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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40 views

Looking for a Catch-All solution - 220 to my garage, how can I cover all my bases?

I will be running 220v 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 ...
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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
69 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
127 views

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

Do they have a battery backup or something? Is it possible the breaker (a gfci breaker, which was a new one on me, also) is still letting 110 through? My first day in here I took a circuit tracer to ...
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2answers
118 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
203 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?
16
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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.
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0answers
132 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
74 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
78 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 ...
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1answer
44 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
44 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
102 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 ...
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1answer
21 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
169 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 ...
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1answer
49 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
129 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
109 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
126 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
42 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....
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1answer
101 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 ...
2
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3answers
759 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
76 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
92 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
85 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 ...
2
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1answer
106 views

Is THWN wire appropriate for an underground vehicle charging circuit?

We recently purchased a Tesla Model 3 and are planning on adding a 240V NEMA 14-50 outlet in our detached garage to improve charging speeds. Tesla's documentation specifies 6 AWG copper wire with 4 ...
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1answer
35 views

Is 10/3 @ 240 with ground good enough for a short run from sub panel to sauna heater?

I'm no pro, so I'm sorry in advance for doing my own work, but I enjoy the learning and experience. I've run aluminum 4/3 out to a new sauna with a sub-panel, roughly 100', which houses 2x single pole ...
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3answers
143 views

How can I safely connect a 240v shallow well pump to a switch?

I have a shallow well supplying utility water on a rural property. It's currently plugged into a standard 120v outlet. I'll be running a dedicated 240v circuit using 12/2 cable so I can use the pump's ...
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1answer
186 views

Why does my 240V range outlet have five wires?

We're planning to install a new gas range with an electric oven in the spot now occupied by our gas cooktop. The previous cooktop was a broken 70s electric that the owners had disconnected from the ...
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1answer
148 views

50 amp circuit breaker for a 30 amp electric oven?

My new 30 amp (240v) oven tripped a 50 amp breaker, and now will not heat. The warranty repair is happening, but here's my question: should I just put in a 30 amp breaker to protect the oven from ...
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1answer
71 views

Can I install 2 240v baseboard heaters in separate rooms?

Can I install "2" 240v baseboard heaters in separate rooms? supplied by "1" Quad 2-pole 240 volt circuit breaker with a 10/2 or 10/3 wire? each baseboard heater pulls about 500 to ...
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3answers
55 views

New GFCI to replace one that was in the subpanel of a hot tub

I have a dedicated 50 amp 240 v circuit to a hot tub. Had it over 15 yrs no problems. Recently the GFCI that was in the sub panel would buzz and then trip or sometimes work just fine after resetting....
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1answer
51 views

Can I power a german 240v spindle motor off of a USA 240v nema5-50 welder plug?

I have bought this spindle for use on my cnc router. https://www.amb-elektrik.de/produkte/fraesmotoren/636/amb-fraesmotor-1050-fme-u-di-230v-fuer-er16-praezisions-spannzangen I have contacted the ...
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1answer
197 views

Any reason *not* to put electric oven on GFCI breaker?

I want to tap my electric oven's existing circuit to add a NEMA 6-15 outlet in my kitchen for a 240v kettle (the oven is rated at 21 amps and the breaker is 40 amps, so I think I should be OK adding ...
2
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1answer
121 views

What are some reasons that my 240V clothes dryer connection (outlet) suddently only has 18V per side?

My clothes dryer suddenly stopped working and I wasn't sure if it was my (new) dryer or the power outlet. Things I Tried I checked the circuit breaker and reset it but the dryer still didn't work. I ...
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1answer
76 views

Voltage on 10-30R metal faceplate

I just moved into a new house where there are two 240 volt 10-30R outlets in the garage, each with a 30-amp breaker and 10 gauge wire. Voltage across the hot terminals is 247 and, of course, ...
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1answer
63 views

Turning old AC wiring into a simple 120V outlet?

UPDATE: Resolved. The ground wire was located behind the box, in the wall. It's a bit short (??) but it will do once I put the subpanel in. Thanks for everyone who responded. I am tracing the somewhat ...
2
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1answer
131 views

Is it possible to wire a 240v outlet so that after I don't need 240v anymore I will have two 120v circuits?

I'm in the US. I will be installing a 240v outdoor outlet for an EVSE (electric car charger). However, in a few years I will have a garage built (elsewhere) and will move the EVSE to the garage, so ...
2
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0answers
65 views

Garage outlet causes unrelated outlet's breaker to trip [closed]

When I use the power outlet (240v, 15A) outlet in my garage, it trips the breaker for the power in my home office upstairs. What is also interesting and concerning is that the breaker for the garage ...
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0answers
107 views

How do you wire a 250 volt plug when you need 240 volt power for a hot water heater

I have a 50 breaker/ plug in a temporary RV power source. The hot water heater I have needs 240 volt. How do I connect the wires on the 50 amp plug so that it runs the 240 volt needed for the hot ...
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3answers
194 views

A/B switch for Two 240V connections into Electrical Panel

I have 125amps coming into my house from PGE and my panel is 125amps and has a few free breaker slots. Currently I have a 240v oven, 24v clothes drier, 240v floor heating and 240v EV car charger (...
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2answers
74 views

How to connect a 4-wire range from this panel?

I am trying to connect a new 4-wire range in a new location in my house. When I removed the old cover I see 3-wires connected 1) red 2) black, and 3) green. If I understand correctly, red and black ...
7
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4answers
3k views

How do I wire a modern 240V 3 prong range to a 250V 50A 3 prong outlet?

This is for wiring in the United States. My wife ordered a new GE electric range top, and it came with a 3 wire flex conduit permanently attached. I cannot change it. It has a black wire, a red wire ...
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1answer
119 views

Can I install required breaker in my electrical panel?

GOAL: installing an external 240v wall outlet to power a future air compressor. I have attached a picture of the electrical panel in my house. I would like to understand what I am looking at in the ...
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2answers
5k views

How to wire a 4 prong outlet in my generator to 3 prong dryer?

I have a generator that I want to be able to run most of the house on in the event of a hurricane, I live in SE Texas. I also have a couple of welders that I plug into my dryer outlet via 8/2 Romex. ...
2
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2answers
147 views

Is #10 wire correct for my mini-split system on a disconnect?

I have a disconnect box that is on a 50 amp breaker connected to a disconnect box using 6 AWG. In order to connect my mini split system to the disconnect do I use 10 AWG wire based on the information ...
4
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1answer
81 views

Replaced my first power cord. Will I set the house on fire?

I’ve replaced the power cord of an appliance for the very first time. How does it look? I have switched the appliance on for 3 mins and there were no fires. I just want to make sure it’s safe. It’s a ...
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2answers
71 views

House wide 24v dc on single extra conductor?

Is it feasible to provide a house wide 24v DC supply that uses mains neutral or ground for the -ve side? Edit: I removed reference to "NEUTRAL OR ground" because risks, and RCDs, per answers....
3
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2answers
108 views

Can I connect my EU 230V 2.8kW appliance to a US 240V 20A receptacle?

The appliance is a pizza oven with Schuko plug [Picture 1], running at 240V 50-60Hz 2.8Kw. The receptacle is a US 240V 20A [Picture 2] to which is currently connected the PTAC [Picture 3]. Sharing the ...

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