ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Trumpy 5
Recent Posts
What do you do?
by HotLine1. 09/20/17 08:44 PM
Supporting conduit bodies
by ghost307. 09/18/17 12:12 PM
Thermal Imaging Camera upgrade
by Potseal. 09/18/17 11:57 AM
Linear Power Supply Quits Under Load
by JoeTestingEngr. 09/15/17 11:37 PM
Recreational Trailer Power Supply
by David1. 09/14/17 01:55 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,836 Are you busy
176,591 Re: Forum
168,513 Need opinion
Who's Online Now
0 registered members (), 56 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#217072 - 04/22/16 09:42 PM Table 39  
brsele  Offline
Member
Joined: Jul 2008
Posts: 91
Northern Ontario
So Ontario is adopting the new code starting May 1st.
As I believe most of you have been working with the new code for a year now, I have a question with regards to the new table 39.

As per 8-104(6)(a), when would somebody put an 89A calculated load on a 100A service?

Or is somebody manufacturing main breakers now rated for 100%

Thanks... Bruce


Tools for Electricians:

#217073 - 04/23/16 05:35 PM Re: Table 39 [Re: brsele]  
twh  Offline
Member
Joined: Mar 2004
Posts: 918
Regina, Sask.
8-200(3) says calculated loads for residential services are not continuous.


#217074 - 04/23/16 09:03 PM Re: Table 39 [Re: brsele]  
brsele  Offline
Member
Joined: Jul 2008
Posts: 91
Northern Ontario
Thanks TWH.
This question came to me as I've been asked to wire a new house being built with electric heat. A 100A service was specified.

This is the first time in my life I've been asked to supply a 100A service for a new house and electric baseboard heaters.

So I did a load calculation and came up with 85A.

I always thought that the max. calculated load for a 100A service was 80A and the max. for 200A was 160A.

I'm wondering if this is a case where I was originally taught wrong and never questioned it, or if something changed and I never noticed because everybody asks for a 200A service.



Member Spotlight
Attic Rat
Attic Rat
Bergen Co.,N.J. USA
Posts: 524
Joined: December 2003
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.014s Queries: 15 (0.003s) Memory: 0.7511 MB (Peak: 0.8786 MB) Zlib enabled. Server Time: 2017-09-21 01:24:32 UTC