ECN Forum Forums Code Related Discussion NEC & other Code issues An 'Acceptable Risk'?

Gerald, you turned on a light. I remember reading of the concept to prevent earth leakage, or waste of power. Knowing that the culture in New Zealand, will not permit waste of anything, this can be a reasonable explanation. Just think, this will clear a ground fault through the ground electrode system, we can't do that!.
The ground current trip device, I designed and constructed, 40 years ago, to protect a 4.16 KV submerged marine cable, initiated a trip at 180 ma. I never considered this device to be a ground fault interrupter. I don't think I even knew the term then.

OPPPS.. sorry i got that wrong A type II for houses must operate within 300 milliseconds at 30 milliamps :-0
And they must be install or the circuit must be RCD protected if it is a wet or damp zone.
Sorry for the confusion.

Don;
you'll have to pardon my zeal here, after being the guy that's been held, flashed, choked , as well as other various acts worthy of "Darwinian Award" notice in this trade.

Appy;

can you tell us more on, maybe the differences bettween your ELCB's and RCD's?

They are the same thing just diffenent names
Also called,RCCB,CBELCB,GFI.
Did i miss something along the way?

Appy;
it would seem that we, here, are missing the point.

sparky,
Are you suggesting that we should be installing 30 ma trip ground fault protection on our circuits?
Don

Don;
It seems other countries define electrical safety differently than we do, our rationale being heavily based on litigation.

This is why, to me anyways, the NEC sometimes makes no sense.

just an observation....

I can't see why you wouldnt use them admittedly they are an added cost and some circuits may experience nuisance tripping but they are easily isolated and adressed. Also they are are good sales tool when being beaten down on price. They save lives, shouldnt that be encouraged.