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Questions tagged [120-240v]

For question dealing with 120/240V single split phase electrical circuits.

120/240V single (split) phase electrical distribution is a common method of electrical distribution in the United States. A 240V transformer is center tapped to provide 120V hot to "neutral" (center tapped lead), and 240V hot to hot.

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Need to run 2 110 AC from a 220 4 wire drop line on a dual 30 amp breaker

I have a $0 budget I need to run 2 110 AC units on 1 240 10g 4 wire supply line on a dual 30 amp breaker. Is this possible
Greg Bruno
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How Important is addressing Ground Reverses?

I have one of those pocket checkers. It indicates a "Hot Ground/Reverse" on one outlet and a "Hot Neutral/Reverse" on another outlet. Should I be worried? Should I avoid those outlets? In a perfect world I would plug my fridge and air fryer into…
Paulb
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Can you replace a 120 V outlet w/ 240V outlet if there are 4 other 120 V outlets on the existing 120V breaker? Can a 240v breaker also run 120V?

I installed a dedicated 240 V outlet next to my breaker box outside to power my new A/C. I am currently running an extension cord. I would like to replace an existing 120 V outlet inside the house with a 240 V outlet so I can do away with the…
Kyle
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Can you wire a regular 120/125v recepticle with two hots?

I have some LED Grow lights that can take 120/240/277 volt of power. The power cord is a a regular 125v plug w/ ground. My question is can I wire a regular 125v recepticle with two hots (1 on brass and 1 on silver) and a ground to a double 20amp…
Long Lee
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Will I have issues in summer with 120v outlets sharing a double pole breaker with my 240v a/c outlet?

I just moved into a 2 bedroom apartment and am planning ahead for summer. While figuring out the breaker box so I don’t put more than one window a/c on a particular circuit I found out all of my 120v outlets in the living room (6 of them) somehow…
bmccour
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Running both a 120v and 240v extension cord in generator simultaneously

Can I plug both the 120v and 240v extension cords into my champion 9000w generator?
Bob Thomae
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I have a Champion 120V generator, I want to use it to plug into a preinstalled/wired 240volt split phase outlet

I have a new champion generator, 120volt at 20 to 30amp. The previous home owner had the same unit but 240 volt. The home has a professionally installed system for power backup but has a 4 pin 240 volt outlet as per photo. My question is, can I…
Andy
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Add 120 volt outlet to a 240 volt disconnect

I have a 240 volt breaker in my main breaker panel feeding a local outdoor disconnect (black, white, red & ground) for an outdoor sauna. Can I take leads off the black, white & groun, before the disconnect and make a local 120 panel with its own…
John Sullivan
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240 volt not supplying 120 over one leg and the neutral

I've got a 4 wire 240 volt receptacle set up to power an electric brewing controller. There is a 240 30amp breaker in my main panel that then supplies a sun panel in the garage that has a 30amp gfci breaker, that then goes to the outlet. The 240 is…
John Keegan
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