Electric Range Branch Circuit

[smallfish]

I'm inspecting a residential service-panel upgrade when I notice #8 awg THHN copper wires terminated on the load side of a 50 amp two-pole breaker. These 3-wire branch circuit conductors in a nonmetallic-sheathed cable supply an electric range.
The breaker is 60/75 degree rated and so I understand by 2008NEC110.14(C)(1)(a) that these conductors are safely protected. But do I need to expose the range plug and range cord to see if these are also sized for 50 amps for their protection?
Thanks

 

[jumper]

I am not sure of the question. IIRC the cord and receptacle would be rated at 50 amps, since 40 amp ones do not exist AFAIK.

 

[rcarroll]

If it's a non metalic sheathed cable, you have to use the 60 deg. column. Breaker at 40 amps required.

 

[infinity]

I agree, with #8 NM cable 40 amp OCPD and 50 amp receptacle/cord set.

 

[jumper]

Is the cable SE or NM/Romex?

Since this is a panel upgrade, I imagine the original work is pre 2008 code.

 

[LEO2854]

I'm inspecting a residential service-panel upgrade when I notice #8 awg THHN copper wires terminated on the load side of a 50 amp two-pole breaker. These 3-wire branch circuit conductors in a nonmetallic-sheathed cable supply an electric range.
The breaker is 60/75 degree rated and so I understand by 2008NEC110.14(C)(1)(a) that these conductors are safely protected. But do I need to expose the range plug and range cord to see if these are also sized for 50 amps for their protection?
Thanks

Is the cable SE or NM/Romex?

Since this is a panel upgrade, I imagine the original work is pre 2008 code.

Looks like he has Romex.If the

The breaker should be 40 amps.

334.80 Ampacity. The ampacity of Types NM, NMC, and
NMS cable shall be determined in accordance with 310.15.
The allowable ampacity shall not exceed that of a 60?C
(140?F) rated conductor. The 90?C (194?F) rating shall be
permitted to be used for ampacity adjustment and correction
calculations, provided the final derated ampacity does not exceed
that of a 60?C (140?F) rated conductor. The ampacity of
Types NM, NMC, and NMS cable installed in cable tray shall
be determined in accordance with 392.80(A).

 

[jumper]

Looks like he has Romex.If the

The breaker should be 40 amps.

I think 3 wire romex to a stove is not legal.

250.140

 

[LEO2854]

I think 3 wire romex to a stove is not legal.

250.140

Good catch i did not see that....:thumbsup:

 

[jumper]

Good catch i did not see that....:thumbsup:

I have seen straight 240V cooktops, no 120V needed, but not a range.

 

[Dennis Alwon]

I have seen straight 240V cooktops, no 120V needed, but not a range.

I wired a Wolf ( I think) induction range that was straight 240V.. I am pretty certain it was a full range as I needed 50 amps to it.

 

[jumper]

I wired a Wolf ( I think) induction range that was straight 240V.. I am pretty certain it was a full range as I needed 50 amps to it.

Rare beast, timer, light, etc are usually 120V, No?