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.
413
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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. ...
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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-...
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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 ...
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2
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1
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115
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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 ...
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0
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1
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42
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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 ...
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0
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2
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56
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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 ...
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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 ...
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4
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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 ...
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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 ...
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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 ...
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1k
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Can I install a mechanical timer switch on a stove circuit?
I’m looking to put a timer switch on a stove circuit. It’s a common area stove that a client doesn’t want used at night due to people turning it on and leaving it open. Is it possible to put a timer ...
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0
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2
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92
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Utilizing 240v from an abandoned dual-pole 30amp breaker for subpanel
Helping my dad with a walk-in tub installation and need dedicated 20amp line. In effort to avoid cutting up a major part of the basement ceiling to access main house panel, I'd like to use an ...
2
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2
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splitting 10 AWG to L6-30 receptacle
TLDR; Can I take the (3) 10AWG THHN lines and split them to (2) L6-30 receptacles
Background:
I have 240V wired in my server room (computer equipment) and currently have 10AWG THHN running from a ...
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4
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653
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How do I wire Neutral on a AC disconnect box?
I've looked at multiple AC disconnect boxes, though haven't ordered any yet.
On every one I've seen so far, they have a connection for both phases of the 220v, and also a connection that appears to be ...
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Need advice on how to install 240V outlet for greenhouse heater
Update
Based on many inputs a much better solution is the heat pump. Big thanks to Harper and manassehkatz for the help, both answers are great and very helpful.
Original Post
Long story short, my dad ...
5
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Can I use a 60amp AC disconnect box for a 30amp circuit?
Can I use a 60amp 240v AC service quick disconnect box, despite my romex, circuit-breaker, and AC unit being merely 30amp 240v?
I'm getting ready for a AC tech to install a split unit AC, and am ...
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2
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2 sets of 12/2 romex for one 20 amp appliance?
I have a lot of 12/2. I have a 20 amp appliance that I am replacing with a new 20 amp appliance. However the old appliance is 110 and the new appliance is 220. Can I run a second 12/2 romex to convert ...
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3
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161
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Can I wire a 240v stove to 120v outlet (one hot and one neutral and ground, other hot capped off) solely to use the range top burner pilots?
A friend has a stove with a gas range top and 240v electric oven. He does not have space in his circuit breaker to wire a 240v double breaker and would need a whole new panel installed so too ...
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2
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240v heater with RIB01P30 relay for timer switch
I have a 240v 30 amp heater that I want to hook up a 120v push button timer to (neutral required for timer switch). I bought this RIB01P30 relay but am having some trouble wiring it up. This is the ...
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In Canada, are we allowed to have 240V and 120V outlets in the same box?
I am located in the province of Québec in Canada and I would like to know if it is permitted here to have these two sets of plugs in the same outlet box:
These 240 Volts outlets:
and these 120 Volts ...
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2
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429
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Should I use /2 or /3 cable for a NEMA 6-20R oulet?
I need to wire up a NEMA 6-20R and have both 12/2 and 12/3 cable available to me. Most diagrams I’ve seen show the hot’s to the horizontal spades (X and Y) and the bare ground to the Ground lug on the ...
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Wiring 100 Amp RV/tiny house panel from two 240v 50A feeds
I'm in the process of building a tiny house. An electrician helped me install my service panel and the connections throughout the house. We either never concluded, or I've forgotten, what the plan was ...
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How do I convert a 14-30R to a 6-20R?
I recently bought a home with a shop. The shop is full of these (I think it is a NEMA 14-30R):
But I have a compressor and band saw that need these (I think it is a 6-20R):
A picture of the box and ...
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How to hook up sauna heater wired for 3 wire 230v to US 240v?
Purchased a sauna at Home Depot. The heater that came with it is Advertised as 220v 20 amp. My plan was to plug it into a 240v outlet I have in the garage (though after looking at my panel it is ...
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3
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Should my 240v electric stove be grounded to the neutral like this?
I have an induction cooktop/stove in a California condo built in 2011-2012.
Recently, I had to pull the cooktop electrical and discovered that the stove has a 3 wire harness (red, black, yellow/green)....
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2
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Splitting a 240v Outlet: Between a Heat Pump Dryer (3-4a) and Stove (typical use 17-18a max)
Thank you for the help. Please feel free to tell me how I’ll melt myself. But really I just want to use a low-power way to dry clothes while not using the stove.
Summary:
The dryer itself (heat pump) ...
2
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1
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593
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Combining 240V and 120V outlets on the same circuit
I have a unused 20amp double pole circuit breaker (240/250V) at the panel. I would like to use it to control one 240V outlet (with L1, L2, G connections, no neutral) and two 120V outlets.
My thinking ...
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240V outlet (4 prong) reads 240V between live and neutral - dryer
Dryer used to work fine until one day it stopped powering up.
In checking the outlet, here are the findings (A - Live1, B - Live2, C - Neutral, D - Ground):
AB - 240V as expected
AC - 240V (should be ...
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3
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236
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240v heater from 120v countdown timer switch using a relay
I have a 240v 30amp infrared ceiling mounted heater in my garage for cold days when I want to work out there. It's controlled by a wall mounted thermostat by the same brand (Dr. Heater). I just ...
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0
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Convert 120v to 240v and run inverter/charger?
Currently I have a generator that outputs 240v/30A via a L14-30R generator transfer cable. I hook this to my inverter/charger to charge the batteries in my off-grid cabin. The Inverter/Charger ...
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0
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New stovetop appears to be single pole 240 [duplicate]
I have a new stovetop from Amazon that appears to be single pole 240 system. It has two hot but they are soldered together. Could this be right? Did I buy the wrong thing? It was an Amazon 'special'. ...
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1
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375
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Need specific instruction how to wire UK 3-wire 240v appliance to US 240v wiring and plug
I am looking to install a SIEMENs induction cooktop and downdraft extractor.
They operate on 240v 50/60 hz. I’ve confirmed with Siemens both pieces will run on US 60 hz service.
I’d like to know so I ...
0
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1
answer
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Can I Change The 240V Coming Into the Main Panel To 2 120V Panels?
I have a generator that has a 240V plug which connects to the main house panel via 8/3 Romex (Black, Red, White, Ground). The generator has two 30A breakers on it. Can I split that wire coming into ...
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1
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Can I Still Use 2nd Hot Wire In Panel If I Rewired Panel For 120V? [closed]
I'm working on a cabin that only has electricity supplied to it from a generator room outside the house. The wire coming into the house was 8/3 with the 2 hots going to separate sides of the panel and ...
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1
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2
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142
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Add 240V / 60A for Swim Spa
have a Square D breaker box that's almost full. Need to add a 240V 60A (technically 70a for length of run) for a swim spa. Have a quad breaker at top which is 20/30/30/20 (used for outside AC). ...
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142
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NEMA 10-30 Ground & Neutral Bonded
Remodeling a 1970’s era condo. The current dryer receptacle has a NEMA 10-30R on a 30 amp breaker. While we are going to be using gas instead of a 240v dryer, I decided to pull the plate and make sure ...
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branching off 240v mains before breakers [closed]
I want a 240v receptacle in the garage of my townhouse here in the USA. Originally I thought I needed to add a 240v circuit breaker to my panel, however the panel (and the box) looks dated and is full....
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2
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Looking for ground bus to install 30 amp breaker for 240v outlet [closed]
Is there a ground bus in this panel? It is an old GE panel. I see the white neutral bus but not the ground bus. Please advise on whether there's one .
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Can we pull 120V off of a 240V line for a hot tub without a separate breaker?
A friend of mine bought a used hot tub.
Here's the wiring diagram for a 230V permanent power supply:
His electrician installed a single 60A breaker in the subpanel. Our best bet based on the wiring ...
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1
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240 volt to 120 volt plug from HVAC blower motor
I am trying to place both germicidal lamps (approx 70 watts total) and a negative ion generator in my air condition return space where the blower motor is.
My fist advice was to run these two devices ...
0
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2
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137
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Reuse Existing 12/2 Romex to Power 220v L6-30R
I have two separate 12/2 Romex lines I ran in my house to a dual 20-Amp outlet (top outlet on one line, bottom outlet on the other). I used this to power a small server rack. I am changing my setup to ...
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240v panel-no neutral
This is the culmination of a few posts (Disconnecting 240 hots without disconnecting neutral?, 240v only subpanel, no ground?) to see if this seems right.
I had a subpanel A with 20A double pole ...
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2
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110
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weatherproof in use box/cover for Nema 6-20?
I would like to add 2 infrared heaters to my patio (3000w each) The Bromic eclipse heaters come with 6-20 plugs. It would be nice to have an in-use weatherproof cover so that can stay plugged in full ...
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0
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1
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224
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Powering shed with generator
I built a shed behind my house and want to use it as a small living space in the event of loss of power that can be heated/cooled. The shed is powered by a 30 amp breaker set and has four wires to the ...
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3
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Why are there only single pole circuit breakers in my home's service panel?
I got a new home a few months ago and I'm planning to install a 240v outlet to charge my Tesla and just notice that there are only single pole circuit breakers in the electrical panel. I thought at ...
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4k
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Need to reduce voltage from 245v to under 240v for large printer
I run a home business and have recently purchased a large HP 800w latex printer that requires a 220v outlet.
The manufacturer of the printer requires there to be no more than 240v going into the ...
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2
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196
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No power in an unused 240v line
I am a newbie, so please bear with me a little.
I have two circuits coming from the electrical panel that are 240v each, into my kitchen. One of those is used by a microwave/oven combo and is working. ...
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86
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Gfci on 220v air conditioner unit outside?
I need to run a line to a new ac unit outside. I figured I should only need 2 hots and a ground to supply the 220, but do I need to install a gfci breaker? I am running conduit on side of house.
0
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1
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126
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Irregular voltage read on 240VAC 1ph Residential
I was called to troubleshoot 1 of 2 minisplit AC units. While testing the voltage on the problem AC, W/ unit off, I got L1-GND=210.6 / L2-GND=9.4 / L1-L2=228
If that wasn't confusing enough, I got ...
0
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3
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759
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Does the NEC recommend metal or plastic boxes for 240V? [closed]
I need to install a junction box for 240V going to two separate Thermostats for baseboard heaters (one 750W and another 1100W). Should I use plastic or metal boxes for the thermostats and junction box?...
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