5 Sep
2014
5 Sep
'14
6:19 p.m.
On 09/05/2014 04:32 PM, Eric Smith wrote:
I forgot to mention that in that case, code requires
that you mark the
GFCI outlet "no equipment ground". It also has to be marked "GFCI
protected", but that marking should be present when you purchase the
outlet.
I seem to recall something odd about NEC requirements for earth ground.
I seem to remember (and this is from long ago, so it's probably wrong)
that you get to drive one ground rod into the ground and if it measures
more than 600 ohms to line neutral, you can drive another one into the
ground and add it. After that, code is silent as to what to do next.
This can be a problem in dry, sandy soils.
It just seemed a bit odd to me that code didn't require more than just
the two attempts to get a good earth ground.
--Chuck