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31 votes
Accepted

Wiring IKEA light fixture into old fixture

What not to do We get people who find 4-12 non-ground wires they don't understand, and so they take them all apart. I call this "trying to learn electrical by disassembling your house". Every wire ...
Harper - Reinstate Monica's user avatar
13 votes

GFCI receptacle will not reset

Never do random things in electrical. You will stumble upon combinations that will work but will kill you. Pause to learn what exactly it is you are doing. Only then proceed. OK, so you had a ...
Harper - Reinstate Monica's user avatar
7 votes

Wiring IKEA light fixture into old fixture

Do you have a double switch on the wall? The red and black wires in a three core at a light fitting are usually intended to be separate feeds for a fan plus lighting fixture. If you look behind the ...
Phil G's user avatar
  • 599
7 votes

Troubleshooting an Electrical Circuit - Is This an Expected Voltage Drop?

Ohms law disagrees. Since the thermostat is open, current is zero, so voltage drop due to Ohms law (V= I * R) is (V= 0 * R) is (0) that's (zero.) So, the "70V" reading should be 240 (you're ...
Ecnerwal's user avatar
  • 217k
6 votes
Accepted

Electrical shock when touching the water faucet in the shower

I forgot to update this after the electrician visited and I'm terribly sorry, so here is what happened: The fault was caused by a neighbor two houses down the street. He had wired a ground and a ...
Alexander Johansen's user avatar
6 votes

Is It Okay To Put a Temporary Hold on a Contactor?

I am not 100% sure what "hold" on a contactor means. But my suspicion is that it means somehow forcing a contactor to be closed when it might not otherwise be closed - i.e., to constantly ...
manassehkatz-Moving 2 Codidact's user avatar
5 votes
Accepted

Hot and ground shorted with breaker off, but has normal voltage after breaker on

Something with a DC resistance of 4 ohms is plugged into another outlet on the same circuit. Find that other outlet, unplug the device, turn off the breaker and your hot-to-ground resistance will ...
MTA's user avatar
  • 11.4k
5 votes

How to troubleshoot an issue in an electrical cooktop and separate insert oven

I would first look for poor connections. when we turned off the cooktop elements, all power was cut to the oven; there isn't even power to run the lcd panel on the front of the oven to tell you the ...
Ecnerwal's user avatar
  • 217k
4 votes
Accepted

AEG dishwasher not starting

In case someone else comes across this. There was no issue with the machine, it had entered demo mode. To deactivate it press ECO + Auto for 5seconds This just goes to show that AEG should have just ...
Taf Munyurwa's user avatar
3 votes

Central air conditioning system isn't working

If you can verify that there is power to the condensing unit (outside unit) then you have done all most homeowners can do. The fan on your furnace (the thing in the basement) will come on any time ...
ArchonOSX's user avatar
  • 20.1k
3 votes

Skillsaw 5150 - blade won't turn if blade stud tight but blade won't cut if any looser

Make sure that the spacer behind the blade is intact. If it is not then tightening the blade will cause it to bind/rub on the housing of the saw. Also my saw has spacers on both sides of the blade. ...
d.george's user avatar
  • 12.4k
3 votes
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Home thermostat woes

Open the furnace so you see the control panel. Manually depress the kill-switch that powers down the system when the panel you took off is absent. Meter across the secondary terminals of the ...
PHL's user avatar
  • 46
3 votes
Accepted

Why does it take 20-30 seconds for a fluorescent tube to start?

If you have a starter, that is definitely bad. Starters are cheap and easy to install, I can't remember the last time I have seen one. (Electronic ballast don't use starters). Since the lamp appears ...
Ed Beal's user avatar
  • 103k
3 votes

Cut cable tripped breaker and left circuit dead after reset

It's very unlikely the wiring in the walls was damaged. Usually what happens is a weak connection gets fried by the short circuit. As many others have mentioned previously here, these failures are ...
George Anderson's user avatar
3 votes
Accepted

GFCI wiring same as before, but no power

Have you pushed the "reset" button? Many GFCIs need that done when first wired up. And really, get a short 10-32 screw (you can buy green ones for the purpose, or green ones with a loop of ...
Ecnerwal's user avatar
  • 217k
3 votes

100 gallon propane tank backup?

I'm going to guess you meant to write 1000 gallons and 100 lbs, not 100 gallons and 100 lbs. The "standard twin-tank approach" used for 200lb and smaller tanks where two tanks are used has a ...
Ecnerwal's user avatar
  • 217k
3 votes
Accepted

Receptacle upstream from GFCI with an issue causing GFCI to trip?

Solved! I kept moving further upstream from the GFCI once I detected the open neutral or lower voltage neutral, and I found the culprit receptacle. A working receptacle had clearly burned a bit on one ...
Seth Packham's user avatar
3 votes

Oil furnace keeps locking out

2021 Massachusetts General Laws Part I - Administration of the Government Title XX - Public Safety and Good Order Chapter 148 - Fire Prevention Section 10c - Alteration, Repair or Installation of Oil ...
Ecnerwal's user avatar
  • 217k
3 votes

Refrigerator short cycling because of thermostat? and which one?

EDIT: Further testing has revealed that this refrigerator may not have a ground fault, but a thermal overload. This answer addressing a ground fault will remain for future searches of similar problems....
MTA's user avatar
  • 11.4k
3 votes

Troubleshooting an Electrical Circuit - Is This an Expected Voltage Drop?

I found 2 tiny baby mice in the electrical box! Because you're running the box or panel with missing knockouts, a code violation. KO covers are 30 cents. On your 70V measurement, since the switch is ...
Harper - Reinstate Monica's user avatar
2 votes

Troubleshooting Garage Door Opener (GDO) safety sensors

The receiver unit likely shorted out inside from the flooding -- it might be possible to fix it by cleaning the insides thoroughly to get rid of any contamination that'd be causing the short, but it ...
ThreePhaseEel's user avatar
2 votes
Accepted

Furnace flames run for a minute then shut off

The high limit was indeed being reached. This was confirmed by watching the unit trip the high limit after the burners were turned on. I had thought that the unit was getting enough air since my ...
Doryx's user avatar
  • 141
2 votes
Accepted

New GFCI outlet won't reset after tripping when load wires are connected

If I'm understanding, your circuit runs from Service panel -> receptacle A -> receptacle B -> switches and receptacle C -> fridge D In a perfect world, we try to use one GFCI device per circuit when ...
Harper - Reinstate Monica's user avatar
2 votes
Accepted

Water heater too hot, possibly caused by low water flow

The final piece of the puzzle reveals what was going on. What I thought was a 2nd or 1st building shutoff was a shutoff outside the building that only shuts off those two specific bathroom sinks' ...
rrauenza's user avatar
  • 699
2 votes
Accepted

Frigidaire dishwasher won't start (LED flashes instead)

The problem turned out to be the door latch. One of the two sets of leads failed a connectivity test. Replacing the latch fixed the problem.
Paul Schreiber's user avatar
2 votes

Correct drainage setup for a wall-mounted AC?

First, the damage that can be caused is severe. Don't run the unit until this is fixed. Here's the deal, these units are indeed installed on the wall, typically high up on the wall relatively near ...
Paul Logan's user avatar
  • 6,975
2 votes

No power at outlets but breaker isn't tripped. What do I troubleshoot next?

Outside gfci's do go bad replace the one that won't reset with a weather resistant model it should have WR stamped on the face the electronics are coated so they last longer. While you are getting the ...
Ed Beal's user avatar
  • 103k
2 votes
Accepted

Possible causes of a loss of TV signal after reorganising masthead amp and splitter

So it turns out that this wasn't a signal or hardware issue, it was an air-gap issue. I'd incorrectly labelled one of the cables and ended up thinking both ends of the same cable were different cables ...
Matt's user avatar
  • 123
2 votes

How can I tell if this appliance, a kiln, is using 208V single phase or three phase?

Shut off the breakers, and open the access panel on the kilns, and then examine what is connected to what, with great care, and a kiln manual in hand. Skutt has good manuals, in my experience. Since ...
Ecnerwal's user avatar
  • 217k

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