How to safely remove old house wiring during a renovation
Removing old house wiring yourself requires shutting off the main power supply and methodically tracing circuits back to the panel before pulling cables or hardware out of framing. Attempting to rip out knob-and-tube or legacy wiring without proper isolation risks hidden live connections, structural damage, and severe electrical hazards.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1Hiring a professional electrician for the taskDid this help you?
- 2Using a voltage tester to verify power is off before touching wiresDid this help you?
- 3Hitting them with a hammerDid this help you?
- 4Using a pry-barDid this help you?
- 5Knocking tubes out with a rubber hammerDid this help you?
- 6reconnecting the wires the way they were originally connected to restore powerDid this help you?
- 7Snip and yank the line carefullyDid this help you?
- 8Cut the wire and cover the hole with a sheetrock patch or blank plateDid this help you?
- 9Turning off the breaker to investigate the electrical box connectionsDid this help you?
- 10Hiring a professional electrician to safely remove the wiringDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Recently we wanted to remove an old kitchen fan that's not in service anymore, but now the kitchen lights and some other lights in the house doesn't turn on.”source ↗
“How can I abandon this circuit properly?”source ↗
“Would it be safe to just reconnect the black to black and white to white to restore the wiring?”source ↗
“I’m in a major home renovation project which includes full re-wiring. I’m hoping to remove all the old wiring myself, how does one go about that safe/correctly.”source ↗
“I need to remove this extension cord that runs along the wall.”source ↗
“The previous owner wired it directly into the wall and was unsure of the best practice for removing it.”source ↗
“I have some old knobs secured to joists that I'd like to remove, but there doesn't seem to be an obvious way other then hitting them with a hammer.”source ↗
“I'm trying to figure out if it is a landline or internet line and if it's an old telephone landline, if it is safe to remove.”source ↗
Where this came up
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