ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Where is Everyone?
by gfretwell - 04/09/21 01:08 AM
HI gang, long time since I was here...
by gfretwell - 04/09/21 01:02 AM
Lock-down Thread
by gfretwell - 04/06/21 09:30 PM
Portable Generator Grounding
by JoeTestingEngr - 03/14/21 03:48 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 20 guests, and 15 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Table 39 #217072 04/22/16 09:42 PM
Joined: Jul 2008
Posts: 98
B
brsele Offline OP
Member
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:
Re: Table 39 [Re: brsele] #217073 04/23/16 05:35 PM
Joined: Mar 2004
Posts: 947
T
twh Offline
Member
8-200(3) says calculated loads for residential services are not continuous.

Re: Table 39 [Re: brsele] #217074 04/23/16 09:03 PM
Joined: Jul 2008
Posts: 98
B
brsele Offline OP
Member
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.


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
sbi
sbi
indiana
Posts: 47
Joined: March 2008
Show All Member Profiles 
Top Posters(30 Days)
BigB 4
Popular Topics(Views)
277,425 Are you busy
211,153 Re: Forum
198,186 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3