ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Lock-down Thread
by Bill Addiss - 02/27/21 01:16 PM
Northern Tool Recalls Powerhorse Generators
by Admin - 02/25/21 09:49 PM
You will never guess
by gfretwell - 02/25/21 07:48 PM
New tool
by SMOKEYBOB - 02/15/21 04:59 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 14 guests, and 19 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Outdoor services in Alaska? #194533 06/07/10 05:50 PM
Joined: Jun 2006
Posts: 613
M
mikesh Offline OP
Member
The Canadian Electrical code is very restrictive with regard to allowing a service to be placed out doors. I have noted the NEC does allow this.
One of the biggest objections is related to breaker performance when it is cold outside.
What about in the state of Alaska? Are there specific amendments to the NEC for Alaska? Are all the branch breakers allowed outside too?
I have seen test data that shows ambient can effect the operation of breakers and that 135% overloads do not clear in the prescribed time in the breaker standards.
Tell me what you know about this.
Thanks

2017 / 2014 NEC & Related Books and Study Guides
Re: Outdoor services in Alaska? [Re: mikesh] #194538 06/09/10 05:23 AM
Joined: Jun 2004
Posts: 1,273
T
Tesla Offline
Member
The local AHJ will insist on placing the panel some place inside. This is done even in Truckee, California.

Truckee is about a mile high in the Sierras on I-80.

Snow is on the ground typically into June. Snow flurries may happen in July. First frost will come in late August, perhaps September.

So, the meter socket faces outside -- and the rest of the Service faces inside a heated garage or the distribution panel is in the center of the home.

My sister's place used the laundry closet. ( No longer allowed. )

The MAIN is placed to the outside so that the fire department can kill it. It is robust enough for the cold.

Alaska surely has its own area-specific standards.

But you can see, no one wants branch breakers that cannot be accessed without braving extreme elements!

BTW Sq D makes a residential panel with the above traits as an all-in-one: MAIN and meter to the outside--panel & breakers to the inside.


Tesla
Re: Outdoor services in Alaska? [Re: Tesla] #194539 06/09/10 02:07 PM
Joined: May 2005
Posts: 984
G
ghost307 Offline
Member
Imagine having to brave the Alaska weather when the breaker in an outdoor panel for the bathroom lights trips while you're taking a shower.

BRRRRRRRRR!!!!!!


Ghost307
Re: Outdoor services in Alaska? [Re: ghost307] #194540 06/09/10 05:18 PM
Joined: Jun 2006
Posts: 613
M
mikesh Offline OP
Member
Tesla
If I understand you, Alaska allows the main breaker or fused disconnect outside with the meter, but the panel and branch breakers must be located in a heated portion of the house?
Square D makes a panel that actualy does that?
It seems that would just transmit a lot of cold air through the panel into the house?

Re: Outdoor services in Alaska? [Re: mikesh] #194591 06/12/10 12:15 AM
Joined: Jan 2005
Posts: 5,316
renosteinke Offline
Cat Servant
Member
Tesla is slightly misleading.

Truckee is near Lake Tahoe, which is even higher, colder, and gets even more snow. Tahoe is also shared between Nevada and California.

In either case, there are many installations where the breakers are outside - especially where mobile homes and RV's are connected to pedestals.

It is true that the farther breakers are from the 'calibration' temperature, the less their performance matches the curves. Heat makes them trip sooner, cold slows them down - just like derating wire.

Of greater concern, IMO, are conditions that might lead to moisture condensing within the breakers.

Keep in mind that most of Alaska is a maritime environment, rather than arctic.

Re: Outdoor services in Alaska? [Re: renosteinke] #194592 06/12/10 01:41 AM
Joined: Jun 2004
Posts: 1,273
T
Tesla Offline
Member
Mike...

The Sq D product is clearly designed for the garage.


Tesla

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
AllClear
AllClear
Belmond Iowa US
Posts: 44
Joined: August 2005
Show All Member Profiles 
Top Posters(30 Days)
MCosta 3
Popular Topics(Views)
275,453 Are you busy
209,361 Re: Forum
196,636 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3