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Be careful - a lot of these "quick, solve the housing crisis" invite in sketchy developer practices that cut the most ridiculous corners when building.

Prewiring new homes for solar or electric cars probably costs $100 when building a house. Romex is that cheap and pulling the wires before the walls have drywall is trivial.

Doing it after the house is built is several orders of magnitude more expensive, and a great barrier to homeowners.

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Um, what electrician are you hiring that runs wire from roof to ground and terminates, and provides materials for just $100 bucks?

I think the point is more that you are already paying them $2000 to run some wires from roof to ground, running an additional wire while they’re doing those only costs you an extra $100.

A new trace for 3 to 8 gauge cable depending on load from roof to ground isn't a five min job nor are they cheap, both wire and labor. Hell, I charged 80/hr for low voltage pulling. High voltage is a whole different set of concerns and fire risk. This isn't something to hand wave as incidental and throw numbers around putting silly ideas in people's heads.

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