Linked Questions

10
votes
5answers
5k views

Why would replacing this 240 V outlet with a 120 V outlet trip my breaker?

I recently replaced a 20 A 250 V single outlet with a 20 A 125 V single outlet so that I could use it for my microwave in the kitchen. The original outlet had two gold screws and a grounding screw. ...
5
votes
1answer
3k views

Why are tandem breakers on shared neutral (MWBC) problematic?

I hear that shared-neutral or multi-wire branch circuits (MWBC) can have issues when used with tandem breakers (also called duplex, twin, cheater or double-stuff breakers). What is the issue there? ...
1
vote
3answers
11k views

Do I need a neutral wire when connecting a 240V device?

So this is still not very clear to me: I am trying to get 240V to an appliance that does not need a plug (direct wiring), I won't need a neutral wire, is this right? In fact there is nowhere to ...
0
votes
6answers
946 views

Does a 240v water heater circuit require a neutral?

I am confused something. I want to install a tankless water heater. Mounting the device, the plumbing, wiring, routing to the 200amp panel is all easy and straight forward. Where I get stumped is the ...
2
votes
4answers
2k views

How is the alternating current in your home a complete circuit?

Here's what I'm asking: if the electricity flows from the hot wire to device X, then to the neutral wire which ultimately carries the signal to ground/earth at the panel then how does electricity "get ...
1
vote
3answers
2k views

120v vs 240v neutral

I understand that 240v in a house current, the flow is in out/ out in through the two 120v lines from the transformer. What continues to confuse me is the role of the neutral wire in a 120v circuit. ...
1
vote
2answers
1k views

NEMA 10-30 to European 220V?

I have recently relocated to the US and brought European 220V appliances with me. I planed to use power transformers from 110 to 220, but learned that I have NEMA 10-30 outlet in my home, which, from ...
1
vote
1answer
3k views

How can I diagnose the cause of my washing machine shocking me?

Australian 240v power supply. Worked fine without incident for 5 years. One day I plugged washing machine into a plug adapter with no ground connection between the washing machine plug and the power ...
1
vote
0answers
1k views

change 110v outlet to 240v/30 amp?

I need to install a 240v/30 amp outlet for a microwave (a Turbochef, kind of like a microwave on steroids.) I have a single 110v outlet on its own circuit. It's using 10 awg copper. Can I replace ...
1
vote
3answers
242 views

Why is there a live and a neutral in a wall connector?

I get the ground. Since you can plug the plug in either way there is no way for the appliance to know what's in what wire, right?