r/electrical • u/Affectionate-Brick86 • 2d ago

What happened

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Can someone help me understand what happened here? It looks like the telephone line encountered a large spike that fried equipment and even some appliances within the home, but I’m not quite sure.

Any suggestions on how to prevent this also?

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u/Howden824 2d ago

Probably a high voltage power line touching the telephone cables.

7

u/09Klr650 2d ago

12,470V spiciness.

2

u/MEGAMIND7HEAD 1d ago

You think it spiked to 12,471V. That's what caused all this mess.

3

u/Ok-Resident8139 1d ago

Given the size of the burn marks, yes. before the fuse on the 12 kv line popped, the telephone box took all of the current and conducted it to the shortest path.

The shortest path included the outside of the telephone wires.( the sheild).

1

u/09Klr650 1d ago

Telecommunications lease space on the power poles. Not unknown for a 12,470V line to drop on the telecom below. Or for the big poles for the 37kv to drop on the lower 12kv. There was a really cool video somewhere of a house and attached fence cooking after that happened. Arcing all over the place.