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You need to read the 2011 code ... that is now changed. The se cable needs to be installed in thermal insulation before you must meet the 60C ampacity requirement. Otherwise terminal temperature...

Can you post a picture(s) inside the panel and of this bundle? I do agree with Trevor his suggestion may be your best bet under the circumstances. I was hoping to avoid that process but somehow I...

If the wiring method is romex cable can you trace the black wire that is connected to the breaker and see what white is in the same cable with the black?

Yep good idea, the manufacturer warns against extension cords but it looks like your distance is not very far.
Conduit is better and code compliant ... I like EMT but that choice is yours. You be...

Your welcome Jon

Turn off the main ... ;) this removes several points where you may short a screwdriver or bare end of a wire. Any exposed buss will also be de-energized. You may have to reset...

Hi Jon

Thought I would throw up this diagram at the end of my reply for you to reference while you get ready to run your new circuit.

Your going to be inside your breaker box. If you have not...

Dan

Not a problem. Misunderstanding what the OP was doing is something I do all the time

Lets all put our heads together and help Jon get his new circuit run for his window a/c .... gotta be...

Hi Jon

Yep you can do this yourself. There is a excellent chance this circuit is dedicated by evidence the outlet is a single (not duplex) receptacle.

Basically get a voltage tester or lamp and...

I concur that is not a 240 volt circuit but a 120 volt circuit. As you said if it is a dedicated home run it can easily be converted to 240 volts as long as there is room for a double pole beaker to...

Jon

You should reconsider. What plug is on the factory power cord for the a/c? Most likely at 240 volts it's a 6-15p with an LCDI. The power cord will not be protected by the 30 amp breaker being...

Yep that is a common mishap glad you found the problem.

Chris

First your drawing does show the breaker in parallel with the circuit. The white (grounded leg of a 120 volt circuit) never connects to the circuit breaker so the drawing is not correct as...

Ian

My previous reply assumed a detached shop from your home. Is the shop detached from your home? I'm picturing a meter/main located on your homes exterior and a 3" conduit running 160 feet...

Hello Ian

Your set up is very common. Detached shop with a cl 200 meter main as the service equipment for your home. Any service less than 226 amps is considered a cl 200 meter base.

You have...

No they don't. This simply means that if your wires are in a short conduit or 'nipple' 24 inches or less no deration is required for number of wires in conduit..

As for the 10 foot rule this...

Dave

Your welcome.


There is always the possibility where you may need to derate for ambient heat increases and number of wires in conduit.
But don't make this too hard.

BTW you did one...

Hi Dave
There have been so many misstatements about grounds and neutrals in this thread I don't want to go there to try and straighten the crooked line.

Lets look at the question you asked. Which...

Hello Rollie

Rollie I understood John to ask if he should use 12/2 awg or 10/2 awg meaning he was going to install a individual branch circuit for this welder of his and wanted to know what size...

John

You don't say the manufacturer of the welder you bought or the model # but if your information came from the owners manual and you are speaking about 21 AMPS being the maximum input amps at...

The problem with what your saying is the NEC and any jurisdiction I can think of have never allowed neutral to ground connections load side of the service equipment for general purpose branch...

Andrew



You may maintain that but you need to think it through a bit.

I'd be interested in hearing why you think it's safer to connect non current carrying ground to a system current...

John

First I see no bonding strap or wire on the neutral terminal itself. From experience I have never seen a wire ran to another part of the dryer to bond that part to the neutral or frame....

Jeez people this ain't that hard. Prior to 1996 3 wire dryers and 3 wire ranges were the norm. And btw way it was not 2 hots and a ground it was 2 hots and a neutral. Residential dryers have 120 volt...

Are you talking about one of these only custom home made?

http://ericson.thomasnet.com/Asset/1066FS-2007.jpg

Yep so you should be fine doing as we have been discussing.