As a professional electrician allow me to point out a few things that need to be address in your fused disconnect. 1. I see what appears to be 10awg 30A wire, you say it was tapped of the mains that are fused for 200A. The fuses will never blow and burn the wire or cause a structure to burn. Hence your whole problem. You should have a pony panel from the mains to a 30A breaker. 2. Going into the house I see the 200A mains heading into the back structure with no cut protection. The mains are now exposed to burring and cutting on the sharp knockout of the box. BANG!!!! 3. Get some anti oxidant of those copper wires. They man with the green paint will attack it and cause higher resistance on the wires. This in turn creates heat and more resistance and more heat....etc......BANG!!!! 4. I will also mention the lack of a ground wire bonded to the neutral in the disconnect. 5. PVC conduit is cheap and does a very good job protecting your wire. IF you opt. out of the conduit do use direct burial wire (UF designation) or "the grey stuff". 6. 24" minimum depth for buried wires too (36" for 100A +), as a rule for my company at the 12" mark down we lay in red electrical caution tape so that when the next guy starts digging there they hit that first and warn them of what they are digging into. But all in all a pretty good video on the use of a locator!
No doubt the panel was a mess. I just bought the place and slowly fixing all the problems. A subpanel has been added since this video was made. The electrical line I was locating was abandoned. A new line was run in plastic conduit. I'll never use direct burial cable. The old line was direct burial and it is completely crapped out.
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As a professional electrician allow me to point out a few things that need to be address in your fused disconnect.
1. I see what appears to be 10awg 30A wire, you say it was tapped of the mains that are fused for 200A. The fuses will never blow and burn the wire or cause a structure to burn. Hence your whole problem. You should have a pony panel from the mains to a 30A breaker.
2. Going into the house I see the 200A mains heading into the back structure with no cut protection. The mains are now exposed to burring and cutting on the sharp knockout of the box. BANG!!!!
3. Get some anti oxidant of those copper wires. They man with the green paint will attack it and cause higher resistance on the wires. This in turn creates heat and more resistance and more heat....etc......BANG!!!!
4. I will also mention the lack of a ground wire bonded to the neutral in the disconnect.
5. PVC conduit is cheap and does a very good job protecting your wire. IF you opt. out of the conduit do use direct burial wire (UF designation) or "the grey stuff".
6. 24" minimum depth for buried wires too (36" for 100A +), as a rule for my company at the 12" mark down we lay in red electrical caution tape so that when the next guy starts digging there they hit that first and warn them of what they are digging into.
But all in all a pretty good video on the use of a locator!
No doubt the panel was a mess. I just bought the place and slowly fixing all the problems. A subpanel has been added since this video was made. The electrical line I was locating was abandoned. A new line was run in plastic conduit. I'll never use direct burial cable. The old line was direct burial and it is completely crapped out.
The Null is the location of your wire. it is NOT where the tone is loudest.
Your supposed to ground the system not connect to both wires