Aquariums and GFCI

[Binare]

Originally Posted by Delphinus

I'm not sure I follow you on that last paragraph, sorry. Is that about arc faults still? Or the nuisance tripping? But nothing else in my house is plugged into the circuits I run my tanks off - they are solely for the tanks and associated paraphernalia..

So how come my GFCI tripped on the static discharge when nothing was on? (I touched the reflector which was grounded, there was a zot, and the GFCI tripped.) There wouldn't have been an imbalance between hot and neutral in that case?? Sorry I'm just trying to understand why it happened.

Oh, one more question .. what does "ID" stand for? I know you're referring to the neutral wire in this case but I've never heard it referred to as ID before, just curious what it stands for?

I was speaking of nuisance tripping in the last paragraph... I'm on a cellphone, hard to keep track of what saying on a tiny screen

The rest well... There's a reason electrician have to go to school a quick run down though:

Referring to that wire as the neutral is INCORRECT even though everybody and their dog does, in a 2 wire system it is the identified conductor, it carries full current. In a 3 wire system its called the identified neutral, it carries the difference of current. Between the two hot conductors. Ie. Your stove is a 3 wire system... Technically called 3 wire edison. Now this is gonna get your goat, what you call the ground is actually just a bond, bonds all metal and equipment, boxes etc together. The id and the neutral are considered the grounded conductors. Inside your panel the neutral (is the neutral in the panel) is jumpered to the metal case... This jumper is the Common Grounding Conductor (if I remember correctly) then goes to earth... Or "ground".

A ground fault interrupt does exactly as its name implies... A fault involving the grounded conductor (identified conductor).

Static can cause tripping, so can inductive loads (motors) static is very high voltage... Even as high as 25,000 volts and very very little current, if that small amount of current introduced is high enough to trip it, it will. Remember kids, volts don't kill, current does. A gfci might trip out at 5mA, it might only take 10mA to kill you. A GFCI does not protect you from shock, it shuts the circuit fast enough that hopefully it doesn't injure you seriously, where as the circuit breaker in your panel doesn't care, its looking for the amps its rated for, you could electricy running through you all day long, as long as the total draw aint reaching what that breakers rated for. Simply won't happen with a GFCI, or atleast shouldnt