314.16 22.5 cu inch box

[Bob NH]

Originally I would have had only 6 # 12-2 with ground but I found another 240V line in my wall I wanted to run into the thermostat box for possible future use. I really didn't want to go wqith a 4x4 box because I'm trying to keep my post(location of this box) as skinny as possible.
Is there a long skinny box out there that could give me the cu inches I need?

You might be able to find a 2" raceway or duct that would fit in the recess with a cover that can be removed for access. Make it as long as you need.

Since you are going to have heaters along the baseboard somewher, maybe a finished box mounted at the floor/wall corner would not look to out-of-place.

I have also seen corner raceways that could mount in the floor/wall corner that would not look bad next to a heater unit.

An external box of some kind on the face of an outlet box would not look much bigger than a big wall-wart power supply.

The ones below may not work but could give you some ideas.

http://cableorganizer.com/wiremold/wiremold-aluminum-surface-raceways.htm
http://cableorganizer.com/cable-raceway/#Wiretrack
http://cableorganizer.com/surface-raceways/

 

[celtic]

Please excuse my incorrect use of the terminology.
Ignore my assumption of the number of conductors & use this instead....

I had (3) 12-2 w/gnd cables going into my thermostat box. Then after opening my wall I found (1) 12-2w/gnd cable. I want to add that to my box.

3 * 12/2 = 6 * 2.25 = 13.5
1 * 12/2= 2 * 2.25 = 4.5
EGC = 1 * 2.25 = 2.25
Total = 20.25

22.5 - 20.25 = 2.25
2.25 / 2.25 = 1
1 deductions remain...Get a blank or a bigger boat.

EDIT:
I screwed up the math!
Fixed it though...

 

[Bob NH]

Please excuse my incorrect use of the terminology.
Ignore my assumption of the number of conductors & use this instead....

I had (3) 12-2 w/gnd cables going into my thermostat box. Then after opening my wall I found (1) 12-2w/gnd cable. I want to add that to my box.

You probably don't NEED all of the conductors in the same box.

Consider putting two large boxes, one above the other, with a short nipple between them. If you have to go from one box to another, make the stripped wires long enough to go through without splices.

It will probably work best with metal boxes that have knockouts for conduit fittings.

 

[infinity]

This has over 25 cu ins of space:

http://www.aifittings.com/whnew67.htm

 

[celtic]

This has over 25 cu ins of space:



http://www.aifittings.com/whnew67.htm

That's a back-to-back box ....can the OP even access the back?

 

[acrwc10]

EDIT:
I screwed up the math!
Fixed it though...

Do the math the wrong way and it may just work as is with no need to change anything. Heck might even be able to get a smaller box in there:grin:

 

[celtic]

Do the math the wrong way and it may just work as is with no need to change anything. Heck might even be able to get a smaller box in there:grin:

LMAO....

Touche` pussycat