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.

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1answer
65 views

Electric Range Outlet wiring Upgrade from 3 wire to 4 wire

I need to wire a Range Receptacle in the USA for 4 wires currently 3 wires are run to the range ( a renovation is being done and the new range will be in a different location). I am not sure at the ...
6
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2answers
1k views

Using Only 3 out of 4 wires on 220 wire run

I have equipment that has 3 wires (red, black, green) The wire run from the breaker box is 10-3 (red, black, green, white) The equipment requires 220/240v. I'm just wondering if it's OK to leave the ...
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1answer
41 views

3-Wire Dryer Connection Works with Dryer at Home, But Not At Other House--socket tests ok though

This one is really odd... I have a 3 wire Samsung Dryer that was not turning on at my MIL's house -- but the outlet and the bare cord (I was super-careful) show 220 across the two hot legs. But when ...
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3answers
58 views

Daisy Chain 120V Disconnect Box from existing 240V box

I have an existing AC unit that hooks up to a 3 wire 240V 30amp disconnect box serviced by a 30 amp two pole breaker. I am adding a small 120V two wire mini split AC right next to it and I would like ...
2
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2answers
114 views

Moving 240v disconnect box

I have an outdoor 240v disconnect with 6awg cable (red/white/black/green) running from the main breaker to this disconnect box. There's a 110v GFCI-protected branch circuit that goes to some wall ...
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2answers
56 views

Can I replace a outlet dedicated 16A/240V with a 20A/125V outlet

can i replace 16A/240V outlet to 125V/20A outlet and it will work for 240V? israel outlet i want plug my pc and monitor + ups + isolator transformer on this outlet but its 120V/20A this is my ...
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2answers
99 views

If I split a 240v 30amp (has neutral) circuit into two 20amp 120v circuits, would that count as two 20-amp branch circuits to meet code?

I have an extra 240v 30amp outlet in my kitchen that was originally for my dryer. I know how I would be able to split it, but I am not sure if it would fulfill the code requirement: Countertop ...
1
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1answer
56 views

Will my plan work to temporarily power an irrigation pump?

Parents are rebuilding a house and we need to keep running the irrigation pump to keep the 2 acres of St. Augustine grass alive. The pump is 5HP single phase Starite DSeries DMG) and the manual says ...
2
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1answer
47 views

GEC and NM cable through same hole?

I'm replacing old 240v wiring in our home and the grounding electrode conductor was put through the same hole in the stud as the 240v cable was. I am not wanting to drill any more holes in the studs ...
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3answers
58 views

Grounded properly?

Hello all, I am adding a 240V outlet and am grounding the box. I would like to know if what I have done here will be okay upon inspection. Thank you, Ben
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2answers
52 views

CanI use existing 110v conduit for adding new 220v outlet in basement?

I live in the Chicago area. I'm adding a new 220v outlet to a corner of my basement (for a 3000W sauna heater). The basement is finished so putting in new conduit above the ceiling would be ...
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0answers
102 views

Are my calculations for stepping down from 240v to 208v correct?

I just bought a used UPS and didn't realize I bought 208v and not the 240v version. So I'm looking for a buck-boost transformer. Both input and output are at 30amps. I think I've done the math right. ...
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1answer
121 views

New Electric range trips GFCI when plugged in - 4 wire, bonding strap removed

I had an electrician install a 220v 40 amp circuit for a new electric range (Avanti DER20P3S) in the basement. The circuit is for a 4 wire (grounded) plug. I have wired the 4 wire plug to the range ...
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2answers
128 views

Advice on running power to a shed

I have a 200 amp service panel, and I calculate I am using about 160 amps. (I used a formula I found online that takes the square footage of the house and then adds from there) The new 160 sqft shed ...
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2answers
120 views

Proper way to ground a 240v metal outlet box?

I am replacing the circuit to our stove and am doing the rough in currently. We may one day want a stove requiring more amperage than our current 40 amps and so I am replacing with 6-3 w/ground. I ...
6
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1answer
448 views

Using 10/2 and/or 8/2 for a 240 only 3-prong

I have 2 dedicated circuits: 40 amp water heater 30 amp electric range Both have 2 hots and a neutral grounded at the panel. One runs through a junction box where the wires are connected and ...
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0answers
39 views

Can I use an adapter to plug a 4 prong dryer into a welder outlet?

I have a welder outlet in my garage that I’ll probably never use. I was wondering if I can use an adapter like this to connect a dryer with four prongs: https://www.amazon.com/dp/B07P93HF1P/ref=...
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1answer
61 views

Default an appliance to off (no power) when on generator power and on when on utility power

I'm planning a generator installation (Generac PowerPact 7.5kw) with an ATS with 8 circuits (i.e. Not whole house). I want 240v hot water to always be on when on utility power. When the ATS switches ...
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2answers
72 views

Code compliant way to hookup an electrical oven?

I’m doing a kitchen remodel. For the oven connection, the electrician ran #8 wire (two hot, one neutral, one ground) to the kitchen but didn’t put in an outlet. Additionally, the cord out of my Bosch ...
3
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1answer
60 views

Best way to add a 240v 30A circuit

I have a home pottery studio which has its own 100A sub panel, properly permitted and installed. There is one 240v 50A circuit that runs to the kiln room and powers a kiln. Plus a handful of other ...
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2answers
50 views

Connecting 3 wire cooktop to home 3 wire 240v

My house's 240v circuit for the cooktop is a /2 cable. (black, white and bare copper). The new whirlpool cooktop has a 3 wire connection (black,red and bare copper). Whirlpool's instructions do not ...
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3answers
1k views

When do I need a neutral on a 240V branch circuit?

I'm installing a 240V outlet in my shop to run a welder and I'm trying to understand when a neutral is needed and when it's not. The welder has a NEMA 6-50P plug, so I don't need to run a neutral ...
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3answers
79 views

Two 240 volt runs off same breaker

I have natural gas for all main appliances except for our AC system. However, there are breakers and outlets for all 240v appliances. They are unused and in the off position. Presumably if someone ...
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8answers
2k views

Do travel voltage transformers really not have grounding?

Example 220v-to-110v converter here. It seems like it accepts a 110V plug with grounding, and yet the converter itself only has a two-pronged plug (to a 240v outlet). Does this mean that plugging a ...
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3answers
645 views

What wire should I run to my garage for tools and a welder?

I will be running 240v to my garage to wire up an outlet. From the Panel in our basement to the plug location it is about 30M(~100ft) away. I am hoping to have an outlet in my garage that can service ...
3
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4answers
1k views

Should a 240 V dryer circuit show a current differential between legs?

I have a 240 V dryer which when measured with an ammeter has 24 A on one leg and 22.7 A on the other. If the ammeter is kept in place, one leg drops to 13 A, and the other leg drops to 4.5 A. Because ...
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3answers
80 views

What's the current input from each leg of a portable generator into my main panel?

I am connecting a portable generator to my electric sub-panel in my garage. My generator is a 6kw running watt unit with a 30amp 220 volt output. I will be using this connection (L14-30) to a box ...
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1answer
182 views

Oven heating element just blew (WOW!). Went & killed the breaker. Clock on range is still running. And is flipping me off

UPDATE - 03-15 Okay, so I (clearly) survived the night, along with many since, as I have awaited the backordered OEM part. It finally arrived. So today, I pulled it out the unit, and fully-unplugged/...
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2answers
136 views

How to safely wire this non-invasive solution as a smart three-way perilex switch for a heat recovery installation?

I have been wondering about a solution to this for long so I've decided to ask it here. I'm a programmer, not an electrician but I know how to properly solder things and generally how to work safely ...
3
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2answers
206 views

Electrical Help: Swap 50A Range for separate Cooktop & insert Oven (30A each)

House has a 50A, 3-line service to the old Range. Want to instead have a separate Cooktop and an insert Oven located below it for a sleeker more integrated look. Each have a 30A requirement. Can they ...
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0answers
41 views

Replace an electric baseboard heater safely?

Basement apt of a triplex with the original 1960's wiring on a 15 watt fuse. Question: How do I replace my old double pole 240v electric baseboard heater safely?
17
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3answers
4k views

240 V dryer outlet is reading 245 V

My 30 A dryer outlet reads 122 and 123 V on my multimeter (a total of 245 V). Will this be a problem for a new modern dryer if it is higher than 240 V? It is a three prong outlet.
2
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0answers
242 views

240v reading on a 120v outlet

I just got back from visiting the house I am moving into in two weeks. I was checking out the electrical circuits in the garage to see how I will be able to run my woodworking tools. I did not get ...
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2answers
234 views

How to connect Dryer outlet to a power distribution unit?

I have a 240V (4-prong) dryer outlet. I want to buy PDU (power distribution unit) so that I connect the dryer outlet to PDU, then connect PDU to (non-server) power supplies. The power supplies are ...
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1answer
427 views

220v alternatives for Lutron Caseta Smart Lighting? [closed]

I need to add another light switch in my home to pair with an existing one. In other words, I have an existing switch that controls a light, and I want to add another one with no wires to control the ...
2
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1answer
45 views

Multiway switches on 24V or 230V?

I will be redoing my room lights for 24 VDC LEDs, with multiway switches. I'm located in Poland. Should I put the switches on the 24V side or the 230V side of the circuit? What are the points to ...
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0answers
56 views

Double pole breaker partial failure?

Yesterday I was connecting a large toroidal transformer to an unused 240V 15A circuit in my apartment (US split phase) for testing. I plugged it in and I heard the breaker trip after a few seconds. I ...
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2answers
119 views

Why is my stove is no longer receiving 240V of power?

I have a general understanding of electrical and some know how, but I moved into a place at the beginning of 2021 and 3 days ago I come home and try to preheat the oven and nothing. I tried the broil ...
2
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1answer
32 views

Replacing old Electric Radiator Thermostat (220v) with a 4-wire Honeywell CT410B (Non-Programable)

When removing and tagging the wires from the box to the old Thermostat, the two Neutral (White) were wired together with a wire nut, and a single White wire (pigged-tailed) was going into the ...
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6answers
510 views

Does a 240v water heater circuit require a neutral?

I am confused something. I want to install a tankless water heater. Mounting the device, the plumbing, wiring, routing to the 200amp panel is all easy and straight forward. Where I get stumped is the ...
0
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1answer
54 views

Do I need to add grounding and replace breakers at my sub-panel?

I doubt this is legal for the most part, but I have a 240v subpanel on my insulated tiny house, shed whatever you wanna call it. Right now it's my office, but a while back I set it up with a 240v 30 ...
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4answers
236 views

240V outlet not working, reading 120V on each leg, 0V between legs

I have a woodworking shop with 3 - 240V outlets. I recently had some electrical work done in the house and now one of the outlets doesn't work. Testing the 2 working outlets (see below) I get 120V ...
2
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1answer
118 views

Can I integrate a 4800W heater into my current garage electrical setup? I seem to need too many circuits

I have a garage subpanel with 6 spaces. They are currently consumed by the following circuits: One for lighting. One for a few 120V outlets. Two for a 20A 240V circuit for a well pump. Two for a 20A ...
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2answers
245 views

Water heater on 30A breaker with 12/2

The water heater that came with my home when I purchased it is on a double pole 30A breaker and wired with 12/2 romex. The breaker seems to be sized correctly for the wattage (4500W) but should it be ...
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1answer
45 views

GFCI failure on 240v spa?

I have a 240V outdoor spa with a 30A GFCI disconnect nearby. The spa was working fine until a week ago. Totally dead. I had a spa repair come out and he diagnosed that it was due to the input power....
1
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1answer
338 views

Old kitchen range only has 3-wires, how to wire correctly to 4 wire circuit

So I have an old range that I'll probably replace soon, so I decided to inspect the wiring box under the counter. I wanted to make sure everything is safe when I wire the new range to the dedicated ...
3
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3answers
3k views

Wiring for 1 phase 220 volt bandsaw

I recently purchased a MBAND18BX2203, Laguna Tools 18|Bx 3HP 220V 18" Bandsaw and need to wire a 220 Volt outlet. I think I know what I need to do, but I have one question: I was confused by the ...
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1answer
82 views

How can I connect a 10/3 range to an old 8/2 circuit?

This was working fine, but I had to move the range, and I didn't pay attention when I disconnected it. There is an 8/2 in the wall (black white bare) and the range has 10/3 (red black white bare). I ...
2
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1answer
96 views

What to make of electrical rating etched into circuit breaker?

This is an extension on a previous question about a 240V outlet in my garage. At that time, I took the advice that I should: replace the 40A breaker in the garage with a 30A version (from the proper ...
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1answer
90 views

What are the unused 240V breakers in my panel for? [closed]

The main service panel in my house has eight 2 pole breakers in it. It breaks down as: 2 40A breakers for the AC units 2 50A breakers for the furnaces 1 40A breaker for the stove 1 30A breaker for ...

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