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#218292 - 03/13/17 12:27 AM Sub - Panel  
Boobear  Offline
New Member
Joined: Jan 2017
Posts: 2
New York
Can 6/3 Romex be used for a 60 amp sub panel ?


2017 / 2014 NEC & Related Books and Study Guides

#218293 - 03/13/17 11:02 AM Re: Sub - Panel [Re: Boobear]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,853
Brick, NJ USA
With 60 amp OCP at the source of the feeder, yes. As long as it is in a location that is OK for NM, and not subject to physical damage.

However, your profile indicates you are in NY, so I suggest you check if there are any local issues with NM.


John

#218294 - 03/13/17 02:20 PM Re: Sub - Panel [Re: Boobear]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,099
Estero,Fl,usa
Doesn't this limit you to 55 amps?


Quote
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
2014 Edition NATIONAL ELECTRICAL CODE
(140°F) rated conductor. The 90°C (194 OF) 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.


Greg Fretwell

#218295 - 03/13/17 05:45 PM Re: Sub - Panel [Re: Boobear]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,853
Brick, NJ USA
Yes, Greg.
However, there is no 55 amp CB or fuses, which allows the next higher amperage.


John

#218296 - 03/13/17 06:02 PM Re: Sub - Panel [Re: Boobear]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,099
Estero,Fl,usa
OK cool. I knew there was a loophole, I just had a senior moment. I guess I shouldn't answer questions until I get my second cup of coffee.


Greg Fretwell

#218297 - 03/13/17 06:31 PM Re: Sub - Panel [Re: Boobear]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,853
Brick, NJ USA
Senior moments are quite common with me also.

Coffee (2nd cup) by 9:00AM the latest.

PS: Just went thru the math at a burnout. 10 sets of 500KCMil Cu, no longer equates to 4000 amps. Yes, it was an old service, however, now it will be 10 sets of 600KCMil Cu. Hopefully, they can pull out the old. With a major snow event Tuesday, my Twp is closed, and may close Wed also.



John

#218298 - 03/14/17 05:36 PM Re: Sub - Panel [Re: Boobear]  
geoff in UK  Offline
Member
Joined: Dec 2002
Posts: 183
UK
Your weather has made the national news here in UK. How are you getting on with it?


#218299 - 03/14/17 06:12 PM Re: Sub - Panel [Re: Boobear]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,853
Brick, NJ USA
Here in NJ, where I am (coastal) it has been heavy rain, and gusty winds from around midnight to 300PM. Where I work, 50 miles to the north, there was/is 12+ inches of snow, and wind.

Further north, into real north Jersey I hear 18-24" snow.

All in all, my snow blower sits in the garage, only used once sp far this year.


John

#218308 - 03/15/17 05:21 AM Re: Sub - Panel [Re: Boobear]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,099
Estero,Fl,usa
Brrr
Your cold front got down here too but it translated into 1/4" of rain in about 15 minutes and then it cooled down a little. (70 day, 50 night)


Greg Fretwell

#218309 - 03/15/17 03:23 PM Re: Sub - Panel [Re: Boobear]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,853
Brick, NJ USA
"Cold Front" at 70 day and 40 night. LOL

It was 17 when I left this AM, and 19 when I got up here to work. Five of us spent 1-1/2 Hrs hacking the ice/snow off of the Twp vehicles. About 12-14" on the ground here in Edison.



John

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