Questions tagged [240v]

For questions dealing with 240 volt electrical circuits, devices, and equipment. This tag covers the similar voltages as well (i.e. 220, 230, etc), since they generally refer to the same thing. Use with the [electrical] tag.

Filter by
Sorted by
Tagged with
7 votes
2 answers
1k views

Can I run wires from separate panels through the same conduit?

I own a duplex and the attached shed is divided in 1/2 for each side of the duplex. On the rear exterior are the 2 electrical panels, one for each side of the duplex. I was going to install hookups ...
tacomaguy20's user avatar
9 votes
3 answers
2k views

Is this 240v circuit to garage for electric charger good or did I miss something?

I'm adding a circuit to my garage for an EV charger. Yes, I have pulled a permit. I live in Massachusetts. Here's my plan: I'll be adding a new 60 amp GFCI breaker to the panel. Yes, there is space in ...
holmeski's user avatar
  • 193
-1 votes
1 answer
91 views

Wiring 6-50 Welding Outlet [closed]

A couple clarifying questions on my welder outlet install. Prior thread: 240v Welding Outlet Right Near Breaker Box One issue is that since I don't have any real NEC knowledge - it seems that every ...
Matt's user avatar
  • 19
1 vote
1 answer
163 views

How do I wire a 4-wire 220v cooktop to a 3 prong plug?

I just bought a new cooktop which comes with 4 exposed wires. It also comes with a diagram on how to configure it using a NEMA 10-50p type plug -- which is great because that matches the type of ...
Jason Anchía's user avatar
1 vote
3 answers
121 views

240v Welding Outlet Right Near Breaker Box [closed]

I have a garage where I want to install a 240V / 50A outlet. The garage is finished with drywall. I want to place the outlet adjacent to the outside breaker box (but inside). Questions: What wires ...
Matt's user avatar
  • 19
2 votes
1 answer
88 views

Need help adding 240V outlet to my residential garage

I am adding a 240V outlet to my garage, wired from directly outside the garage (12" from panel to outlet). I have a conveyor dryer unit for a small business I run from home. This unit has a 4 ...
user avatar
0 votes
0 answers
51 views

220v equipment in different areas of my home having intermittent issue

I live in united states. washer and dryer in laundry room in my home microwave and oven in the kitchen area has been turning off after 8-15 seconds of operation every now and then. oven displays bad ...
kc22's user avatar
  • 1
0 votes
2 answers
37 views

power point is turned off but usb charger led still flicks on

I have a 240v power point, the switch is turn off but a usb charger i have plugged in flashes about once every two minutes. Why would it flash if the power switch is off?
Bright spark's user avatar
0 votes
3 answers
104 views

Single pole relay on a 240VAC split phase circuit?

I'm installing an EV charger but my panel is only big enough to run either the dryer or the EV charger at the same time. So I have a current sensor on the dryer line so that when the dryer is running ...
Wise Shepherd's user avatar
10 votes
1 answer
2k views

Can I install and safely use a British 220V outlet on a US 220V split-phase circuit?

I have a British tea kettle I like very much. I have space in a subpanel in my kitchen for a 220V 15A circuit. If I purchased a British receptacle and wired it across the 2 hot wires, rather than the ...
bongo fury's user avatar
0 votes
1 answer
70 views

Installing a 220v breaker

I’m adding steam humidifiers to our two HVAC units, they currently run on 110v but will double the output on 220v which we need. I’ve pulled 8 gauge wire to the panel box and will terminate in a ...
Miffedone's user avatar
4 votes
2 answers
129 views

240V Four Prong Outlet - Inconsistent Behavior

An odd issue arose with my dryer outlet, and I am more concerned than initially. Below are the chain of events: Dryer: Samsung dryer spun, but did not heat Replaced heating element Plugged in, did ...
TomAder's user avatar
  • 41
0 votes
1 answer
75 views

For detached garage: buried cable or overhang? [closed]

I am a DIY guy, looking into bringing 240v into my detached garage. Will be running air compressor, welder. Will install a 100amp Subpanel. Should the cable coming from the house (main panel) to the ...
David E's user avatar
  • 103
2 votes
1 answer
111 views

Can I use a 120v load tester to test a 240v circuit by testing each hot wire separately using the ground wire as the neutral?

I have an old house and want to make sure that the wiring for all of the 240 baseboard heating units are still up for the job and not likely to overheat or have any conductance issues. No obvious ...
Mychael's user avatar
  • 21
0 votes
2 answers
256 views

How to run a 220v mini split on 110v wired home

I have an off grid apt in Baja California Mexico. The apt is wired for 110v. I would like to integrate an ac200max solar generator as well as a 550w dual dual generator. How can I integrate all of ...
O M G's user avatar
  • 9
0 votes
3 answers
80 views

120v AFCI breakers tripping due to lost 240v leg in same panel

I had a weird electrical problem and found the fix, but I'd love to understand the mechanism by which this happened. Disclaimer: I'm not an electrician, buyer beware, etc. The symptom I had was 3 ...
FixStuff's user avatar
1 vote
1 answer
166 views

Install Honeywell RLV4305A in box with 6 wires

I am trying to install the referenced thermostat for my baseboard heat in one room. I did follow along this post 2 wires, both hot, for 240v baseboard thermostat After color coding my wires that post ...
user111700's user avatar
1 vote
1 answer
162 views

Older 220V heater wire keeps burning out

I have an older 220V heater that came with the house I bought. It worked wonderfully for years, but then a wire burned out and each time I replace it, it burns out again within a week. The original ...
Kirk's user avatar
  • 11
1 vote
0 answers
73 views

How do I wire my 3-wire cook top where there used to be a 4-wire one?

I am changing out a 25-year old 240v cooktop with a new cook top. The old cooktop had 4 wires and the new one has 3. After the white and green, the junction box has 1 set of 2 purple wires that the ...
A Doc's user avatar
  • 11
0 votes
2 answers
195 views

Single phase induction stove push in quick connector difficult to connect

We had to change the current stove we had for and induction one (long story) which I also installed. With this new one, I have a 5 wire single phase setup. I think it is because each stove module ...
João Santos's user avatar
1 vote
2 answers
57 views

I want to use a thin gauge wire from a Nema 14-50 outlet [closed]

I have an RV and want to plug into the typical Nema 14-50 outlet found at campsites. However, I am never going to draw more than say 15amps. I would rather not have a heavy bulk cable that will never ...
John's user avatar
  • 9
0 votes
0 answers
39 views

240 volt patio heater on timer won't turn off

We had a 240V ceiling mounted patio heater installed 10 years ago and last year the timer switch started buzzing loudly when the heater was turned on. I swapped out the timer switch with what I ...
Andrew West's user avatar
1 vote
2 answers
253 views

Burnt 50A 3 prong range outlet: DIY replace, have professional do it or rewire to 4?

A couple of weeks we purchased a house built in 1981. First time we tried to cook something in the oven, we heard a loud pop from the wall, so I flipped the breaker and decided to take a look. What I ...
RebelWithoutAPulse's user avatar
-4 votes
2 answers
192 views

American commercial 240 volt microwave oven in American residence [closed]

There's been a few questions about using foreign 240 volt kitchen appliances, teakettles from UK seems to be a popular one, in the USA but I haven't seen any about domestic 240 volt appliances in the ...
MacGuffin's user avatar
  • 393
3 votes
2 answers
396 views

How to connect 3-wire cook top appliance to 4-wire junction box

How to connect 3-wire cook top appliance to 4-wire junction box. 3 wires from new cooktop are black, red & green....existing wires in box are bare ground, 2 black wires and 1 grey wire. So my ...
Chris's user avatar
  • 31
3 votes
1 answer
163 views

4-prong dryer outlet (NEMA 14-30R) with asymmetric hot to neutral readings (110v and 130v)

I recently renovated my home and re-did all the electrical from the service drop on down. Everything appears to be working correctly so far except one circuit. I have a NEMA 14-30R receptacle wired up ...
Brandon Weiss's user avatar
0 votes
2 answers
283 views

Wanting to split a 10/3 wire coming from a 30amp breaker

From my main electrical panel I have a 30 amp 240v breaker with 10 gauge wire running to a shed. What is the safest and most economical way to split that wire in the shed into two?
David Hahn's user avatar
4 votes
1 answer
1k views

How to wire 240v wall oven with only 3 wire (L1, N, PE)

Bought a house (in Canada) that came with a replacement wall oven. Getting ready to install and ran into a snag. There is only 3 wires (L1, N PE). Oven is an Electrolux EI24EW45LS 240v 60 Hz. Every ...
Sterling's user avatar
1 vote
1 answer
319 views

Is the wiring on this NEMA 10-50R incorrect?

While looking into EV charging I noticed I had a 240V receptacle (Leviton 10-50R) conveniently located right beneath my main panel. After some research (I have little to no electrical knowledge), I ...
user96104's user avatar
0 votes
1 answer
35 views

Confirm black hot white hot one double pole 20amp for well

I bought a home on a well. Several years later I am putting in a transfer switch for my gas gen. I have a good understanding of wiring and various wiring needs. Ok - my well is on a double 20amp with ...
Mike Clouthier's user avatar
0 votes
1 answer
354 views

Grounding stranded aluminum wire to junction box - 240v, for stove

I am attempting to replace a 110v outlet with a 240v outlet. This outlet is behind the stove in my kitchen. It was formerly powering a gas range, and this new outlet will be used for an electric range....
Dan Scott's user avatar
2 votes
1 answer
75 views

Can I upgrade NEMA10 to NEMA14 without replacing the NMC?

As noted previously, my stove is currently on a grandfathered hot-hot-neutral circuit. I really should replace that with one that includes safety ground. Currently (sorry) this is fed by an NMC cable ...
keshlam's user avatar
  • 28.6k
4 votes
1 answer
342 views

Dryer, laundry, bathroom in 3/4” flex FMC?

Can I have one 240V 30A circuit with 3x8AWG (clothes dryer) and two 20A circuits (washer and bathroom circuit, 120V with neutral each) together in one 3/4” flex SMC? I believe so but I haven’t found a ...
divB's user avatar
  • 1,201
0 votes
2 answers
684 views

Do I need to ground a new metal 240V outlet box?

I’m installing a 240v 50amp outlet directly off my service panel. I used a metal box, with 3/4” PVC conduit, and 6ga THHN wire. Do I need to ground the box in any way, and if I do, can I just run a ...
JAS's user avatar
  • 3
1 vote
1 answer
147 views

How does this controller board (and contactors) for Harvia Sauna Stoves regulate the kW that reaches the heating elements?

Is there anyone out there who can tell me how this circuit would in any way regulate the kW that make it to the stoves heating elements? Maybe it is that all regulation of the 240v 1pH dual pole ...
Scott M.'s user avatar
3 votes
2 answers
287 views

Can I use unused Neutral for ground on a 240V cooktop?

My cooktop has black, red and bare ground wires (brand new pre wired this way). Power supply has a neutral and no ground. Do I just leave it disconnected as shown? Is this connected correctly? Or ...
Whitestroke's user avatar
0 votes
1 answer
186 views

240v outlet leg b voltage drop under load

I have a 3 prong 240v outlet for a dryer that reads 240v across both legs and 120 across the ground. When I turn the dryer on and have the multi meter to the ground and a hot leg it shows 120 but if I ...
Brian's user avatar
  • 1
3 votes
1 answer
262 views

Multiple devices on same three phase circuit

I have a three phase, 30amp, 240 volt circuit that is feeding two three phase, 20amp welding receptacles. I would like to change out one of the receptacles to a 20 amp, 240 volt three wire receptacle (...
Taddy's user avatar
  • 31
0 votes
0 answers
57 views

UPS 30 AMP 240V question

Okay here is what I am trying to accomplish. I have a computer rack in my basement and since I am an IT guy to the extreme it has a lot of servers in it. I have a UPS 240V 6000KVA unit. It is rack ...
Charles in CT's user avatar
0 votes
1 answer
210 views

pool heat pump wiring instructions DOEL 19000btu, 5.56 kw, 220v single phase

I am trying in install Doel UHP056CS, name tag says 220 volts, however it comes with a pigtail already wired with a standard 110v male cord. Power Input label L, N, Ground, (three connectors) Water ...
jim craig's user avatar
4 votes
1 answer
376 views

Have I missed anything in my plan for a new 240v circuit?

I'm a beginner adding a 220V 40A circuit via exposed conduit for my new induction cooktop. Does this plan look reasonable? Under counter metal junction box grounded and mounted to back of cabinet. ...
sx64's user avatar
  • 43
9 votes
7 answers
7k views

Will installing European outlet in US change frequency to 50Hz?

I'm planning to buy a Siemens coffee machine from Europe. It uses 220-240V 50Hz. Previous models work just fine in USA using 240V outlet (my electrician was able to get it done, I bought leviton 5031-...
Anis's user avatar
  • 107
5 votes
4 answers
772 views

Using a countdown timer to control a 40A 240V contactor

It seems there are a couple ways to do this, but I haven't seen the exact solution I'm looking at so I wanted to check with the community on this. I have a 4KW patio heater I'd like to control with a ...
ABethea's user avatar
  • 51
2 votes
1 answer
243 views

Can I ground a detached garage to adjacent soil instead of connecting back to the panel?

I have a 50s house that has some 10/3 without ground for 240v/30a running to the garage. It's easier to run a ground wire to the outside of the garage and to the earth than it is back to the panel. Is ...
David's user avatar
  • 21
0 votes
1 answer
55 views

What type of sheathed wires to use for 240V without neutral?

I am looking at two different circuits 1) for an oven and 2) for a radiant heat system. Both 240V. The oven circuit requires a neutral, while radiant heat circuit does not. For the oven, I use a #6/3 ...
Max's user avatar
  • 641
0 votes
2 answers
297 views

Why dryers or oven have a neutral if 240V circuits do not require neutral? [duplicate]

I am looking at two different circuits for 1) an oven and 2) a radiant heat system. Both 240V. The oven circuit requires a neutral, while radiant heat circuit does not. Why oven or dryer circuit have ...
Max's user avatar
  • 641
7 votes
1 answer
1k views

How important is a grounded stove outlet?

Apologies if covered elsewhere... My place has the old-style three-prong 240V stove outlet, two phases plus neutral. This means the stove (recent, induction) doesn't have a safety ground. The closest ...
keshlam's user avatar
  • 28.6k
1 vote
4 answers
204 views

120V tap off 240V 30A water pump circuit

My well is powered by a 240V 30A circuit, the only circuit to the well house and the expansion tank and pressure switch. I want to winterize the lines in the well house with a heat tape, but the only ...
AKG's user avatar
  • 91
5 votes
1 answer
3k views

Floating neutral in 4-wire dryer outlet with 3 wires in?

So what do I do with this 3 wire cable into a 4-wire dryer outlet? I had put a 4-wire cord on the dryer and took off the ground-neutral link in the dryer, but it doesn't operate. (I'm guessing the ...
Dave X's user avatar
  • 418
1 vote
0 answers
51 views

Are there particular requirements for cabling or conduit use for outdoor lights in the UK?

I'm seeing a lot of conflicting information about outdoor wiring, whether conduits, steel armour, etc. are necessary. I assume this might be due to particular 'zones' as in bathrooms, but I can't find ...
OJFord's user avatar
  • 175

1
2 3 4 5
10