ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
sparky 5
Recent Posts
Permit Snafus...AHJs and Contractors Jump in
by sparky. 04/29/17 05:59 PM
201 volt equipment?
by bigpapa. 04/29/17 12:15 AM
Schneider LC1D09
by jraef. 04/28/17 11:05 PM
Electrode boilers question
by annemarie1. 04/27/17 01:40 PM
Why cables look like they do
by LongRunner. 04/26/17 09:36 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
235,015 Are you busy
169,862 Re: Forum
163,052 Need opinion
Who's Online Now
0 registered members (), 68 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#189016 - 09/15/09 05:06 PM SER Cable  
jem  Offline
New Member
Joined: Apr 2007
Posts: 8
nc
Old method for 200 amp residemtial service. 200 amp Main lug Meter combo. Pull larger 240 Volt loads outside to meter combo and run 100 amp feeder (#1 aluminum SER cable) to subpanel in the intereior of the house. The changes to Article 338 seem to say that this #1 SER cable will be now be limited to 85 amps because it is being used as an interior wiring method(from the disconnect on the outside of the house through the crawlspace to an interior panel). Am I reading this correctly.


2017 / 2014 NEC & Related Books and Study Guides

#189018 - 09/15/09 10:04 PM Re: SER Cable [Re: jem]  
Tom  Offline
Member
Joined: Jan 2001
Posts: 1,044
Shinnston, WV USA
That's the way I see it also. If you follow the reference to part II of Article 334, then you're limited to the ampacity in the 60 degree column & that is 85 amps.

I looked up the ROP from the 2008 code cycle & it appears that this was the intent. If you think about it, both cables are very similar with the SER having an outer jacket that is a little tougher than NM.


Few things are harder to put up with than the annoyance of a good example.

#189019 - 09/16/09 12:57 AM Re: SER Cable [Re: Tom]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,069
Estero,Fl,usa
I read the recap of the 2011 changes in the IAEI magazine and they are doing away with the whole "feeder" language in 310.15(B)(6) so you are going to have more surprises when it comes to feeders, even if they do carry the whole house load. Basically that table will only apply to service conductors if I read the change right.
Couple this with the 338 change and you are running 4/0 Al SER for a 150a disco outside to a 150A L&A panel inside.
If you have a 200a you won't be able to use SER at all


Greg Fretwell


Member Spotlight
sbi
sbi
indiana
Posts: 47
Joined: March 2008
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 15 (0.002s) Memory: 0.7523 MB (Peak: 0.8786 MB) Zlib enabled. Server Time: 2017-04-30 14:55:08 UTC