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Old 01-01-2013, 09:45 AM   #1
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


I need to move a 240V junction box from one side of the room (it used to feed a heater circuit) to the other. I presume this means I'll have to fish wire from the wallbox on the North wall up and over in the attic to the new box on the South wall.

What is code/best practice for this? Can I use heavy duty romex or do I have to enclose the wire in a tube of some kind? Any other tips?

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Old 01-01-2013, 09:54 AM   #2
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


What do you mean by "heavy duty" romex? Never heard that term before.

Just use the same cable as the circuit and an appropriately sized junction box. If the existing box is big enough just bring the new wire into that and splice there.

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Old 01-01-2013, 09:58 AM   #3
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


Is this a continuation of this thread?

So suddenly I'm a "handyman".
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Old 01-01-2013, 10:00 AM   #4
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


Speedy Petey---have the codes remained the same over the years? Does the new circuit need four wires? two power one neutral and a ground?
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Old 01-01-2013, 10:02 AM   #5
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


It would depend on the load. Many 240V loads do not require a neutral. You are thinking of sub panel codes.

For sub panels, the codes have "recently" changed regarding detached structures, but the 4th wire (EGC) for subs in the same structure have remained the same for as long as I can remember.
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Old 01-01-2013, 10:12 AM   #6
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


Mike, if the code has changed like for stoves and dryers, if the circuit needs to be changed it needs to be brought up to todays code.
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Old 01-01-2013, 10:43 AM   #7
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


Quote:
Originally Posted by k_buz View Post
It would depend on the load. Many 240V loads do not require a neutral. You are thinking of sub panel codes.

For sub panels, the codes have "recently" changed regarding detached structures, but the 4th wire (EGC) for subs in the same structure have remained the same for as long as I can remember.

Please elaborate on change as I am setting up a sub-panel later this week and have the 4 wires already.

Thanks
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Old 01-01-2013, 10:44 AM   #8
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


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Speedy Petey---have the codes remained the same over the years? Does the new circuit need four wires? two power one neutral and a ground?
Like the others have said, it depends on the circuit and the load. The whole "the code has changed for '220' " thing is a complete mis-nomer.

The only thing that has changed is that circuits for detached structure feeders and for household cooking appliances and electric dryers are not allowed to use the neutral to also serve as the grounding means. This is ONLY for 120/240v circuits. A straight 240v circuit would not apply since it does not utilize a neutral conductor.
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Old 01-01-2013, 10:51 AM   #9
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


Thanks
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Old 01-01-2013, 01:38 PM   #10
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


Quote:
Originally Posted by diystephen View Post
Is this a continuation of this thread?

So suddenly I'm a "handyman".

No, this is for me. In my utility room I'm wanting to move the dryer from one wall to the other.

The realtor can take his own risks - but not with my skin or liability.
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Old 01-01-2013, 01:49 PM   #11
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


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No, this is for me. In my utility room I'm wanting to move the dryer from one wall to the other.
Then why not say this from the start, as opposed to vaguely saying you "need to move a 240V junction box" and asking if you should use "heavy duty romex"? This little detail would have eliminated confusion and cleared things up.
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Old 01-01-2013, 01:57 PM   #12
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


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Then why not say this from the start, as opposed to vaguely saying you "need to move a 240V junction box" and asking if you should use "heavy duty romex"? This little detail would have eliminated confusion and cleared things up.

Well, I'm not moving the junction box for the dryer. I'm using a separate 20A 240 circuit that I'm pulling from a thermostat/spst junction box that used to feed a large baseboard heater in the same room. That way I'll still have 240V on the original wall, plus 240V on a new circuit on the garage wall. I'm thinking that may come in handy sometime as I am looking at buying a big air compressor and two 240V outlets on separate circuits will be just what I need.
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Old 01-01-2013, 01:58 PM   #13
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


Running an electric dryer on a 20A circuit?
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Old 01-01-2013, 02:00 PM   #14
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


So you are NOT moving your dryer from one wall to the other like you said in post #10???
I'm confused.
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Old 01-01-2013, 02:00 PM   #15
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What is Code/Best Practices for Running a 240V cable to other Side of Room?


Me too

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