Questions tagged [voltage]
The voltage tag has no usage guidance.
134
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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 ...
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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 ...
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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 ...
user1224642
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Configuring 72 V electric boat with 12 V step-downs? [closed]
I've replaced my boat's diesel engine with a 72 V electric motor and a 100 Ah, 72 V LiFePO4 battery. I want to get rid of the "house" batteries, which are two lead-acid marine batteries ...
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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 ...
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What is voltage supposed to be in this diagram
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 ...
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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....
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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. ...
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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 ...
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Can I use a lower voltage power supply to power a router? [closed]
Devices in question:
Power supply: 5V 2A USB charger with 2 ports
Router: 10V 1A
Modem: 10V 0.5A
I'm trying to decrease the volume of cables and I'm pondering about removing my router and modem's ...
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Extending 20AWG of Ikea VAXMYRA, What to look out for
I am looking to extend the current wire of Ikea VAXMYRA led light. From the wire there's printing of AWM 2468 20AWG 80oC 300V. Can I literally just purchase another 20 AWG cable and splice it? Please ...
RobertLow
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118
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Lava lamp UK to Canada
I've recently buy a lava lamp and it only works for EU, all of it is 220-240V. First I've buy the plug adapter (not converter for V) the light bulb is 240V R39 E14 30W, and it doesn't exist in 120V, ...
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Why does 120V line measure 26V?
The red wire has fed to fluorescent lights / LEDs for decades with 120V. When the circuit breaker is open it reads 6V, breaker closed is 26V AC (Fluke DVM) between the red and white wire: no load ...
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What could be causing the voltage drop in light sockets of my bedroom
I have a single circuit breaker for all lighting circuits in my apartment unit. However I'm having severe voltage drop in my bedroom's light sockets. I started suspecting about it ever since the ...
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Can I replace a 115 V doorbell transformer with a 120 V doorbell transformer?
update I replaced the transformer and 1 single doorbell with the ring video doorbell wired. Everything is functioning as it should. The existing chime from the standard doorbell is slightly louder ...
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How do I troubleshoot lost voltage in a previously working connection? [duplicate]
I have a garbage disposal that was direct connected to a 15A breaker and working fine. I needed to share that line with a new dishwasher install so I tried to install an outlet.
I disconnected the ...
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7A 125v fridge into a 15A 125v outlet?
My outlet reads 15A 125V, I bought a fridge with a plug that reads 7A 125V, and IH range who's plug reads 15A 100V. Is it safe to use these items?
I bought both an IH range and a fridge that said they ...
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Why is there voltage between the hot and traveler or other wires when all switches and fixtures are disconnected?
This is happening to me in a US residence. I’m replacing two light fixtures and both switches. One light has a 3-way switch, the other just a single-pole switch. See crude wiring diagram.
For the ...
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Voltage drop between hot wire and switch return
In my bathroom I have one single pole switch for light and one for a fan. When I turn on just the light all 4 LED bulbs are dimmed. Then if I turn on fan or light in a room which is on the same line, ...
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Is clamp meter misreading or am I using it incorrectly?
I just bought an Ideal 61-737 Clamp Meter from Lowes and watched several instructional videos on how to use it.
I'm interested in using the Non-Contact Voltage (NCV) feature which allows me to touch ...
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702
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How do I test voltage without a ground/confirm a good circuit?
For context, I recently moved (into a very old home) and I have a series of recessed lights operating on a single switch. All but one light fine... what I assume is the last in the series does not. ...
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Surge Arrester/Surge Protection Device (SPD) Type 2 Installation and its external Short Circuit Protection Device
BACKGROUND
I live in a small town where it is difficult to find certified electricians. In fact, electrician certification is not common for residential installations. I did find some experienced ...
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Fan Motor stopped working, but motor is fine. Low voltage measured
Had to replace a broan ceiling fan, roughly 6 months ago. The new fan sounded odd, but I didn't want to buy another fan, figured I would wait until it failed again. After 6 months, it failed again. ...
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Half of house power voltage drops during storms
Very recently, about half my house’s power outlets drops in voltage during storms. Each time it’s the same circuits that are losing power, upstairs bed and bath, downstairs router, and a couple other ...
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Why am I reading 120V in junction box but 100V four inches away downstream at screw-in bulb
Just moved into a house. External sconce light wasn't working. I swapped it out for another bulb rated 110/120V. The light flashes on and off repeatedly.
I removed the bulb and put my multimeter leads ...
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All wires in thermostat junction box have high voltage
I'm a new homeowner and I'm trying to improve the heating in my new place!
The heating is done with baseboards and it is currently using th104plus thermostats. My goal is to replace it with Mysa!
In ...
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When running a bigger wire to deal with voltage drop on a 240V circuit, do I now need to run a neutral as well?
I am running wire for a 240 V, 20 A split-system AC over a hundred feet and the voltage drops below the allowed NEC 5% voltage drop.
So I have to step down the a wire a gauge and run a #10 wire which ...
Samuel Lee
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Can I replace a bulb with one with more watt?
I have a lamp (from IKEA) that had a light bulb 3W 200lm 67lm/W 26mA
I bought a light bulb that says 4W=35W 230LM
Can I replace with that light bulb or even with higher watt? I mean is the only ...
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Lights go dim with a moderate load imposed: how to troubleshoot?
I just bought a house built in 1964 which features switches and outlets that have the "strip wire and insert into hole" connection method. In one of the rooms, turning on a ~500 watt load ...
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Why do I measure high and low voltage on a shop panel circuit?
I have power running to my shop, shop panel has a 100 amp main breaker, voltage on one leg reads 109 volts. The other shows less than 100 volts. If I turn 1 20 amp breaker on in the panel I then read ...
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How to determine if a light bulb is compatible with a lamp?
All my life I was laboring under the misconception that if a bulb fits in a socket, it will also work well.
Recently, a line lamp in our bathroom stopped working, so I bought a brand new LED line lamp ...
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Why does non-contact voltage tester chirp when it touches my skin?
I am getting a voltage tester (70v-1000 vac) go off (chirps once) when it touches my arm. If I move it up and down my arm it will chirp every few inches. Is this normal? And no, I'm not sitting in an ...
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How to protect electric appliances from high or low voltage or short circuit or any other electricity related thing
I have so many electric appliances installed at my home(India). I have been recently reading in newspapers that some electric appliance are getting affected due to voltage or short circuit issues.
I ...
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What is this wire in switch for?
So I’m working on an arduino project for switching my light with it, but in my switch, there are 2 cables (if I count in/out as one) and I don’t know what the second is. When I meassure voltage ...
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Strange Voltage at Receptacle
One of my home's 120v circuits measures:
Line to neutral = 120v
Line to ground = 52v
Ground to neutral = 45v
What should I look for to resolve this issue?
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Is it possible to downconvert 30A/240V to 15A/110V by replacing a circuit breaker?
I recently moved into a new apartment with... "curious" wiring. There is a single 15 amp/110 volt outlet that is directly wired to a 30 amp / 240v breaker. I suspect there used to be a drier ...
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Voltage between neutral line and soil?
I am feeling unpleasant electric shock when I touch metal water pipes or faucets.
This happens also when the main breaker is off (L1, L2 and L3). This rules out my appliances (hot water boiler and etc....
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