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.

2
votes
2answers
104 views

Can I feed a sub panel off my 200A service box? Or would I need to run wire from the inside breaker box?

Can I add a sub panel feed off my 200A service box? If so what are the requirements? Or would I need to run it from the main house breaker inside the house and wire from there? I currently have a ...
9
votes
4answers
4k views

Confusion over 220 and 230 volt outlets

We have a 220 outlet for our A/C. We are shopping for a new unit and all I am see is 230 volts on the units. Will we have to rewire with a new outlet for a new A/C?
1
vote
0answers
35 views

Dedicated 240v 30A Circuit Switched for A/C and NEMA 14-30

I have a dedicated 240 volt circuit that's hard wired into my air conditioning unit. The circuit has a 30 amp breaker at the main box and another 30 amp breaker on the wall next to my air conditioner....
1
vote
2answers
73 views

Can I connect an LED light fixture to a 240 volt oulet?

My question: I'm replacing a metal halide fixture with a LED fixture. The outlet is single phase 240V (split with no neutral). Is it ok to connect the LED fixture to this outlet? I'm asking because ...
0
votes
2answers
60 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 ...
2
votes
2answers
54 views

Understanding the wiring of 2-Pole Quad Circuit Breakers

I only want to understand the concept, so you dont have to address if my panel accepts tandem breakers or a certain brand of breakers. I will also omit any reference to ground wires for clarity. I ...
3
votes
2answers
43 views

Need help understanding amperage ratings for panels and sub panels

Im trying to understand the concept of amperage ratings for panels, and sub panels, but I'm not sure I have it figured out, sorry for any novice terminology. I'm in America. Grounds omitted for ...
2
votes
1answer
2k views

Use 6-30 plug on 14-50 outlet

I am planning to install a NEMA 14-50 outlet in my garage on a 40A breaker (Romex 8/3 cable from breaker to outlet) for use with an electric car charger. The charger will charge my wife's car in the ...
2
votes
4answers
78 views

Can I plug my new LG-LW2217IVSM A/C nema 6-15P into a 6-20R with a 20A-240V CB?

The user manual says to use a nema 6-15R with a 15A two pole Circuit breaker(240V). But my existing setup is a nema 6-20R with a 20A two pole CB(240V). I realize a 6-15P plug will fit into a 6-20R ...
4
votes
3answers
2k views

3 prong range outlet

I wired a 3 prong range outlet using 8/2 wire. I had a black insulated, white insulated, and a bare single strand copper wire. In the outlet I wired the black wire to one hot side and the white wire ...
6
votes
2answers
941 views

Swapping L15-30 with L21-30

I have some plugs in my warehouse that have L15-30 receptacles. Inside the boxes are four wires: Orange, Black, Red, and Green. I would like to swap one to an L21-30 receptacle. It looks like the main ...
0
votes
1answer
49 views

What is causing the remote not to work properly when the light is connected up to the ceiling fan?

I installed a 220v DC ceiling fan. Prior to installing the LED light, I tested to ensure the fan motor worked with the remote control and it did at all speeds. I hooked up the LED light as specified ...
0
votes
5answers
19k views

240 volt house wiring, 130 volts on one leg and 112 volts on the other?

In my folks old farm house, at the panels main input from outside. L1 is 130v. L2 is 112v. When a load is applied both legs down voltage, allot! Anywhere from 10 to 20v. The wires running from the ...
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... ...
1
vote
1answer
66 views

What's wrong with my replacement fan motor?

I have one of those integrated bathroom 3-in-1 ceiling units (light, heat and exhaust fan). Recently the fan spontaneously stopped working. I took the unit down to inspect the fan motor and took it ...
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 ...
0
votes
1answer
61 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
55 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 ...
2
votes
3answers
112 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 ...
1
vote
1answer
161 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 ...
0
votes
1answer
106 views

Switch a condenser dryer from drawer to pipe

How does one switch a condenser (ventless) dryer such as the Electrolux edc78550w from collecting the water in the drawer to pushing it through the back pipe?
0
votes
1answer
103 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 ...
0
votes
1answer
18 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
41 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
339 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 ...
10
votes
2answers
123k views

What's the difference between three phase 240 V and standard household 240 V?

I don't understand the difference between household 240 and 3 phase 240. Isn't household 240 just two 120 phases, making 240V two-phase? If so, wouldn't three phase just be 360v? How, then, is there ...
2
votes
2answers
13k views

Size of circuit breakers for 220v circuit

I'm considering a piece of shop equipment with a motor that can be wired as 110-volt (20-amp) or 220-volt (10-amp). I'm leaning towards 220v despite the additional cost of installing the electrical ...
2
votes
1answer
669 views

Can I split a 120v outlet off a 240v air conditioner circuit?

I have a 30amp 240v line running to my central A/C unit. And I want to install an 20 amp 120v outlet next to it to run an air compressor unit. Is this possible and how is done?
0
votes
1answer
99 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
30 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
49 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
125 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
41 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
2answers
88 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
286 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
109 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
650 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
35 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
99 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
72 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
149 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 ...
1
vote
1answer
10k views

Adding GFCI to a 220v outlet

First off, please excuse my clunky use of electrical language. I'm not exactly sure what I'm talking about. I recently added a 220v/30amp outlet to my garage for the purpose of an electric ...
0
votes
4answers
6k views

Can i fix or run my 110V pedestal fan on 220V?

I have an old table-fan that I bought years ago and was rated for 110V. During the checkout process, it the option of choosing 110V or 220V and I made the mistake of choosing 110V. I haven't been able ...
0
votes
2answers
273 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 ...
0
votes
3answers
81 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
81 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
1k 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
105 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. ...