Canadian Electrical Industry News Week

Electrical Code Updates

Bill Burr

The CE Code is a comprehensive document. Sometimes it can seem quite daunting to quickly find the information you need. This series of articles provides a guide to help users find their way through this critical document. In this article: Section 8 — circuit loading and demand factors.

This is not intended to replace the notes in Appendix B or the explanations of individual requirements contained in the CEC Handbook,* but will hopefully provide some help in navigating the Code.

Section 8 is a general section of the code. It provides you the information you need to selectthe rating of a circuit, feeder or service (i.e., ampacity of the circuit conductors and rating/setting of the circuit over current devices). Rule 8-104 describes the rating of a circuit (feeder or service) and establishes the criteria between the calculated load and circuit (feeder or service) rating. As well, it determines branch circuit positions for dwelling units.

The special terminology used in this section includes:

• Basic Load—only lighting and receptacle circuits based on the dimensions of specific building occupancy as listed in Table 14
• Calculated load – the load calculated in accordance with the rules in this section
• Demonstrated Load— the historical demand watt information recorded over 24 months for the same type of facility

The General section outlines methods of calculating voltage drop, maximum circuit loading, use of demand factors, number of branch circuit positions and determination of living areas.It specifies standard voltage divisers to be used when calculating currents from watts or volt-amperes in low voltage systems; maximum allowable voltage drop in installations; maximum circuit loading based on the overcurrent device used; and the calculated load. You will also find here the factors for determining a continuous, cyclic, or intermittent load, and how this affects the selection of conductors and equipment.

This section also outlines conditions for Use of demand factors; that is, where

• the size required for conductors and switches is not available in a standard size
• two or more loads are installed, but only one can be used at a time
• air conditioning and electric space heating are installed and only the greater load is used for calculating demand
• loads of a cyclic nature are installed such that the maximum load cannot be supplied at one time)

Where additional loads are added to an existing service or feeder, Rule 8-106(9) permits the load to be calculated by adding the sum of the additional loads to the maximum existing demand load measured over 12 months.Other demand factors can be based on demonstrated load calculations by a qualified person, as determined by the authority having jurisdiction.

Another function of this section is to outline the number of branch circuit positions needed for dwelling units. This is based on the ampacity of the service and whether a central electric furnace is intended.

The Services and feeders section outlines the methods of calculating the minimum ampacity of service or feeder conductors for various types of occupancies. Although the various options and conditions may seem complicated, methodically working through the demand factors for each type of occupancy will allow you to determine the correct ampacity for service or feeder conductors.

The methods for determining demand factors for dwelling units are divided intosingle dwellings and apartment and similar buildings.For single dwellings you are given two options depending on the size of the dwelling.In the first criterion, where the living area of the dwelling exceeds 90 m2, the basic load is 5000w and additional loads are added with various demand factors as listed in Rule8-200 (1)(a)(ii to vii). The second criterion is to use a basic load of 100 A if the floor area is 80m2 or more, or 60 A if the floor area is less than 80 m2. Note that Rule8-110 designates how to determine the living area.

For two or more dwelling units of row houses, the minimum ampacity of service or feeder conductors from a main service is based on the above demand factors for each single dwelling, excluding electric space heating and air-conditioning loads, plus the demand factors outlined in Rule 8-202(3).

For apartments and similar buildings, the minimum ampacity of service or feeder conductors from a main service is calculated according to Rule 8-202.As with single dwellings and row houses above, the basic load is based on living area plus the demand factors for various other loads as outlined in Rule 8-202 (1 to 4). It should be noted that the load calculated for a single dwelling or for dwelling units in an apartment building is not considered to be continuous. However, a house load (i.e., load of equipment installed in a common area of an apartment building) is considered to be continuous for the purpose of Rule 8-104.

There are specific rules for determining the ampacity of service or feeder conductors for schools (Rule 8-204), hospitals (Rule 8-206), and hotels, motels, dormitories, and buildings of similar occupancy (Rule 8-208). For other occupancies, as listed in Table 14, the calculations are in Rule 8-210.

One other consideration is exit, emergency and show window lighting where the loads may be spread throughout the building. Exit and emergency lighting demand shall be determined by connected load. In the case of show window lighting, demand is based on 650W/m measured along the base of the windows.

This section also outlines required branch circuit positions and demand factors. Rule 8-300 provides demand loads for branch circuits supplying electric ranges and cooking units. Rule 8-302 specifies that branch circuits supplying data processing equipment be considered continuous loads. Rule 8-304 specifies that the maximum number of outlets per any 2-wire circuit is 12, unless the actual connected load is known and the load current doesn’t exceed 80% of the overcurrent device rating.This means that the load of a typical 2-wire circuit protected by a 15 A rated overcurrent device is considered to be 12 A.

Rule 8-400 provides guidance for the number and loading of branch circuits for automobile heater receptacles generally, and where the loading on each receptacle is controlled or restricted.

In the next installment we will look at Section 10 — Grounding and bonding.

Read the rest of the instalments in the series:
Part 1: Guide to the CE Code, Part I – A Roadmap (Installment 1 in a Series)
Part 2:
A Road Map to the CE Code, Part I – Installment 2
Part 3: Guide to the Canadian Electrical Code, Part I – Installment 3
Part 4: A Road Map to the CE Code, Part 1 – Installment 4
Part 5: Guide to the Canadian Electrical Code, Part I — Installment 5
Part 6: Guide to the Canadian Electrical Code, Part I — Installment 6
Part 7: Guide to the Canadian Electrical Code, Part I — Installment 7
Part 8: Guide to the Canadian Electrical Code, Part I — Installment 8
Part 9:
Guide to the Canadian Electrical Code, Part I — Installment 9
Part 10: Guide to the Canadian Electrical Code, Part 1 - Installment 10
Part 11: Guide to the Canadian Electrical Code, Part 1 - Installment 11


 

William (Bill) Burr is the former Chair of the Canadian Advisory Council on Electrical Safety (CACES), former Director of Electrical and Elevator Safety for the Province of BC, and former Director of Electrical and Gas Standards Development and former Director of Conformity Assessment at CSA Group. Bill can be reached at Burr and Associates Consulting billburr@gmail.com.

 

Changing Scene

  • Prev
This month, IDEAL is challenging competitors to draw an Electrical Power One-Line Diagram ...
EngWorks Inc. and the Alberta Electrical Alliance have announced a strategic partnership as of May ...
David Collie, ESA’s President & CEO, signs the new Leadership Accord, proudly committed to ...
Electro-Federation Canada (EFC) represents electrical and automation manufacturers, distributors ...
Demand for electric vehicles in Canada keeps increasing; 68% of Canadians will consider ...
ESA is warning on potential electrical hazards associated with the replacement of metallic water ...
The Canadian Apprenticeship Forum (CAF-FCA) has released its latest labour market information ...
The Ontario government is introducing new measures to help tradespeople get their certification ...
This ECAA Annual Training Day & AGM hybrid event will take place May 27th – May 29th. ...
Technical Safety BC has reviewed the 2021 Canadian Electrical Code (CE Code) to assess the impacts ...


 

ABB RoboticsABB Robotics is driving automation in the construction industry with new robotic automation solutions to address key challenges, including the need for more affordable and environmentally friendly housing and to reduce the environmental impact of construction, amidst a labor and skills shortage.

Robotic automation offers huge potential to enhance productivity, efficiency and manufacturing flexibility throughout the construction industry, including automating the fabrication of modular homes and building components off-site, robotic welding and material handling on building sites and robot 3D printing of houses and customized structures. 



Read More


 

Canadian Electrical Contractor Discussion Group: Can You Count the Deficiencies?

EIN CECD 400Have you ever been called to fix the work of a 'handyman'?

"Was supposedly done by a"certified ' electrician....told the homeowner that he got a $266 permit....no record at TSBC. Can you count the deficiencies?"

"There is a second panel change in the triplex also.......even more deficiencies. Think the guy was a glorified handyman. Ones not obvious: 240 BB heat hooked up 120....drier on 2p20....range on 2p50....water heater fed with 2c14 Bx on 2p15."

Go HERE to join the discussion

 


 

Smart GridHarnessing Canada’s immense clean energy resources requires transformational investments to modernize our electricity grid. The Government of Canada is investing in renewable energy and upgrading the electricity grid to make clean, affordable electricity options more accessible in communities across Canada.

The Honourable Seamus O’Regan Jr., Minister of Natural Resources, today launched a $964-million program to support smart renewable energy and grid modernization projects that will lower emissions by investing in clean energy technologies, like wind, solar, storage, hydro, geothermal and tidal.

Read More

 


 



Trilliant Partners with the City of CowansvilleThe City of Cowansville in south-central Quebec is the largest city in the Brome-Missisquoi region, with more than 15,000 residents. Despite being a smaller-sized city, it is known as an economic and industrial hub.

It also has a strong focus on innovation and efficiency — as demonstrated by decisions such as the one it made in 2017 to use beet juice to help combat icy winter roads, allowing the City to reduce the amount of salt it was using, thereby saving money and decreasing the impact on the environment. 

 

 

Read More


 

Keith SonesBy Keith Sones

The writing was on the wall.  The closures would happen. But a lot of people were upset, and I was one of them. 

In the early 2000s, my family and I were living in a mainly rural (at least by city dweller standards) valley in south central British Columbia.  The West Kootenay region is known for its diverse outdoor recreation activities and as a great place to raise a family.  It has a proud industrial history, evidenced through the longstanding pulp mill, a massive lead zinc smelter a few miles away and several hydroelectric dams, all of it within spitting distance of the mighty Columbia River. 

Read More


 

Product News

  • Prev
6 functions in one pair of pliers. Multifunctional pliers for the electrical installation; to grip ...
With the ABB StarTeck® selector web app you can match cables with Teck fittings quickly and easily. ...
WPS Gen 4 wall pack series is a classic and familiar design integrated with modern LED technology ...
These new controllers offer indoor or outdoor ON/OFF, photocell, dimming, scene and color tuning ...
Eaton’s broad selection of Wi-Fi smart devices offer reliability with unbeatable ease of setup. ...
Albeo® ABV3 luminaires can be ordered with an integrated Daintree Wireless WHS20 sensor for a range ...
Lumenpulse has announced the release of two additional smaller sizes of the Lumenquad, a ...
Milwaukee’s 2-Layer Face Mask is designed to be lightweight and breathable. This MILWAUKEE® face ...
Wiha Insulated SoftFinish® Cushion Grip Pliers and Cutters are the standard for premium quality ...
Ideal for rough service applications, the A19 & PAR Series are engineered for high efficiency, ...

 

Lumenquad New VersionsLumenpulse has announced the release of two additional smaller sizes of the Lumenquad, a rectilinear projector for both outdoor and indoor environments. Developed for architectural applications such as lighting landscapes, highlighting details, pathways and monuments, the Lumenquad Small and Medium are compact, low-wattage, high-performance projectors, complementing the two existing products in the family.

The Lumenquad Small and Medium are the latest additions to a family of sleek, elegant, high-performance projectors that has already been validated with honours, including recognition in the PIA Awards in 2019, together with a Lux Awards for Exterior Luminaire of the Year in 2019. 

Read More


 

 

Wiha Lineman's Pliers and CrimpersWiha Insulated SoftFinish® Cushion Grip Pliers and Cutters are the standard for premium quality featuring ergonomic cushion grip handles for comfort and control, dual durometer construction for long-lasting durability, and handles directly molded to the tool steel for a permanent bond.

The grips feature a slip guard handle design for added protection at the front-end and raised rear-finger steps for easy opening at the back-end. Wiha Insulated SoftFinish® Cushion Grip Pliers and Cutters consist of premium quality tool steel for strength and durability and induction hardened cutting edges and jaws for superior sharpness and longevity. 

Read More


 

 

eLumigen Poultry Lamps - 2000K, 3000K & 5000KIdeal for rough service applications, the A19 & PAR Series are engineered for high efficiency, vibration resistance, shatter-resistance, elevated heat environments, and wet locations. These dimmable LED Lamps help reduce energy costs, labor costs, and the headaches of frequent lamp changes in tough applications.

eLumigen employs a unique 21-point validation process that goes above and beyond industry standards. Our lamps have been tested to survive levels of vibration exceeding 20G forces. Our unique temperature foldback design improves both safety and thermal management of our lamps. 

Read More


 

Peers & Profiles

  • Prev
From small construction to sophisticated industrial projects, House of Electrical Supplies has been ...
Kyle Manfredi is the owner of ARK Electrical alongside his wife, Shannon. Operating out of ...
Like most major events over the last year, the COVID-19 pandemic put serious restrictions on the ...
This past December Jennifer Green was honoured with Canada’s Most Powerful Women Top 100 Award for ...
“It was quite surprising,” said Stephanie Smith of being named EHRC’s Leader of the Year. ...
As an advanced networked lighting controls company serving the industrial and large commercial ...
Trilliant, an international provider of utility solutions for advanced metering and smart grid ...
For more than a century, ABB has been investing in Canadian technologies and products to support ...
Mackenzie Gillan, a bright young lady from Baysville, Ontario, tells us about how she learned ...
Energy Efficient Lighting is a LED lighting manufacturer with nearly 30 years of industry ...


House of Electrical SuppliesFrom small construction to sophisticated industrial projects, House of Electrical Supplies has been servicing clients in the industrial, OEM, entertainment, and construction markets across the Greater Toronto Area for just over 40 years. The company has earned a reputation for providing a high-quality customer experience.

As per President Austin Brennan, their experienced and knowledgeable team can be depended upon in any situation to deliver quick and efficient service. On top of their product solutions — ranging from electrical, automation, safety, lighting and portable power distribution — 

Read More


 

Copper $US Dollar price per pound

Kerrwil Publications Great Place to Work. Certified December 2019 - December 2020

538 Elizabeth Street, Midland,Ontario, Canada L4R2A3 +1 705 527 7666
©2021 All rights reserved

Use of this Site constitutes acceptance of our Privacy Policy (effective 1.1.2016)
The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Kerrwil