Canadian Electrical Industry News Week

Electrical Code Changes Pierre McDonald

This is the second of two parts. The first part appeared in the August 26 issue of EIN.  

In continuing with the theme to provide insight into the changes that will appear in the 2015 Canadian Electrical Code (CE Code), I would like to focus on the addition of rules for the IEC Zone method of area classification for environments containing dusts. 

If you recall it was the 1998 CE Code that saw the introduction of the zone area classifications for explosive gas atmospheres. The introduction of Zone 0, Zone 1 and Zone 2 resulted in many questions with respect to markings and how those markings should be interpreted. After all, the industry was familiar with the division system of marking, which instructed the code user on where the equipment was allowed to be installed as opposed to the IEC system, which was marked with the types of protection used, and it was up to the code user to determine in which location the equipment could be installed based on the types of protection. 

The main reason for proceeding with these changes was to continue the harmonization efforts between CE Code Section 18 and the IEC Zone method of area classification and associated installation practices. Adopting these rules and methods of classification should also remove trade barriers and open equipment selection options for industry across Canada. 

In the latest change, Section 18 will see the introduction of Zones 20, 21 and 22 to replace the division system of area classification for dusts, fibres and flyings (Class II and Class III). Zones 20, 21 and 22 are the IEC designations for hazardous locations involving dusts. Existing CE Code requirements associated with Class II and Class III locations have been moved into Appendix J. This move will retain the rules for the division system of area classification (flammable gases, dust, fibres and flyings) together in one appendix to accommodate legacy installations. 

Specific terminology has been defined to assist the code user with the new requirements and to align with Canadian adoption of the IEC 60079 series of standards. The term “dust” is used as a generic term and includes both combustible dust and combustible fibers. Both terms “combustible dust” and “combustible fibers” are further defined based on particle size (dust being 500 μm or smaller and fibre being greater than 500 μm), which allows combustible dust to present a fire or explosion hazard when dispersed and ignited in air while combustible fibres may be suspended in air and could settle out of the atmosphere under their own weigh. Combustible dust also includes definitions for “conductive” and “non-conductive” dust as one being combustible metal dust and the other being combustible dust other than combustible metal dust.

“Equipment Protection Level (EPL)” is also defined in the new 2015 edition CE Code. This term was first introduced in the 2012 edition CE Code in Rule 18-052 and was explained in the Appendix B note to that rule. EPLs are required marking for any hazardous location electrical equipment certified to the IEC 60079 series of standards adopted in Canada in 2011. EPL is the level of protection assigned to electrical equipment based on its likelihood of becoming a source of ignition. EPL marking for electrical equipment suitable for explosive dust atmospheres are “Da”, “Db” and “Dc.”

EPL Da is marked on equipment having a very high level of protection. This equipment is not expected to be a source of ignition during normal and abnormal operation. Abnormal operation for EPL Da equipment includes expected malfunctions and rare malfunctions.

EPL Db is marked on equipment having a high level of protection. This equipment is not expected to be a source of ignition during normal and expected malfunctions.

EPL Dc is marked on equipment having an enhanced level of protection. While this equipment is not expected to be a source of ignition during normal operation, it may have additional protection associated with it to ensure that it does not become a source of ignition during expected malfunctions. 

The last definitions that need to be reviewed are those providing insight into what makes up Zones 20, 21 and 22 locations. If you are familiar with the zone descriptions associated with explosive gas environments (Class 1), the same reasoning is used for dust environments:

• Zone 20 locations — clouds of dust exist in the air, forming an explosive dust atmosphere frequently or for long periods of time 

 •Zone 22 locations — clouds of dust exist in the air forming an explosive dust atmosphere during normal operation occasionally

• Zone 22 locations — clouds of dust exist in the air forming an explosive dust atmosphere that is not likely to occur during normal operation and if it does will only persist for a short time

With the above definitions in place, rules can be established for equipment, wring methods and sealing for all three zones. There is no need for specific requirements for receptacles, luminaires, transformers, etc. in these locations as all the equipment should have markings associated with the IEC requirements. For example, in a Zone 20 location, it is recommended that electrical equipment not be installed within the environment. If it must, then it shall be suitable for Class II, Division 1 locations; or provide EPL “Da”; or provide one or more of the following protection level, intrinsically safe type “ia”; encapsulation “ma”; or protection by enclosure “ta”. 

Wiring methods allow for Rigid Metal Conduit and “HL” Cables. Provisions are also provided for equipment that requires a flexible connection (liquid-tight flexible conduit with fittings suitable for the application, or extra-hard-usage flexible cord and cable glands suitable for the application). Seals are required to ensure dust does not enter enclosures that are required to be dust tight, and there are a few methods available to the code user outside of an actual permanent and effective seal. For Zone 21 locations, the list of equipment that can be installed is expanded to include Zone 20 markings as well as anything marked EPL Db, or equipment that provides one or more of the following protection levels, intrinsically safe type “ia” or “ib”; encapsulation “ma” or “mb”; or protection by enclosure “ta” or “tb”; or pressurized enclosure “pxb” or “pyb”. It is clear that as the likelihood of a hazard is reduced the options available for equipment and wiring methods increase, also evident by the requirements for Zone 22. 

For the purpose of this article I’ve simplified the requirements mandated for Zone 20, 21 and 22 locations in the previous paragraph. As the industry has had to deal with changes to IEC methods back in 1998, these should not pose as much of a shock. I really believe code users will have no problems initiating these changes when their prospective jurisdictions adopt the 2015 CE Code.


 

Pierre McDonald, CET, is Senior Regulatory Affairs Representative/Répresentant Principal, Affaires Réglementaires, Underwriters Laboratories of Canada Inc. Based in St. Albert, AB, Pierre has been a member of the Canadian Electrical Code Part 1 technical committee as well as several subcommittees including serving as Chair of Sections 6 and 76 and as a member representing regulators on several other CSA committees. Pierre is still active with code development and interpretation.

 

Changing Scene

  • Prev
  Southwire Canada (SWC) has been named Supplier of the Year by Grote Industries, one of ...
  Techspan Industries is please to announce that Scott Lucas has taken over as VP Sales ...
Joshua Remigio, 29, of Leamington, Ontario was electrocuted last week while working on the property ...
O’Neil Electric Supply is very pleased to announce the addition of Siemens Canada EM LP as ...
Fluke is celebrating its 70th anniversary by giving away a prize package valued at US$6,000. Prizes ...
This past summer, from July 1 to September 15, AD Rewards ran the Redeem for a Dream promotion.
  Rittal Systems Canada, the world’s largest and most trusted manufacturer of ...
Learn about the latest trends in structured cabling. Offered by Fluke Networks, this seminar will ...
  After a decade of creating affordable, energy-efficient LED Lighting exclusively for the ...
Effective January 1, 2019, Ramy Yousif assumes the position of Rexel Atlantic’s General ...

Electrician Forum Brought to you by Schneider Electric

As industry experts you know the products you use everyday better than anyone and should have input on what information you receive about products and what could improve them.

Therefore, we want your insight on the biggest challenges or issues you face when installing loadcentres, breakers (CAFI, GFI's…) and other surge protection devices. We ask that you do not provide product specific details but rather your general issues and concerns or any questions that have come to mind while working with these product types. Provide us with your valued expert insight into the issues you have faced so manufacturers can better inform you about the installation and use of these products. Lets generate some discussion that will help guide the Industry.

Make your comments  HERE

 

Codes and Regulations Brought to You by the CSA Group

  • Prev
In this article: Tables — Part B. This section of the Code contains 99 tables of essential ...
In this article: Section 58 — Passenger Ropeways and Similar Equipment. Rule 58-000 ...
  Unauthorized CSA Group certification marks have been found on wiring by Triumph Cable ...
In this article: Section 52 — Diagnostic imaging installations. The CE code is a ...
In this article: Section 46 — Emergency Power Supply, Unit Equipment, Exit Signs, and ...
  In this article: Section 44 — Theatre Installations. The CE Code is a ...
CSA has published C22.2 No. 60947-7-3, the harmonized standard for low-voltage switchgear and ...
  Electric welders. The CE Code is a comprehensive document. Sometimes it can seem ...
  In this article: Section 40 — Electric cranes and hoists. The CE Code is a ...

 

Cloud

There has been a lot of talk about cloud computing and Software-as-a-Service (SaaS) models these days but both are relatively new to the lighting industry. Let’s take a look at what they are as well as their roles in commercial lighting.

What is cloud computing?

Cloud computing is the on-demand delivery of compute power, database storage, and applications via the Internet with pay-as-you-go or subscription-based pricing. Cloud computing means that instead of all the computer hardware, software, and data that you are using sitting somewhere inside your company’s network, it’s provided and managed for you as a service by another company and you access it over the Internet. 

Read More



Tools for the Trade

  • Prev
  IDEAL Industries has introduced Combination Drill Taps to its tool lineup. Combining the ...
  Stripping and crimping device, 100 - 240 V input voltage, for insulated ferrules with a ...
Professional all-in-one cutter/stripper for coaxial and twisted pair cables     ...
  Klein Tools' Coax Explorrer 2 tests coaxial cable and maps up to 4 locations   ...
  Ideal Industries' T-14 wire stripper s are ideal for all professionals working within the ...
  The ATS850 conveyor eliminates all types of electro static discharge requirements. ...
  Lorik Tool & Automation has the experience and ability to manufacture a variety of ...
  Ideal Industries' 26 piece insulated Journeyman kit is ideal for new electricians or for ...
  Klein Tools Deluxe Fish Rod Set comes in 19 pieces that when assembled can fish wire and ...
  BendWorks Software was designed to help electrical contractors adopt this new process ...

Product News

  • Prev
The CoreLine Downlight range of recessed luminaires is designed to replace CFL-ni/CFL-i based ...
Banvil2000's lineup of superior LED High Bay Fixtures are uniquely designed to maximize efficiency, ...
The Ceiling Mounted Occupancy Sensor is wireless and self-powered making them one of the most ...
Enables users to dim or turn on/off buildings, entire spaces, zones within spaces or individual ...
SmartRay’s SmartLight LED Module for Ceiling Plate is an innovative light module that ...
The RS is designed to compete and outperform with 400 Watt Metal Halide and High-Pressure Sodium ...
Philips wireless occupancy sensor and multi sensor, which are Interact Ready, mean easy upgrade to ...
Empower your facility managers to integrate lighting controls into the MACH-System using the ...
Kason 1901A Motion Sensor saves energy and meets federal energy regulations. Passive infrared ...
Unlike the old passive motion switches popularized in the past 20 years that react to random ...

 

Peers & Profiles

  • Prev
Allison Wood and Dominique Rivet are two apprentices who had a wealth of career options available ...
  In a recent sit-down Electrical Industry Canada was able to learn a little ...
David Johns is a unique and dedicated individual both at home and in the workplace. At home he is a ...
    Sean Freeman is a vibrant, enthusiastic and selfless individual who has taken his ...
  Automation companies are drivers of innovation, and have penetrated near every industry ...
Total Electrical Solutions was founded in 2013 by Jeremy Herrington in Quispamsis, on the outskirts ...
Andrew MacLeod is a territory sales manager with Leviton Manufacturing of Canada in British ...
  Floyd Lau founded Amptek Technologies in 2002 as an end to end engineering design ...
Mike Marsh, President and CEO of SaskPower, has been a leading figure in Saskatchewan’s ...
Gordon MacDonald is a cheerful, driven individual who loves to be challenged, a trait that suits ...

Copper $US Dollar price per pound


 

Jean-Marc Myette

By Line Goyette

Meeting people in our industry often comes with surprises. This was the case with Jean-Marc Myette, Business Development Manager of ABB’s Electrification Products Division and chair of the Board of Electro-Federation Canada’s Quebec section. Not only does he know the electrical industry down to the most minute product and technological innovations, he is also a professional car racer on sabbatical, and someone very involved in his business community and personal life.

Read More

 

 

Kerrwil Publications

538 Elizabeth Street, Midland,Ontario, Canada L4R2A3 +1 705 527 7666
©2018 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