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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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7
votes
4answers
4k views

A 240V heater is wired w/ 2 hots and no neutral. What should the voltage between two hots read?

How come I am reading 120 between each hot and ground and 0 between 2 hots. What is this an indication of? Thanks! (i'm in USA)
0
votes
2answers
56 views

Can 4 wire 240v circuit 30amp also support a 120v outlet

I'm planning to run a four 10g wire 30 amp circuit to supply 240v for an electric dryer. I'm wondering if I can add a 120v outlet to this and only use one outlet at a time on the same circuit, instead ...
0
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2answers
61 views

How do I wire a single phase 240v APC UPS from US split phase power?

I want to wire in a 200/208/220/240v single phase APC UPS, the APC Smart-UPS RT 6000VA, there are both single and split phase versions of this, I have the single. It has the standard brown blue green ...
0
votes
1answer
84 views

Can I run a 120 for a receptacle off a 50 amp circuit?

I have a 50 amp wire capped from a previous oven that was removed. I want to put a receptacle in where this is located. When I wire it up my tester shows my hot/neutral reversed no matter how I wire ...
1
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1answer
87 views

Adding a 240v circuit-keep me alive

My current setup in a house I moved into is main 100A panel with two subpanels, one with a bathroom fan and two 240v line heaters (for a single room not attached to the main heating of the house for ...
0
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0answers
23 views

Refrigerator Compressor not working?

I unplugged then plugged back in my fridge an it isn't cooling or freezing! Does that mean my compressor is no more working? The light comes on inside the icebox?? Just not cooling or freezing..
9
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6answers
4k views

Can I safely plug a 15A 100V appliance into a 20A 250V wall outlet?

I have a convection microwave oven that has a normal 15A 100V plug. I can only conveniently access a 20A 250V outlet, which looks like this: (I am located in Taiwan). Are there any safety issues ...
0
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2answers
112 views

Can I have a 14-50 50 amp outlet installed?

Before I go through the trouble of finding an electrician to come to my apartment to give me an estimate, and to tell me whether he can do it or not, I wanted to ask this question here to find out if ...
6
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5answers
531 views

Two-phase/3-phase cooker connections in the Netherlands

I need to replace an induction hob that has been broken with another of the same model (IKEA Matmässig, just for sake of completeness). Original connection options The original connection to the mains ...
1
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0answers
68 views

Can an outside 13A socket gang be connected via a new junction box on an existing outdoor supply?

This is in the UK. We have a 240V outside electrical supply via a dedicated consumer unit: The cable is 3 CORE BS5467 XLPE SWA ARMOURED CABLES 600/1000V https://www.powerandcables.com/product/product-...
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2answers
49 views

Upgrading 240v electric heater to mini split AC with heat pump

I currently have a 240V heater that is controlled by a 2 wire thermostat, R and W wires. I understand that I can tie these try together to activate the heater. I plan on using the same wires from the ...
0
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3answers
82 views

Install a 240 volt mini-split condenser with a plug?

Is it possible to have a 240 volt mini-split condenser installed with an appropriate plug instead of a dedicated electrical line? Given that the circuit(s) used will be properly allotted for the unit. ...
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2answers
129 views

240V wiring question. Adding a wifi switch with only a 240v circuit available

I have an electric water heater in a closet. It is connected to a 240v 30A plug. (2 hots and a ground. NO NEUTRAL!) There is no other electrical circuit available. I would like to put a smart switch ...
10
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5answers
5k views

Why would replacing this 240 V outlet with a 120 V outlet trip my breaker?

I recently replaced a 20 A 250 V single outlet with a 20 A 125 V single outlet so that I could use it for my microwave in the kitchen. The original outlet had two gold screws and a grounding screw. ...
0
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1answer
74 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 ...
7
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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 ...
0
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1answer
45 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 ...
0
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3answers
72 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
votes
2answers
126 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 ...
0
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2answers
61 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 ...
0
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2answers
107 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
61 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
votes
1answer
49 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 ...
1
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3answers
59 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
0
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2answers
58 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 ...
0
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0answers
103 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. ...
1
vote
1answer
126 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
166 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 ...
0
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2answers
317 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
votes
1answer
458 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 ...
0
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0answers
43 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=...
0
votes
1answer
79 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 ...
1
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2answers
93 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
votes
1answer
66 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 ...
0
votes
2answers
61 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 ...
5
votes
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 ...
0
votes
3answers
83 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 ...
10
votes
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 ...
3
votes
3answers
755 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
votes
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 ...
0
votes
3answers
186 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 ...
1
vote
1answer
186 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/...
0
votes
2answers
160 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
votes
2answers
208 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 ...
0
votes
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
votes
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
votes
0answers
346 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 ...
1
vote
2answers
416 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 ...
-1
votes
1answer
685 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
votes
1answer
46 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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