The various exceptions and writing of the NEC have me a bit tripped up on this.
Are there any ONLINE box fill calculator that someone cant point me to that are reliable/accurate?
The numbers I'm getting dont seem to match anything.
I have a 3 gang box with:
2 x 12/2 (4 x 2.25)
3 x 14/2 (6 x 2.00)
3 devices - 2 conductors each, so is it (6 x 2.25) or (4 x 2.25 + 2 x 2.00)?
internal clamps (2.25)
Largest ground (2.25)
So I've got: 9 + 12 + 13.5 + 2 + 2.25 = 39.00
http://www.constructionmonkey.com/calculations/electrical/boxfill.aspx
Gives me 32.30
Where am I going wrong?
Are there any ONLINE box fill calculator that someone cant point me to that are reliable/accurate?
The numbers I'm getting dont seem to match anything.
I have a 3 gang box with:
2 x 12/2 (4 x 2.25)
3 x 14/2 (6 x 2.00)
3 devices - 2 conductors each, so is it (6 x 2.25) or (4 x 2.25 + 2 x 2.00)?
internal clamps (2.25)
Largest ground (2.25)
So I've got: 9 + 12 + 13.5 + 2 + 2.25 = 39.00
http://www.constructionmonkey.com/calculations/electrical/boxfill.aspx
Gives me 32.30
Where am I going wrong?