Tripping Device?

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Best I've used is the vintage Amprobe CT-326-C Current Tracer. To top Don's experience, I traced from 120V through a 480 xfrm through a 4160 xfrm. Had a situation with a dead receptacle and no breaker handle tripped. Used a battery to create a current loop on the neutral back to ground and traced it to the correct panelboard. In the panel, found that the hot was not hot. The breaker was actually tripped, but the handle hadn't moved to the tripped position!

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I’ve used that one for nearly forty years, works excellent. Very accurate. With two circuits tied together, it splits the signal, so you locate the strongest, turn it off, then the signal will go full strength, then you can locate the second one. Also great at locating the neutral that goes with that circuit, even if a tap was screwed up, and the neutral comes from another panel!
 
I’ve used that one for nearly forty years, works excellent. Very accurate. With two circuits tied together, it splits the signal, so you locate the strongest, turn it off, then the signal will go full strength, then you can locate the second one. Also great at locating the neutral that goes with that circuit, even if a tap was screwed up, and the neutral comes from another panel!
Only thing it won't do is put a signal on a wire that you can't make a loop out of. Like one where neither end is connected to anything. It will only put a signal on a current flow. A Fox and Hound will do that (trace a dead end wire), I think. Tried their newer AT-6010. Wasn't impressed.

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Only thing it won't do is put a signal on a wire that you can't make a loop out of. Like one where neither end is connected to anything. It will only put a signal on a current flow. A Fox and Hound will do that (trace a dead end wire), I think. Tried their newer AT-6010. Wasn't impressed.

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Yeah, but you lose accuracy with those. You can pull a single wire out of a bundle of 100 with 99.9 % accuracy, where the other bleeds over onto the other wires. But sometimes you have no choice.
 
Yeah, but you lose accuracy with those. You can pull a single wire out of a bundle of 100 with 99.9 % accuracy, where the other bleeds over onto the other wires. But sometimes you have no choice.
I agree. The voltage tracers bleed everywhere. The current tracers not so much. When they do, I am thinking it is due to reactive circuits like a capacitor in a separate branch circuit being charged and discharged from the one you are tracing. You can get a signal on both branches.
 
Best I've used is the vintage Amprobe CT-326-C Current Tracer. To top Don's experience, I traced from 120V through a 480 xfrm through a 4160 xfrm. Had a situation with a dead receptacle and no breaker handle tripped. Used a battery to create a current loop on the neutral back to ground and traced it to the correct panelboard. In the panel, found that the hot was not hot. The breaker was actually tripped, but the handle hadn't moved to the tripped position!

View attachment 2567266
Never tried it the next step up like that. Don't think that the Greenlee would work like you did. It pulls a very short high current pulse and the receiver finds the magnetic pulse from the high current spike. Not sure what the frequency of the pulses was.
 
Best I've used is the vintage Amprobe CT-326-C Current Tracer. To top Don's experience, I traced from 120V through a 480 xfrm through a 4160 xfrm. Had a situation with a dead receptacle and no breaker handle tripped. Used a battery to create a current loop on the neutral back to ground and traced it to the correct panelboard. In the panel, found that the hot was not hot. The breaker was actually tripped, but the handle hadn't moved to the tripped position!

View attachment 2567266
That looks familiar!
 
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