On Mar 15, 11:43*am, Wayne Whitney wrote:
On 2010-03-15, Limp Arbor wrote:

Three 12/2 NM cables going into a plastic box with an outlet

conductors 6
grounds * *1
Oulet * * *3

Devices are 2 per strap. *So for a single gang duplex receptacle,
that's just 2.

Total * * 10

Total 9, as long as you don't have any cable clamps that extend into
the box.

10 times 2.25 = 22.5 cubic inch box needed.

9 * 2.25 = 20.25

Cheers, Wayne

Thanks Wayne. I read 2 and knew it was 2 but don't know why I wrote 3
for the outlet.

So a dimmer switch or a GFCI outlet count the same as a single pole
switch?

It also sounds like you don't have to count wire nuts or pigtails.

I found the table online he
http://ftp.resource.org/bsc.ca.gov/t...3_page0219.pdf