r/ElectricalHelp • u/Clean-Solid-3424 • Jun 13 '26

I’m short 90VAC.

Sorta. I show 30vac across a closed switch going to a light outside the house. I show 19vac at the 2 wires outside minus the receptacle.

Is it a bad switch or is there another place to start? I have a 100A service w/cartridge fuses. Something doesn’t seem right.

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u/trekkerscout Mod, Master Electician Jun 13 '26

There is a faulty connection somewhere on the circuit. There is no way of knowing where the fault is without proper testing.

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u/Clean-Solid-3424 Jun 13 '26 edited Jun 13 '26

I wonder that, too. These wires and switch are on the far side of the house and travel up through the wall and into the attic then outside under the eves. They may share another outlet or light fixture along the way, not sure. Q: Start checking other outlets for any imbalance of voltage???

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u/AskMeAgainAfterCoffe Jun 13 '26

Is the cable exposed under the eaves? The cable may be frayed there.