"mark" wrote in message . ca...
what rating of a GFCI should I get? 5-6mA or what ,to insure my safety?

Standard, 5-6mA, protects you from geting killed.
It will not protect you from just getting shocked.
You can feel the current on the level of 1mA.
5mA is already very painful and you GFCI could
pass this kind of current without tripping off.
If you can get lower rated GFCI - do not buy it...
It could trip without a good reason and it could be
anoying like hell.

And one more thing as a warning - one time I purchased
a pluged GFCI and it tripped every time a power outage
happened. It did not matter it lasted 1 minute or 1 hour.
Power went down, GFCI plug disconnected the circuit :-(

My tank powered by this GFCI was shut off for the whole
night just because power went down for a minute at 10pm
and I did not go to the tank to check things up...
Next morning my shrimp was laying bottom up on the sand.
It slowly recovered when I turned pumps on and it was
a miracle for me... but the GFCI plug went to the garbagge.