Home Improvement Stack Exchange
Home Improvement Stack Exchange

Questions tagged [power-supply]

31 questions
13
votes
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
  • 145
  • 1
  • 6
6
votes
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
  • 61
  • 2
5
votes
2 answers

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…
CoastCity Lapse 00crashtest
  • 57
  • 5
4
votes
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
  • 41
  • 1
3
votes
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…
B Faley
  • 171
  • 1
  • 6
2
votes
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…
Kelvin Galiny
  • 29
  • 1
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
  • 23
  • 4
2
votes
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…
sondra.kinsey
  • 121
  • 3
2
votes
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…
Joshua Jensen
  • 51
  • 4
1
vote
1 answer

What can cause all LED bulbs / fixtures to rapidly flicker at the same rate?

Since last week, every LED bulb and fixture in my household is flickering at a similar rate. Incandescent and CFL are not affected. Here's what I've had done to try and diagnose the issue: Fuse panel inspected by certified electrician, no issues…
automaton
  • 119
  • 2
1
vote
0 answers

Partial power out when AC is on

Anytime our AC is on we lose power in a few rooms mostly the kitchen. It can be on a few days before it goes out. I’ve had 2 electricians come they both said electric panel looks great , we did replace 3 breakers that were a little loose but they…
Jackson221
  • 11
  • 1
0
votes
0 answers

What to consider when choosing a location for a LED strip power supply?

I'm renovating a bit again and in one place I want to provide lighting via a LED strip mounted at the ceiling corner. That will be 3m of LED strips, and I'd like the place to be well lit, so I'm aiming for 1000lm/m or above. That then equates to…
Vilx-
  • 876
  • 3
  • 10
  • 19
0
votes
2 answers

Powering up Video Intercom and magnetic lock with single POE cable

I have the following setup, Video Intercom powered by POE. I need to power my magnetic lock with 12V. I have a "solution" but don't really want to use it which is Split the cable since POE and 100Mbit use 2 pairs out of 4. And then I could use one…
Alexandre Alves
  • 103
  • 1
0
votes
3 answers

Can a Modified Sine Wave input damage an OLED TV?

I live in an area where power cuts are common. In order to protect my TV from the sudden power loss from a power cut, I am planning to buy a uninterruptible power supply (UPS). Most of the cost effective UPSs have a modified sine wave. Will this…
AB2008
  • 1
1
2 3