well totaled.

That's what happened. I have to wonder how a GFI could do that!
I heard the Fire Marshall actually say that what happened was the GFI
wires arced, but that was not a 'short' to the GFI. Hence it didn't
trip. So, the GFI presented no protection did it! The arcing just
continued until it started the fire!

All this makes me think that my GFIs are not providing me the
protection I always thought they did. I'm not sleeping as well these
days.

Anyone have an opinion about this?

Thanks

me
GFI devices do NOT protect either the wiring or the house. They are
not designed or intended to. They are to protect YOU and others from
shock in the event of a malfunctioning device (power leakage to case).

An "arc fault" detector MAY have prevented the fire - as that is what
they are designed to do. How effective they are, I don't know.