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220v floor heating whree does my Neutral and Ground wire go?

220v floor heating whree does my Neutral and Ground wire go?

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  #1  
Old 12-15-11, 03:55 PM
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Thumbs up 220v floor heating whree does my Neutral and Ground wire go?

Hi, Got 220v from fuse box GFI to 22 Cubic Inch PVC gang with 4 pair wire, have thermolstat connection and wires from Floor Heating Mat. I understand that I connect my thermolstat (Red Load Active and Black Load Neutral)to Red and Black floor mat wires (no prob), I attach my thermolstat (Red Power Active and Black Power Neutral )to Red and Black from my 220v 4 pair wire (no prob), I am left with my ground and White Neutral from my 4 pair wire. I think maybe I run a copper ground from a close metal ground into my gang and then connect my copper ground to it (not sure), also what do I do with my Neutral?

Thanks for any help.
Jay
 

Last edited by jay01th; 12-15-11 at 04:14 PM.
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  #2  
Old 12-15-11, 04:18 PM
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You description is a little confusing. You say 4 pair wires, but I think you mean 3 conductor cable + a ground. Four pairs would be 8 conductors.

240 volt circuits do not need a neutral.

The ground should connect back at the panel where the circuit originates.

Follow up and more info can be given.

And you have fuses and not breakers correct?
 
  #3  
Old 12-15-11, 05:28 PM
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OK, Yes I know where to connect the ground at the panel, but at the Gang box where does the ground connect to?
Thanks pcboss
 
  #4  
Old 12-15-11, 05:34 PM
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I have breakers it is a new house, but once I connect the ground at the panel where does the other end of the ground go - the end that comes to the gang box?
thanks pcboss
 
  #5  
Old 12-15-11, 06:23 PM
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The ground would connect to the device ground screw and the box if metallic.
 
  #6  
Old 12-16-11, 06:03 PM
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Originally Posted by pcboss View Post
The ground would connect to the device ground screw and the box if metallic.
The device does not have a ground, and the box is PVC- so this is why I am confused on where to connect the ground. Should I switch out to a metal box and then ground it to a ground source close by?
Thanks
Jay
 
  #7  
Old 12-16-11, 06:19 PM
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Then just leave the ground in the back of the box.
 
  #8  
Old 12-16-11, 08:21 PM
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also what do I do with my Neutral?
And to expand a bit just cap off the neutral at both ends. No need to connect it but tag it at the panel with an explanation.
 
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