Skip to main content

Questions tagged [voltage]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
61 views

Voltage detected in siding nails and foil insulation

Background: I am in the process of installing siding on my home. Currently I am removing the old siding from one side and I'm trying to identify wire locations so I can take extra precautions when ...
Steve's user avatar
  • 11
-2 votes
3 answers
102 views

PDU power input [closed]

I am trying to figure out if a PDU AP8853 that is build for LAM, EMEA, GCN, APJ can be installed in US and I am not sure if possible or not without any modifications to it. It comes with IEC-309 32A ...
cadobe's user avatar
  • 117
0 votes
2 answers
64 views

What is causing some of the receptacles in my trailer to not output 120V?

Out of the blue my oven/stovetop, my microwave and various other appliances along with some light fixtures stopped working. Making a long story short, it has rained here for days and I don't know if ...
Cody Showers's user avatar
0 votes
1 answer
27 views

When I replaced a ceiling fan, I noticed the fan circuit had about 30 V on it when the light circuit was on and vice versa

I took the old fan down. To make sure I wired the light to the same switch, I tested the voltage at the outlet box in the ceiling before I hung the new fan. When I turned on the light switch, I ...
Christopher Allen Skaggs's user avatar
5 votes
2 answers
253 views

Why is my electrical panel buzzing?

I hope you can help me identify where this is coming from. First my electrical is all metallic with 2 wires only, and ground via metal conduit. After some troubleshooting I've found the following: On ...
Goxoa's user avatar
  • 89
15 votes
5 answers
3k views

Why does my tankless water heater fail when the HVAC is running?

Florida, USA. 1963 or 1964 home. TL;DR: When my central (electric) heat is running, my A.O. Smith tankless (electric) water heater malfunctions. We purchased this home a few months ago. Over the last ...
samh's user avatar
  • 334
0 votes
0 answers
68 views

20 volt drop in electric line

EDIT: Added photo and comment about other fixture. I recently replaced an outdoor fixture because the old one wasn't working. The new one didn't work either, so I started sleuthing. It turns out ...
Buckeye1887's user avatar
0 votes
2 answers
64 views

Why one outlet on a branch suddenly shows lower voltage?

I have a branch with few outlets and ligths on it, and one outlet developed a problem overnight, in the sense that whatever was plugged into it was energized last night, but was not in the morning. ...
mustaccio's user avatar
  • 365
0 votes
0 answers
61 views

Why is my light still on when the dimmer switch is off?

I recently replaced my chandelier with a new fixture (and new bulbs) and noticed that when my dimmer is off the light is still on. Dim but on. I measured 10V between Load and ground. If I remove the ...
wizlog's user avatar
  • 190
0 votes
0 answers
36 views

All circuits show low voltage / lights flickering

Problem started two weeks ago and was first noticed when our microwave sounded very low-power. Later, a power tool was used in the home and it blew a surge protector on a different circuit. Three ...
Ben Bethel's user avatar
0 votes
2 answers
83 views

Voltage Drop On a Circuit, How Much is Too Much?

I bought a UL-listed electric fireplace a couple years ago and I'm still trying to confirm everything is normal and safe in the winter. This is a 1500 W (12.5 A) cord and plug appliance running on a ...
Robert Chapin's user avatar
5 votes
3 answers
1k views

220v Washer Dryer Machine Voltage Tolerance

I moved to an old apartment where the energy output is, in practice, between 130v and 140v (should be 127v max in an ideal world), and I have a 220v (not 240v) washing machine which was intended to be ...
Pedro V. G.'s user avatar
0 votes
1 answer
72 views

Replacing wires in Room from the 1980's

I have a couple questions on my rewire / remodel I am doing. I rewired a ceiling with LED potlights. I used 12/2 Romex. I just noticed for some reason the room is running on 20Amp breakers. Is ...
Jeff Oldham's user avatar
1 vote
1 answer
98 views

ceiling fan on after shutting off power [closed]

Trying to remove a ceiling fan upstairs. I shut off the breakers for upstairs, and everything turned off - except the ceiling fan is still running. None of the rooms upstairs have power. How is the ...
kerryanne's user avatar
0 votes
2 answers
143 views

Electrical outlet is not outputting nearly enough voltage

So I've been dealing with a faulty outlet for the last week now, and have done some debugging steps but am a bit lost on where to check next. I first attempted to replace the outlet but then found ...
Daniel's user avatar
  • 1
0 votes
1 answer
170 views

Why Surge Protection Device (SDP) fails and how to deal with that [closed]

The power surge from the electrical line has taken out electrical appliances from many houses not sure if it's a power sub station fault or primary lightning strike on power pole. But some of the ...
CuriousMan's user avatar
0 votes
0 answers
69 views

How to stop TubeLight from flicking when the water heater is turned on

Please find the video here. Whenever I turn on the water hater (tanked AO Smith HSE-VAS-X-015 Storage 15 Litre Vertical Water Heater (Geyser)), the tube light flickers. I'd like to stop that. Should I ...
King's user avatar
  • 117
0 votes
2 answers
95 views

Voltage meter from power conditioner in home showing crazy jumps and inconsistency

I’m having this issue with here I can't get a stable voltage reading coming out of any outlet in a particular room. I have a furman m-8dx power conditioner with a voltage meter that jumps anywhere ...
user174499's user avatar
-1 votes
1 answer
91 views

Why did my water stop getting hot and my stove doesn't do anything

Cold water coming from the hot water heater. Changed the bottom heating elament that was bad and let the tank refill. Turned power back on and waited an hour, turned the water on to see if it was ...
Please help's user avatar
0 votes
1 answer
224 views

One leg is 90v the other 140v

When under load I’m getting 90v on one leg and 140v on the other Al thought it varies. If I turn everything off I get 120v on each phase to neutral. I think it’s the power company side, but they came ...
Ndevir's user avatar
  • 1
2 votes
3 answers
297 views

Daisy Chain Subpanels or Not?

I’m trying to run power to a well pump house/seed starting shed now, while also planning for a barn/shop several years in the future. I am wondering if I should have two separate circuits (a lot more ...
cjc's user avatar
  • 101
0 votes
1 answer
265 views

I am getting 120 volts when checking the hot and neutral on the outlet but when I check the hot and ground I’m only getting 80 volts? [closed]

I am getting 120 volts when checking the hot and neutral but only 80 volts when checking the hot to ground?
user170188's user avatar
0 votes
0 answers
68 views

Trouble identifying hot and neutral in old house (no ground?)

I am replacing a ceiling fan and did not note how it was previously wired before taking it down (i.e. which are the hot and neutral wire). The house is quite old (some parts over 100 years - including ...
Chris's user avatar
  • 1
0 votes
2 answers
484 views

Can I plug a 240v halogen light bulb into a 120v lamp?

I’m trying to buy replacement bulbs for my halogen lamps. The lamps say “Maximum Wattage 100W”, but they say nothing of voltage. The bulbs that came with my lamps say “120V 100W”. I’m in the United ...
2540625's user avatar
  • 101
0 votes
2 answers
131 views

220V Induction Heater Electrical Connection

I'm hoping to get an induction heater for my condo, but the heater requires 1 hot, 1 neutral, and 1 ground. I believe that's a European electrical setup, so how would this get connected in the United ...
Richsticks's user avatar
0 votes
2 answers
347 views

How to voltage test GU10 a bulb socket

I have a GU10 light socket that is flickering. I bought a LED compatible outlet, quality LED dimmable bulbs (and have tried a few different ones). I suspect that the voltage is fluctuating because ...
OhMyDIY's user avatar
0 votes
2 answers
621 views

Is it OK to mix wire gauges when trying to reduce voltage drop over long lines?

I'm planning out an off-grid electrical system in which I'll have electricity going to an outbuilding from the inverter. The total distance one-way is around 200 feet. I'm concerned about voltage drop....
diy_builder_470's user avatar
7 votes
4 answers
1k views

What is the best way to wire for 120 volt & 240 volt remote power on a saltwater dock that is located 800 feet from the house main panel?

I have a saltwater dock that extends 625 feet from shoreline with an elevated junction box at the dock entrance, which is located an additional 175 feet from the dock entrance to the main panel of my ...
RM Carolina's user avatar
2 votes
3 answers
716 views

How can I determine the voltage requirements of an appliance?

I am moving from the USA to Japan and I really want to take my espresso machine with me. Japan runs on a lower voltage (Japan's voltage is 100 V and the frequency is 50-60 Hz). I have attached a ...
killrkitten's user avatar
2 votes
1 answer
179 views

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

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 ...
Kelvin Galiny's user avatar
0 votes
1 answer
88 views

Different output levels depending on input voltage / amps

I have some PA speakers that display two different fuse levels on the input label depending on the input voltage: Am I right in thinking you multiply the amps by the voltage for the fuses to get the ...
nutman's user avatar
  • 195
0 votes
2 answers
49 views

Replacing on/off switch in 1960/70's (ish) metal gooseneck lamp (U.K.)

I'm in england - the uk?* I'm not sure if I should post this here, it is hardly electrical engineering, but I'm not sure where else to put it. The switch on my bedside lamp has died. I've taken it ...
user avatar
5 votes
4 answers
2k views

Should the voltage of L1/N and L2/N sum to the same voltage as L1/L2?

I have a smart meter that is complaining the voltage is too high. When I use my AC volt meter on the two lines, I get 229. But when I do just L1 to N or L2 to N i get 129 and 131. I thought the ...
DAB's user avatar
  • 183
1 vote
1 answer
481 views

What is voltage supposed to be on a typical light circuit?

I have the same circuit shown here in my house minus any ground wires. I was doing renovations and had the ceiling fixture removed. When I was going to reinstall the ceiling fixture I made sure the ...
Rich's user avatar
  • 11
0 votes
1 answer
182 views

Voltage increases in one outlet when stove is turned on

Wife got a new monitor for her laptop and she started noticing that when the burner in the gas stove is turned on, her monitor goes dark for 1-2 seconds. The same happens when the burner is turned off....
ManFromCT's user avatar
1 vote
2 answers
396 views

Neutral line has 2.3v

I have a RV and I plugged into shore power for the first time the other day and noticed the plug has a test light that says if the wiring is good. It lit up saying my N and L were reversed. I checked ...
rasmukri's user avatar
  • 347
1 vote
4 answers
922 views

10/3 uf cable for 30 amp circuit

I have a 10/3 UF cable running to my greenhouse, but I am not sure of the exact distance it runs underground. I want to add an electric heater and would like to use a 30 amp circuit but my only ...
Mbbom's user avatar
  • 11
0 votes
1 answer
843 views

What causes sometimes low voltage & sometimes high voltage on different circuits in my house? And I have to run 2 space heaters for either to work [duplicate]

I’ve had issues with flickering lights for a while & over the summer we added a window unit to my sons room & you could barely tell it was running. I used my meter to check several outlets ...
Eric Alexander's user avatar
2 votes
4 answers
4k views

Is there a maximum wattage lightbulb I can use on ceiling lights or floor lamp lights?

I'm trying to create some brighter lights in my home to deal with the effects of the winter and I'd just like to check whether there any dangers or limits on using extremely powerful bulbs. In ...
Emile Paffard-Wray's user avatar
1 vote
2 answers
859 views

Can severe voltage drops in the house cause damage to wiring and electronics/appliances?

For the past three months we had voltage drops in the house and eventually found out that negligence of the power company caused it. It was finally fixed, but my question is, should I or an ...
Rodster's user avatar
  • 51
0 votes
1 answer
426 views

Safe voltage from Line to Ground 220V AC single phase?

[[ CORRECTION: L-N should be N-G or N-E. My mistake. ]] I live on the ground floor of an apartment building in India. Standard Indian wall voltage is 220V AC. I'm about 5 meters from the circuit ...
Advait's user avatar
  • 103
0 votes
1 answer
73 views

Three phase to single phase: Voltages unbalanced [closed]

At work and our regular electrician is off. It could wait if necessary but I'd like to see if it's a simple fix. When our building was constructed 50 years ago, apparently it had a 460V 3-phase pool ...
ehbowen's user avatar
  • 429
0 votes
1 answer
325 views

Wire to Receptacle Only Shows 1.9V

Went to use the garbage disposal yesterday and it didn't work. At first I thought it might have tripped its internal fuse, but no dice—I pushed the button on the bottom with no effect. Then I ...
Huesmann's user avatar
  • 3,680
4 votes
3 answers
3k views

Is it possible to convert a (US) 240V 20A outlet into a single 120V 20A outlet using an adapter cable?

The adapter shown in the picture is described by the seller as "4-Prong 220V 14-50p Outlet Plug to 120V 5-20R/15R Female Adapter Power Cord for 20V [sic] 15/20Amp Household W/Breaker". What ...
mr blint's user avatar
  • 1,870
0 votes
2 answers
203 views

Is it safe to use a 2 Amp capacity voltage stabilizer with a refrigerator compressor LRA of 8.1 Amp?

Background: Recently, one of my refrigerator got damaged due to frequent voltage fluctuations, despite having in-built voltage stabilizer claimed to be installed by the manufacturer. So, I intend to ...
Jagjeet Sharma's user avatar
2 votes
1 answer
1k views

Broken outlets: 110v between hot and ground, 110v between neutral and ground, but ~3v between hot and neutral, why?

So a few outlets on the same circuit suddenly stopped working yesterday, and we suspect that's due to a bad receptacle which is on the outside of the wall. We opened it up, and tried to replace the ...
Santu's user avatar
  • 23
-1 votes
1 answer
56 views

What should be the core size, SWG #, # of turns for 100VA isolation transformer to run 100 watts bulb at .5 amps & 230 volts? [closed]

I am a certified computer programmer, but not an electrician, after researching on google, youtube, reading few books and referring to some local technicians, I made a transformer on toroidal core ...
Yogie's user avatar
  • 99
2 votes
1 answer
187 views

Small voltage reading between Spa water and earth ground

I've noticed a strange voltage reading between the water in my spa and natural earth ground. The reading varies between .35VAC and .7VAC. My wife noticed a small shock from the water after inserting ...
G237's user avatar
  • 21
1 vote
1 answer
298 views

Loss of voltage when connecting an outdoor light fixture

I am stuck. I have an outdoor light post. A wire to the post was cut and was replaced. At the post, I have 120 volts off of the wire. When I connect the light fixture I am only getting 48 volts. ...
Cliff's user avatar
  • 13
2 votes
2 answers
2k views

One leg voltage loss to sub panel

I have a sub panel about 200’ from my main that is fed by MHF buried, not in conduit. The sub panel just runs my well pump at 220v 10a and a 120v outlet. Everything worked fine for a month and then ...
John's user avatar
  • 21