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For questions dealing with 240 volt electrical circuits, devices, and equipment. This tag covers the similar voltages as well (i.e. 220, 230, etc), since they generally refer to the same thing. Use with the [electrical] tag.

4 votes

Install a 240 volt mini-split condenser with a plug?

So your plan is to move either the condenser or evaporator of your split system? That will result in needing to redo part of the refrigeration lines which is far from a trivial task. Doing a bit of el …
ratchet freak's user avatar
14 votes

A 240V heater is wired w/ 2 hots and no neutral. What should the voltage between two hots read?

It means that the hots are on the same phase. They need to be on opposite phases for your heater to work. Make sure that both hots are fed from a 2 phase breaker in your panel And not a narrow double …
ratchet freak's user avatar
2 votes

Single pole relay on a 240VAC split phase circuit?

Instead of dealing with turning on and off the car charger you can opt for a smart EVSE with current probes that go onto the feed of the panel. That way the EVSE can throttle charging when other loads …
ratchet freak's user avatar
4 votes

Is it safe to bond the neutral to the junction box in a Nema 10-30 circuit?

I would like to know if this is safe, or how to make it so No it is not safe, a 10-30 does not provide a ground and the ground connection in the junction box is not meant to support sustained curren …
ratchet freak's user avatar
1 vote

A 220v Circuit breaker that controls either AC or an inlet switch box

If you want to install an inlet then it must be home run directly to the panel that it is going to power. That is the only way to ensure that you can properly lock out grid power while the inlet is pr …
ratchet freak's user avatar