Gfi

[teco]

Hi,

Okay I haven't done any residential work for years. I was ask to look at the wiring in a cottage a friend might buy. Shouldn't my fluke meter trip a GFI rec when testing from hot to ground? I know a GFI measures current from hot to neutral so I'm wondering why I'm not tripping it out to ground?

 

[480sparky]

No current flow?

 

[infinity]

The resistance of a DMM is too high to cause a large enough current imbalance to trip the GFCI. Try an old solenoid type tested and it will trip.

 

[teco]

The resistance of a DMM is too high to cause a large enough current imbalance to trip the GFCI. Try an old solenoid type tested and it will trip.

Thanks, Thats what I remember. Using my old Sq D wiggys.

 

[cadpoint]

Hi,

Okay I haven't done any residential work for years. I was ask to look at the wiring in a cottage a friend might buy. Shouldn't my fluke meter trip a GFI rec when testing from hot to ground? I know a GFI measures current from hot to neutral so I'm wondering why I'm not tripping it out to ground?

I'm at a lost to think that, this is a measuring device, as to how it will trip a GFCI in any respects! It's a Meter!

A wiggy is still an inference to some resistance of the coils as one applies
some avaiable measure of the resistance of this colils, your not injecting any measure that will induce a reading your reading the coils based on the power that one sees, OK, I don't get it!

 

[resistance]

Hi,

Okay I haven't done any residential work for years. I was ask to look at the wiring in a cottage a friend might buy. Shouldn't my fluke meter trip a GFI rec when testing from hot to ground? I know a GFI measures current from hot to neutral so I'm wondering why I'm not tripping it out to ground?

I sometime use my analog to trip GFCI's (Hot to grounding slot), why don't you just push the test button, or use a plug tester, and be done with it.

 

[infinity]

I'm at a lost to think that, this is a measuring device, as to how it will trip a GFCI in any respects! It's a Meter!

A wiggy is still an inference to some resistance of the coils as one applies
some avaiable measure of the resistance of this colils, your not injecting any measure that will induce a reading your reading the coils based on the power that one sees, OK, I don't get it!

He asked about testing hot to ground. If you're testing from hot to ground the current flow is outside of the typical hot-neutral current flow monitored by the GFCI circuitry. If that current flow between hot-ground is above 4-6 ma the gfci will trip.

 

[cadpoint]

Your right, I don't know why I throw in the Wiggie, and coils and such!

I concour...

 

[teco]

He asked about testing hot to ground. If you're testing from hot to ground the current flow is outside of the typical hot-neutral current flow monitored by the GFCI circuitry. If that current flow between hot-ground is above 4-6 ma the gfci will trip.

Thank you infinity. Obviously one could push the test button. I was just surprised that its been that long since i tested a gfi to ground i was so use to tripping it with my tester. Funny how one takes things for granted. Using a wiggy seems so long ago.

 

[iMuse97]

Thank you infinity. Obviously one could push the test button. I was just surprised that its been that long since i tested a gfi to ground i was so use to tripping it with my tester. Funny how one takes things for granted. Using a wiggy seems so long ago.

I use it every day for basic testing. Never fails. That's key.

 

[vinster888]

Using a wiggy seems so long ago.

i got a couple of them and i keep going back to the original Wiggy. still works to this day and doesnt get the issues with stray voltage that the newer testers get. :wink: