Discussion Starter · #1 ·
What happens when I use 12/2 at home for adding outlets? Does mixing white and yellow wire make it less efficient, affect amperage, etc?
Correct. if someone should open up an electrical box and see the 12 ga they may think that the 15 amp breaker could be switched out for a 20 amp.And someone else may be confused in the future if I use 12/2 yellow?
All due respect I can't agree. You're always allowed to upsize wire. Running out to buy #14 simply to match what was there is OCD even by my standards!Correct. if someone should open up an electrical box and see the 12 ga they may think that the 15 amp breaker could be switched out for a 20 amp.
I don't see it as "always best"; there are lots of reasons to use larger wire than is required. And you're always allowed to. (provided, of course, that you respect terminal size ranges, conduit fill, yada yada).It is always best to keep the same gauge wire on a circuit to eliminate confusion.
Code prohibits it.
Yes...Down here in the states, in the early 2000, manufacturers changed 12/2 to a yellow jacket. Pretty universal now...at least I haven't seen any white 12/2 for sale for 15-20? years.Just as a note: Our 1977-1978 house has white 12/2 in the walls. The 12/2 romex we're putting in right now is yellow.
$36.17 for 14-2 at Home Depot.for what it's worth, I just bought a roll of 14/2 250' for $39.19 and as long I spent more than $45 the shipping was free. I bought 14/3 250' and 14/2 100' MC so it was more than $45. And it didn't take all that long to get here.