Questions tagged [power-supply]

44 questions
13
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1 answer

Where can I get a cover for a main supply?

My house (I live in the UK) failed an electrical safety inspection because of a missing main supply cover. I have tried using google to find one to buy but can't find anything at all. Does anyone know how I can go about getting the right kind of…
lapsel
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7
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Is my replacement light switch wiring correct?

I have a single pole Decora light switch in my upstairs hallway that controls our attic light. I replaced the old switch (a single pole toggle, we are new owners of the home), and want some confirmation that my setup is correct. There are 4 total…
6
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3 answers

Can a power transformer cause building vibration

For six weeks something that runs when it's cold outside has caused shaking of the floors. There is a transformer for the powerlines at the back of the property. Neighbors to right and left don't notice anything. What can be the cause? Thanks.
Mchris
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5
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110.15 High-Leg Marking

In the 2020 Edition of the National Electric Code, in Section 110.15, titled High-Leg Marking, it states, ...only the conductor or busbar having the higher phase voltage to ground shall be durably and permanently marked by an outer finish that in…
4
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3 answers

Connecting Barns/Houses To mains power

I'm in the process of converting three barns into houses. Two of the barns are located 50 meters away from the main power pole. I'm considering two options for getting electricity to the barns. Option 1 is to install two meters at the bottom of the…
BBC Basic
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3
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8 answers

How to detect power cut remotely?

I need to know if there is a power cut in a building. I have to detect this remotely, because I am usually not present at the building. I need to detect the power outage in less than 24 hours to save the foods in the fridge! The process could be…
Meysam
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2
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1 answer

Why live to ground voltage is only 0V (in a 220V AC power outlet & there is also electric shock on the panel)?

my name is Kelvin. I'm a trainee hydraulic engineer in Indonesia. I apologize if this question has been answered before / if this question is too basic. So we have a problem with electric shock coming from an electric panel. This panel runs on 220V…
2
votes
1 answer

ALL but one CBs were open and the MB was closed. The open CB's ALL tripped at the same time How is that possible?

Last night I woke up about 3AM. I noticed my clock wasn't on. I thought maybe there was a community power outage. I got up to investigate. I then observed my outside lights to be off and other lights that are normally on during the night to be off…
David
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2
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3 answers

How can a faulty electric cord damage a power tool?

My almost-new 13-Amp electric lawnmower stopped working. I had turned it off after using it for a while to talk to someone, and after several minutes, attempted to turn it on again. To my surprise, it didn't turn on, nor make any sounds. I had used…
2
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0 answers

Why do we lose power when it is slightly cool in a hot region?

I spend part of the winter in a condo in Quintana Roo, Mexico, which is a subtropical area, with normal daytime high temperatures in the upper twenties to low thirties celsius, and nighttime temperatures in the low twenties. Whenever we get a cool…
Harriet Lyons
2
votes
1 answer

Why does my Uninterruptible Power Supply produce lower watts on backup battery than line power for my pellet stove?

SOLVED Problem: When my UPS does the switch-over from line power loss, the pellet stove runs but you can hear the stove motors slow down, and the wattage meter on the UPS drops from ~150w nominal to ~100w nominal. I say "nominal" because the auger…
1
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1 answer

2 Wire-no ground power source connected to switch powering 3 lights with 2-wire with ground

I have a pull-chain light in the attic of an older house (1964) we recently purchased. The power coming into the light fixture is old 2-wire with no ground. I would like to remove the pull-chain light and replace it with a single-pole switch…
1
vote
1 answer

Can I use 15amp inlet and outlets with 12 gauge wire?

I am installing a 15A flanged inlet on the outside of my shed to get power there when I need it, but my whole house is wire with 12 gauge wire. I want to put a few outlets around the shed for tools and such but just want to make sure I don't burn…
Sean
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vote
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Renters using too much power and the breakers keep going off

I'm renting four rooms in a 4 bedroom apartment (bought the building this way). They have a fridge, stove, microwave, washer, dryer, etc all in the kitchen. Then, they also have AC's in 3 out of the 4 bedrooms and 3 fridges in 3 out of the 4…
CreativZero
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Can I use a universal power adapter for this old Ikea lamp?

I bought this old Ikea lamp from a thrift store the other day, but it is missing its original power adapter. It's got this plug that looks like an old RCA cable. I saw on reddit that the original adapter is called a KUA1200200L, but the only ones I…
user173979
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