DIY Home Improvement Forum banner
1 - 9 of 9 Posts

·
Registered
Joined
·
7 Posts
Discussion Starter · #1 ·
I am thinking of using raceway to add an outlet to an existing circuit. Can I run THHN wires through the raceway or must I use Romex? And what would be the maximum fill for 1/2" raceway? Would 3 12 AWG THHN wires, or 12/3 Romex, fit safely?
 

·
A "Handy Husband"
Joined
·
13,678 Posts
The raceway must be in a dry location to use THHN. For conduit in wet locations use THWN or dual rated THHN/THWN
 

·
Registered
Joined
·
5,814 Posts
I am thinking of using raceway to add an outlet to an existing circuit. Can I run THHN wires through the raceway or must I use Romex? And what would be the maximum fill for 1/2" raceway? Would 3 12 AWG THHN wires, or 12/3 Romex, fit safely?
What is it that you are calling a raceway? Are you referring to a surface mount moulding?
 
1 - 9 of 9 Posts
Top