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Questions tagged [240v]

For questions dealing with 240 Volt electrical circuits, devices, and equipment.

9
votes
4answers
2k views

Is it safe to use two single-pole breakers for a 240 V circuit?

I recently had an electrician come out and replace my electric panel. He seemed very knowledgeable and overall appears to have done a good job, even went through and labelled most of the panel... ...
0
votes
1answer
57 views

Running 40ft of wire to garage, buriable

I'm running the wire to my garage. Wanting to run a 220 air compressor And couple 110 outlets and lights. Is it possible to run 10/3 or do I need Like 10/4. For that extra hot. I'm running from ...
1
vote
1answer
49 views

Extend radial circuit with new socket - diagram

Similar to this question (Can I use Wago connectors to extend a ring main?) I am planning on using Wago connectors & boxes to add a new socket, however I don't know if my circuit is a ring main ...
1
vote
1answer
68 views

220V GFCI circuit breaker neutral

I have a 220V 15 amp body dryer with 2 prongs on the plug (European). Manufacturer instructions indicate to connect 2 hots and 1 ground to the receptacle. Since this is in a bathroom, I have installed ...
2
votes
3answers
103 views

Wiring solution for 240V EV charging outlet in garage with long run to breaker box

I am trying to come up with a wiring solution for a NEMA 14-50 240V outlet in the garage for an EV. Specifics of my situation: Max charging current will be 32A, so I need #8 wire. Breaker box is on ...
0
votes
1answer
16 views

HOT FEED ONLY 240v Thermostat

I have 2 electric 240v baseboard heaters w a single pole thermostat fed by a single 12/2 cable always hot. Purchased Honeywell double pole mechanical replacement - do I need to run another 12/2 or ...
0
votes
0answers
36 views

Dryer only getting 120v

There is something wrong with my dryer/electrical and I just can't figure out what it is. Is this a dryer issue or an electrical issue? I just need to know who I should call to fix it. I did all I'm ...
2
votes
1answer
143 views

Running 240v power to detached garage for electric vehicle

We have a detached garage approx 95ft away from the main house and we are looking to run a 240v circuit there. Currently we have Romex wire running straight into the ground. (This is how it was when ...
0
votes
1answer
76 views

Adding Ground Wire to Existing NEMA 10-30 socket

I have a question about changing my 10-30 wall outlet to 14-30 for charging my EV. I thought it was a simple trip to Home Depot but it seems I may be not code compliant. I bought a Level 2, 20 amp ...
0
votes
0answers
29 views

240 volt outlet is not delivering full 240 after electricity went off

Our electricity popped off, smelled metallic. Now 240v outlet registering less power. Dryer only beeps and does not run.
0
votes
1answer
38 views

Dangers of connecting Neutral to case of blower?

(Not an Electrician) I have a 220V air handler (not part of the HVAC system its for a homemade wind tunnel) that I need to get power to. There is an old dryer receptacle (10-30R) in the basement that ...
1
vote
2answers
81 views

Wrong voltages on underground cable

Asking for a friend who's not too big on the internet... ;-) Background: On a farm. 1000' underground three wire power run to a well. Buried about 3 feet down. There is about 200' of three black ...
0
votes
2answers
48 views

Line-to-Line Voltage Reads 0V (or low, 15V at most) on Primary of Main Breaker (L-N both read ~120V)

My neighbor has a hot water tank that quit working earlier this week. I checked the breaker - looked good. I measured the voltage at the hot water tank; it read ~15Vac. I checked the double breaker ...
2
votes
2answers
71 views

If my heat pump does not have a neutral, do I still need a neutral wire?

I had a friend wire 10-3 line for a new heat pump. He connected the red and black conductor wires in the house to the 2-pole 60 amp breaker and the neutral white to the neutral bus bar. The outdoor ...
0
votes
0answers
39 views

20 year old GenTran Switch Totally Dead

Just picked up a new generator after 23 years using the same one. Had to change over the three prong 220v plug in with a 220v twist plug. Been over a year since using backup power. Plugged in the ...
0
votes
1answer
44 views

Does anyone know how to split the 240 V wire components of a dryer from the 120 V?

We are living on an island where the electrical grid is already 240V. We shipped a US dryer here and are trying to figure out how to wire it properly (me and local electricians). From my research ...
0
votes
2answers
85 views

60Hz to 50Hz Conversion

I need to convert 220V 60HZ to 220/230V 50hz for use in a consumer Super Automatic Espresso Coffee machine, 1,400 watts. I assume running it at 50Hz is possible, it's an expensive machine so wish to ...
0
votes
3answers
198 views

How to wire multiple 240V, 20A electrical baseboard heaters

I have two baseboard heaters to install on a 240V, 20A circuit. One heater is 1500w and the other is 2000w. From my panel, I leave the 20A breaker with 12/2 wire to reach the first baseboard. ...
1
vote
1answer
108 views

Is it safe to connect two extension cords to reach 75 feet to a generator?

For my generator? It's a duromax xp4850eh with one of those 240v L14-30 outlets. The inlet is about 75 feet away from where I want the generator to sit outside. Because of voltage drop concerns, I ...
0
votes
2answers
397 views

Correct wiring of 4-wire cooktop to 3-wire 240V supply

I have a new cooktop with 4 wires (see pic) - black, red, white and bare. The 240V supply cable has black, white and bare. I measured ~250V across the supply black & white (no load). The ...
0
votes
0answers
30 views

CO, USA - Code Violation for Switch or Subpanel to Power AC & Humidifier?

My mechanical closet is on the third floor of our townhouse and our breaker panel is on the first. To install a steam humidifier, I’ll have to run a 220 line between two floors or outside, both of ...
1
vote
1answer
96 views

Is this 240V outlet undersized?

Garage has 100A service sub-panel from main home. The panel contains a 40A 240V breaker. This connects through a heavy-gauge wire (looks to be same wire as feeding the 100A panel itself) to what I ...
0
votes
1answer
67 views

Wire nut tie together for a #4 braided aluminum wire?

I have an electrician running a 220 line out to my shed, using 4-4-6 braided aluminum run underground. The wire is about 3 feet too short (after running about 150 feet). He wants to just use 3 wire ...
0
votes
1answer
128 views

Powering 220V-to-neutral appliance from 120V split-phase?

I have a 5kW appliance that normally accepts 3-phase power, but can also run on 220V. The manufacturer indicates that when running on single-phase 220V, to connect 220V hot to all three input phases ...
0
votes
3answers
70 views

Exposing a 220v socket in my condo

I live in the US and own a few appliances (mostly audio) that are European, designed for 220V and don't have a built-in converter to deal with 110V. I'd like to find a way to use these in my condo, ...
1
vote
0answers
73 views

Why is one leg of my dryer circuit dead?

This last weekend I was working outside when the lights went out from a tripped breaker. A house guest was running a blow dryer and personal heater in the bathroom and the house is much older so given ...
4
votes
2answers
910 views

Wiring a 220 outlet- can I use a 15 amp outlet with my 20 amp breaker? Or should I get a replacement 15 amp breaker?

I'm trying to wire an outlet for my lathe. The manufacturer recommends a 15 amp breaker. I am planning to run 10 gauge wire approximately 25' to the outlet where I can plug in my lathe. The motor is ...
0
votes
5answers
98 views

Weird smell from electrical disconnect box when appliance is on

I have a 240v, 48amp (60 amp breaker, 6 awg NM-B wire) car charger outside that has a disconnect inline and last night I noticed a really weird smell in the room the wires to out to the charger from. ...
2
votes
2answers
63 views

Converting 8/3 220VAC oven recptacle to 120V recptacle

Good day! We’re replacing an electric oven/range to a gas oven/range And Adding a 600CFM range hood. The old range is leaving an ungrounded 8/3 NM for me to work with. Now, lazy me wants to ...
0
votes
1answer
466 views

How can I convert a 220v lighting circuit to 110v?

My electrician wired a single bulb light fixture with 220vac instead of 110vac.There are two 110 vac wires and the Ground.How can i reduce this to 110vac at the fixture?
0
votes
2answers
225 views

Best way to get both 120V and 220V from existing multiwire branch circuit (MWBC)

I have a double pole 20A breaker feeding a 120V MWBC with 12/3 with ground, romex that goes up three levels to two separate 120V duplex GFCI receptacles with common neutral. I want to have both 120V ...
16
votes
4answers
5k views

240 V outlet is not delivering 240 V

I recently moved into an apartment with a 3-prong, NEMA 10-30 outlet. It looks like this: I bought an old dryer that I confirmed was working before purchasing it and hooked it up and unfortunately ...
1
vote
3answers
124 views

Does a GE TM3215CCU Accept GE Thin Breakers?

Hello, I am needing to install a 240V outlet for a welder in my home garage. Unfortunately, my home's breaker panel is full and I need to make room for a 30A 2-pole breaker for said welder. I have a ...
0
votes
1answer
81 views

how to get 240V to 4 wire 240V thermostat

I have a 2 pole circuit breaker in the panel with a 2/12 cable connected to it. Black wire is connected to one pole, white wire is connected to other pole and bare wire is connected to ground bar. ...
0
votes
2answers
88 views

What wire do I need when replacing with a higher gauge for a new cooktop?

I'm getting a new cooktop installed that requires 240V 50A wiring. The old cooktop only needed 40A so I need to replace the old 8/2 wiring with 6 AWG wiring and change out the breaker to a 50A breaker....
0
votes
1answer
94 views

Blue cable in 220v air conditioner plug & cord?

I'm looking to replace the plug on a window air conditioner unit that uses a 6-20 240v plug. However, in addition to the cord having two hots and ground, there's a small blue cable that I'm not sure ...
5
votes
2answers
651 views

Change from 240V to 120V

I did quite a bit of research including on this forum but wanted to double check if I got things right. On the outside of our home there is a standard electrical box (guessing about 3"x5") to install ...
0
votes
2answers
369 views

220v 30amp 4 Wire to 3 Wire Bandsaw

I just got a bandsaw with the 5hp motor that requires a 220v 30amp single phase connection. I have it up and running with a three wire dryer cable to my dryer receptacle. When researching requirements ...
1
vote
3answers
108 views

Electrical - 50A to 20A Adapter for heater?

I am currently in the process of remodeling my detached garage and have run into a snag with the electrical. The previous owner ran 6-2 wiring out to the garage into a 50A outlet but then pigtailed a ...
0
votes
1answer
802 views

Help: Wiring 220V in garage to NEMA 10-30r because MIG welder and air compressor have 10-30p

I've reviewed many articles on this website as they've been referred by my Google searches. But most have been about dryers. I have an older air compressor (240V, 60Hz, 15A, 5hp) and a MIG welder (...
0
votes
3answers
66 views

How to wire a USA 50amp 2 phase double pole breaker supply for a UK 240v high capacity shower pump

I have recently moved to the USA from Scotland. I brought with me a "Waterfall" 3 bar shower pump, operating on UK 240V, 50Hz A/C,rated at 4 A, 850W, IPX2. In our house we have a disused 50amp supply ...
0
votes
2answers
92 views

Two 20 amp circuit breakers installed with copper wire bridge

We hired an electrician to Power a steam humidifier and when I opened the electrical panel I was surprised to see two 20 amp circuit breakers next to each other with a copper wire through the on/off ...
0
votes
1answer
96 views

Adding New Breaker / Subpanel

I am installing a 240v ductless mini split. My breaker box is full, and I have a seperate ( hot water ) breaker in its own box on its own meter. I see two ways I can approach the situation: 1) Add a ...
1
vote
1answer
161 views

What Wire Should be Used for a 40A 240V Circuit?

Given a 240V 40A circuit is there an official wire type that should be used? I assume there is a building code standard for this somewhere, but I don't really know where to look. I'd love if I could ...
0
votes
1answer
52 views

Can I share a 220v circuit between an AC compressor and baseboard heat?

I will be adding a 220v baseboard heat as a supplement to an addition. The addition also has a smaller AC compressor with 20amp 240v, the same spec as the heater. I wonder if I should share this ...
0
votes
2answers
42 views

Connecting 240v 14-50R to multiple heaters in parallel

I have four infrared heaters that each draw 6.67 amps at 240v. Each heater has a red, black and green wire: more info (I have SW-24 single lamp model) I'm in the US and recently had a NEMA 14-50 ...
4
votes
2answers
410 views

Plugging compressor into 240v dryer plug (NEMA 10-30R)

I've recently received a compressor that has a NEMA 6-50P plug on it. I would like to plug it into my current dryer receptacle which is a NEMA 10-30R. Voltage and amperage-wise, I think everything ...
0
votes
1answer
48 views

Using a 4-wire machine with a 3-wire receptacle?

I've got 3 machines for my shop that are currently wired with a 12-3 4-wire NEMA 14-50 plug. Each machine uses only 15 amps at 240v, so how much power it uses is not a factor here with my question. My ...
0
votes
4answers
1k views

amps per leg on 220V?

IF the nomenclature plate on a piece of 220VAC equipment says 10.0 Amps, does that mean that the load is 10 amps per leg, or 10 amps total, therefore 5 per leg?
2
votes
2answers
363 views

How should I secure an unused wire in my breaker panel?

I accidentally pulled 6-4 wiring to a machine that only needs 240 and no neutral. What to do with the white wire? I read here that at the machine, I just cap the white wire. When I go to connect the ...