Linked Questions

35
votes
3answers
27k views

When doing electrical work, what do I use to check wires are safe?

If I am thinking of replacing a light switch, a light-fitting, a socket/outlet or doing other work with household wiring where there may be 120 Volts or 240 volts present ... There is already a ...
10
votes
4answers
13k views

3 phase (delta) power to single phase space heater

I bought a 240V single phase, space heater for heating up a warehouse space. The warehouse has 240V power in a delta configuration (no neutral). My understanding is that in a delta configuration, ...
9
votes
2answers
3k views

Is a negative reading from a non-contact voltage detector sufficient?

I'm a beginner at doing electrical work, and I want to make sure I'm not taking unnecessary risks. Let's say that I'm preparing to work on some wiring. I have a non-contact voltage detector that ...
6
votes
3answers
743 views

Replacing a power outlet safely

I want to replace some power outlets in my condo with ones that have built-in USB ports. The condo was built in 2008. My thinking is I can simply turn off the breaker for those outlets and get to ...
6
votes
3answers
4k views

Electrical box - What are all these wires?

I want to install a light fixture on a box that's in the ceiling. I opened it up and I saw WAY MORE wires than I expected. I expected just a green, black and yellow wire. Here are two photos of the ...
6
votes
2answers
2k views

How is it possible to get an electric shock even with mains power off?

I was changing a socket outlet yesterday. I switched off the mains power at the consumer unit (the big red switch) so thought all was safe. I disconnected the old socket, but when I went to fit the ...
6
votes
2answers
4k views

Why is voltage detected in my ceramic tile floor?

I found out (in a rather uncomfortable manner) that there is a potential difference between the phase line in my home and the ceramic tile floor. My Fluke multimeter reads 30V AC, I assume the reading ...
5
votes
3answers
2k views

Which terminal to use on my multimeter

I have read the manual for my new multimeter but unsure which (red) terminal to use for what. The meter has one VΩmA fused 500 mA max terminal and one Unfused 10A Max terminal. I just want to measure ...
5
votes
1answer
1k views

Replaced Blower Motor, but A/C won't stay on unless power button is held down

My HVAC has an electric furnace blower motor for both heating and cooling. I called a repair guy out who explained that the capacitor was good, I just needed a new motor because it had gone out. I ...
3
votes
2answers
5k views

Stud sensor finds current on large wall area

The detached garage for my home was built by the previous owner in 2000, the garage interior is naked particle board directly on wood studs, and the insulation has paper backing (not foil). When ...
1
vote
1answer
811 views

Why do my new basement lights trip the breaker?

I am upgrading my basement and the builder initially put the family room and two lights in the basement all on one circuit. During the remodel I tried adding two more lights to that same run and it ...
1
vote
4answers
31k views

Why would three-way switch travelers both show as hot?

We have a three-way switch setup to control our living room light. Our staircase is on the far wall of our living room and one switch is downstairs while the other is at the top of the stairs. The ...
1
vote
3answers
1k views

One light switch controlling multiple lights

So my husband and I bought an older house (1956). After we moved in, we noticed that if we turn off a certain switch in the kitchen, we can't turn on the lights in the hall, bathroom, or bedrooms. ...
1
vote
3answers
202 views

Test Connection for vintage lighting fitting

Out apartment has one of those vintage light fittings, with the edison bulbs in. It also has 4M high ceilings. One of the bulbs has popped and repeatedly pops if i replace it. so i'd like to take the ...
1
vote
1answer
801 views

Wiring a light fixture

I am replacing a light fixture in my bathroom with a LED fixture. My house is from the late 20s so there are some quirks. In this case I have 3 sets of wires into the box. There are 6 other lights, ...

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