Wire size permissible on 50amp range recept.

[ALLELECTRIC95]

Can anyone clarify the wire size allowable for the range circuit using a 50amp receptacle. I am wanting to use 8 AWG but I am not positive that this is permissible per the NEC. Thanks!!

 

[iwire]

Aluminum or copper?

NM, MC or pipe and wire?

 

[Dennis Alwon]

Can anyone clarify the wire size allowable for the range circuit using a 50amp receptacle. I am wanting to use 8 AWG but I am not positive that this is permissible per the NEC. Thanks!!

Check out Table 210.121(B)(3)

 

[ALLELECTRIC95]

Using copper.

 

[Dennis Alwon]

Using copper.

If it is on a 40 amp cir. you should be good.

 

[ALLELECTRIC95]

Using NM and copper.

 

[celtic]

Using NM ....

Does 250.140 ('05) play in here?

 

[220/221]

NM and copper = 40 amp


SE and copper = 50 amp

Go figure :-?

 

[Jim W in Tampa]

Why use copper ?

 

[Dennis Alwon]

NM and copper = 40 amp


SE and copper = 50 amp

Go figure :-?

Not anymore se is the same as nm for feeders

 

[1793]

Not anymore se is the same as nm for feeders

Only if they are under the 2008 cycle.

 

[Dennis Alwon]

Only if they are under the 2008 cycle.

That is why I said not anymore. Of course I assumed that everyone knew I meant the 08

 

[LarryFine]

. . . I assumed . . .

Uh, oh . . .

 

[steelersman]

Not anymore se is the same as nm for feeders

this isn't a feeder

 

[Dennis Alwon]

this isn't a feeder

Ok for branch circuits it's a no go also.

 

[steelersman]

Ok for branch circuits it's a no go also.

so in the 08 code se has the same ampacity as nm?

 

[Dennis Alwon]

so in the 08 code se has the same ampacity as nm?

Yep read art. 338.10(B)(4)

 

[zappy]

Why use copper ?

#1 It costs more so that means it's better?#2The scrap is worth more!

 

[mistermudd]

I noticed nobody referred to 2005(WA state is still using 2005) NEC 334.80, which limits NM-B to the 60 C column. #8 NM-B is good for 40 amps max on a range circuit.

 

[celtic]

I noticed nobody referred to 2005(WA state is still using 2005) NEC 334.80, which limits NM-B to the 60 C column. #8 NM-B is good for 40 amps max on a range circuit.

...and yet, I could put a 50A receptacle on that 40A (#8 NM-B) circuit [T210.21(B)(3)].

...from #3