DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Electrical (http://www.diychatroom.com/f18/)
-   -   wire size (http://www.diychatroom.com/f18/wire-size-23589/)

greywolf6 07-13-2008 07:59 AM

wire size
 
I am not sure of wire size I need to wire a heater 240 volt 38 amp about 10 ft run. also will a 50 amp breaker work safely?

jrclen 07-13-2008 10:43 AM

Quote:

Originally Posted by greywolf6 (Post 138624)
I am not sure of wire size I need to wire a heater 240 volt 38 amp about 10 ft run. also will a 50 amp breaker work safely?

A number 6 wire on a 50 amp breaker will work fine.

nap 07-13-2008 12:19 PM

unless this is UF, what is wrong with a #8 ?

chris75 07-13-2008 03:07 PM

Quote:

Originally Posted by nap (Post 138701)
unless this is UF, what is wrong with a #8 ?

A agree and this is why....

If this is fixed electric heat then 424.3(B) applies.... 125% added to the branch circuit... 38 Amps x 125% = 47.5 Amps, looking at 310.16, #8 AWG is good for 50 amps @ 75C, as long as its not NM wire, which is restricted to the 60 column at 40 AMPS.

jrclen 07-14-2008 09:36 AM

I completely agree with you guys. I knew when I posted that someone would confuse the guy with facts. I am going with the #6 because he is putting in NM. How do I know? I don't. But like I said, the #6 will work just fine with a 50 amp breaker. :thumbsup:

chris75 07-14-2008 05:10 PM

Quote:

Originally Posted by jrclen (Post 139004)
I completely agree with you guys. I knew when I posted that someone would confuse the guy with facts. I am going with the #6 because he is putting in NM. How do I know? I don't. But like I said, the #6 will work just fine with a 50 amp breaker. :thumbsup:

I just hate people to spend money they dont have to, but you sure make an excellent point, I do admit that.

jrclen 07-14-2008 06:56 PM

Quote:

Originally Posted by chris75 (Post 139151)
I just hate people to spend money they dont have to, but you sure make an excellent point, I do admit that.

Hopefully the OP will come back and let us know more details. I do agree about the money.

nap 07-14-2008 07:57 PM

Quote:

Originally Posted by jrclen (Post 139004)
I completely agree with you guys. I knew when I posted that someone would confuse the guy with facts. I am going with the #6 because he is putting in NM. How do I know? I don't. But like I said, the #6 will work just fine with a 50 amp breaker. :thumbsup:


My commercial/industrial mentality made me do it.:whistling2:

jrclen 07-14-2008 10:08 PM

Quote:

Originally Posted by nap (Post 139218)
My commercial/industrial mentality made me do it.:whistling2:

I can relate to that Nap. I am working very hard to overcome that. I just switched to resi myself. I was just showing off my recent discovery of having to use the 60c column for NM. :laughing:


All times are GMT -5. The time now is 01:10 AM.