Canadian Electrical Industry News Week

May 3 2016

William (Bill) Burr

In this article: CE code Section 20 — Locations in which corrosive liquids, vapours, or excessive moisture are likely to be present. The code is a comprehensive document. Sometimes it can seem 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. This is not intended to replace the notes in Appendix B or the explanations of individual requirements contained in the CEC Handbook, but will provide some help in navigating the code.

General

Section 22 amends or supplements the general requirements of the code. It provides specific rules for locations classified as Category 1 (moisture) or Category 2 (corrosive) environments that are sufficient enough to interfere with the normal operation of electrical equipment.

A Category 1 location is defined as one where moisture in the form of vapour or liquid is present. The moisture can be caused by condensation, dripping or splashing of liquid, or other means. A Category 2 location is defined as one where corrosive liquids or vapours are likely to be present. Where neither Category is mentioned in a rule in this section, then the rule applies to both categories. Appendix B contains examples of Category 1 and 2 occupancies.

Equipment

As per rule 22-100, only equipment that is essential to the process being carried out in that area may be located in a Category 1 or 2 location. Service equipment, motors, panelboards, switchboards and similar equipment need to be installed outside the category area. This includes any enclosures containing moulded case circuit breakers in a Category 2 location unless they have been approved and marked as suitable for that application, because internal corrosion can occur.

Rules 22-102 (1) to (6) outline the types of construction required of equipment to be installed in the various moist or corrosive atmospheres. This information is marked on the equipment if not self-evident.

Rules 22-104 to 22-108 specify requirements for pendent lamp holders, luminaires, receptacles, plugs, and portable cords to be installed or used in Category 1 or Category 2 locations.

Wiring

Rule 22-200 provides the requirements for wiring in Category 1 locations. Generally conductors must be selected in accordance with rule 4-008(1) and table 19. Note that NM cable must be NMU or NMWU, MI cable must be spaced 6mm from any wall at supports, and aluminum conductors must have joints adequately sealed against moisture.

Rule 22-202 provides the requirements for wiring in Category 2 locations. All conductors must have protection from corrosion. NMW and NMWU cable is permitted. Raceways, conductors and cables may only be used as permitted by Table 19. MI, alu-sheathed and copper-sheathed cable must be suitably corrosion protected. Any termination or joint of aluminum conductors must be adequately sealed against ingress of corrosive liquids or vapours.

Rule 22-204 outlines the appropriate wiring methods in buildings housing livestock or poultry. Again generally, these are wet or damp locations and all wiring must be selected in accordance with rule 4-008(1), with consideration given to adequate ventilation for a damp location. NMW or NMWU cable may be used, but aluminum conductors may not, and NMS cable must be provided with mechanical protection against damage by rodents.

Rule 22-206 deals with wiring in curling and skating rinks. Generally, lighting areas are subject to condensation so wiring must be selected in accordance with Rule 4-008(1) and Table 19 for wet locations. Other areas may be wired in accordance with Section 12 observing any moisture conditions. Areas with adequate mechanical ventilation (at least three changes per hour) may be considered dry locations.

Drainage, sealing, and exclusion of moisture and corrosive vapour

Rules 22-300 and 22-302 specify methods for excluding moisture and corrosive vapours from entering conduit, cables, equipment or locations through the use of approved fittings, drip loops, adequate drainage, sealing, and orientation.

Circuit control

Rule 22-400 requires that each circuit in a Category 1 or 2 location must be capable of being de-energized from outside the location.

Materials

Rule 22-500 specifies that all metal materials including conduit, enclosures, and even every nut bolt and screw must be corrosion protected or resistant to the specific corrosive environment.

Bonding

Rule 22-600 requires all non-current carrying metal parts of equipment to be bonded to ground as per Section 10.

Sewage lift and treatment plants

Rules 22-700 to 22-710 apply to installations in sewage lift, pumping stations and treatment plants where moisture, corrosion, explosions, fire and atmospheric poisoning can occur. Note that the rules of Section 18 apply to associated methane gas generating facilities.

Rule 22-702 outlines some special terminology used in this subsection to define continuous positive pressure ventilation, dry well, suitably cut off, and wet well.

Rule 22-704 provides guidelines for the classification of these types of areas that may be both Category 1 or 2, and hazardous locations under Section 18. Reference material for hazardous area classification can be found in NFPA 820. Appendix B also has some notes regarding safety issues in these types of facilities.

Rule 22-706 specifies that wiring methods in these types of areas shall be in accordance with Rules 22-200, 22-202 or Section 18 depending on the location classification. Note that there are some restrictions, conditions and special handling for metal conduit, tubing, armoured cable, mineral-insulated cable, aluminum sheathed cable, and copper-sheathed cable.

Electrical equipment

Rule 22-708 specifies that electrical equipment in these types of areas shall be in accordance with the other applicable sections of the code or Section 18, depending on the location classification. Note that there are some restrictions, conditions and special handling for receptacles, lighting switches, unit emergency lighting equipment, emergency lighting control units, heating equipment, motors, and any electrical equipment in a wet well. Also note in sub-rule 22-708(4) that ventilation fans shall not be located in a wet well. One other significant sub-rule, 22-708(5), requires that areas provided with continuous positive ventilation must be interlocked to de-energize all electrical equipment if the ventilating equipment becomes inoperative, unless the electrical equipment in that area is approved for a Class 1 hazardous location.

Rule 22-710 requires all structural steel below ground, in contact with earth to be bonded to the system ground.

In the next instalment we will be discussing Section 24 — Patient care areas.

* The source for this series of articles is the Canadian Electrical Code, Part I, published by CSA


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
Part 12: Guide to the Canadian Electrical Code, Part 1 — Instalment 12
Part 13: Guide to the Canadian Electrical Code, Part 1 — Instalment 13 
Part 14: Guide to the Canadian Electrical Code, Part 1 — Instalment 14
Part 15: Guide to the Canadian Electrical Code, Part I — Instalment 15


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
  In the context of the energy transition currently unfolding where reducing greenhouse gas ...
  Nova Scotia Power plans to put the power in our customers’ hands by introducing ...
  Ontario's soaring electricity bills have driven numerous factories out of the province ...
CSA Group has announced that Shawn Paulsen, Manager of Conformity Assessment, CSA Group, has been ...
For the fifth consecutive year, Rittal Systems Ltd., is being certified as a Great Workplace ...
  A contract worker received an electrical shock after coming into direct contact with ...
  Rittal Systems has announced Franklin Empire has joined its distribution/partner network ...
  FortWhyte Alive is unveiling the largest solar installation in the City of Winnipeg. ...
  In partnership with TM4 Inc. and Cummins Inc., STL recently announced plans to test two ...
  Several media outlets and analysts recently published statistics about the number of ...

Irwin Beron RAB Design has announced the retirement of President, Irwin Beron.  After 50 years in the lighting industry, Irwin has decided to step down as President and hand over the reins to his eldest son, David Beron.  David will assume the position of President, effective immediately.  Irwin will remain on as Chairman, which will allow him to enjoy some well-deserved rest and relaxation with his lovely wife Lynette and seven grandchildren, yet still free to impart his many years of experience and expertise whenever possible as Chairman of RAB Design. Irwin has been serving as President of RAB Design Lighting since 2002.  He acquired the company during a difficult period and through grit, determination and hard work, turned it around to make it one of Canada’s most respected lighting companies.

 

Read More: Irwin Beron Retires as President of RAB Design... 

 

 

 

Electricians Provide Assistance in TD Centre's 50th Anniversary Illumination Project

Contractors Guild, Ainsworth, Symtech, Plan and ACML donated their services to temporarily reconfigure the buildings' automated lighting systems, while a crew of staff and volunteers worked to open and close blinds on over 6,000 windows across the TD Centre's five towers to create the message "Less is more or" in 100-foot-tall lights.

A media statement called it the largest public art project of its kind undertaken anywhere in the world.

Read more: Electricians Provide Assistance...

 

Codes and Regulations Brought to You by the CSA Group

  • Prev
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 ...

CSA

 

By William (Bill) Burr

In this article: Section 56 — Optical fibre cables. Section 56 is a supplementary or amendatory section of the code and applies to the installation of optical fibre cables in conjunction with all other electrical systems. Rule 56-002 provides a special terminology definition for an Optical Fibre Cable — a cable consisting of one or more optical fibres that transmits modulated light for the purpose of control, signalling or communications.

Rule 56-102 outlines that there are three types of optical fibre cables.



Tools for the Trade

  • Prev
  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 ...
  This new lock box is ideal for group lockout situations with multiple isolation points ...
  Greenlee has taken their standard storage boxes to the next level with the limited ...
  The SureTest circuit analyzers "look behind walls" to identify wiring problems that can ...
  The Ideal Dispenser is equipped with high-quality adhesive and 3 mil thickness that ...
  The Adjustable cable stripping tool has an intuitive blade design that allows users to ...
  The SIMpull CoilPAK completes the SIMpull Circuit Management System, taking heavy, ...
  The Javelin is a new product that makes drilling holes through stud walls easier. ...

Product News

  • Prev
  Liteline's LUNA is engineered for maximum heat dissipation and eliminates the need ...
Magic Lite 2013 Ltd. has announced a new selection of decorative lighting options for a multitude ...
  Arlington’s recessed In Box Cover Kits offer the best way to install a receptacle ...
  Arlington’s Countertop box kits with round plastic boxes and brass or nickel-plated ...
  Arlington’s new FLBC4502 4.5" non-metallic concrete floor box has six conduit ...
  Designed for time-savings and a neat, flush installation, Arlington’s DROP IN ...
  Arlington’s non-metallic Mutli Purpose Box is the labor-saving solution to ...
Standard's LSHOP series is an integrated solution for quick and easy installation; no wiring ...
  LUBO Lighting International Inc. has a new generation of outdoor lighting fixtures with a ...
  Arlington's Bare Wire Ground Clamp is made of solid brass with brass screws that is easy ...

 

Peers & Profiles

  • Prev
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 ...
  Most of us have a difficult enough time managing one job and a home life. However, some ...
  Since 2012 Barnstormer has advanced the abilities of their brewery with the installation ...
  Electrical Industry Canada was recently given the unique opportunity to see ...
  Vickery Electric has been providing electrical services to the Whitby area since 1923, ...
Safety standards in the electrical industry are constantly evolving, which requires that ...
Newman Electric was founded in 1995 and has established itself as a leading electrical contractor ...

Copper $US Dollar price per pound

Gordon M

 Gordon MacDonald is a cheerful, driven individual who loves to be challenged, a trait that suits him well as a lighting specialist overseeing retrofit projects for Rexel in New Brunswick and P.E.I. He also has had a unique introduction to the field he now works in. 

Gordon was born and raised in Moncton, New Brunswick and has lived there for most of his life. He has an incredibly busy home life that extends to his children, stepchildren and grandchildren. Beyond family life he enjoys “playing guitar and piano, going target shooting, cooking BBQ, trying new foods and learning new things.”

How One Hospital Is Improving Patient Care with Advanced Analytics Demand for healthcare is outstripping capacity, but Toronto’s Humber River Hospital has a solution: a digital Command Centre powered by GE’s Wall of Analytics. As populations grow and age, many hospitals are being stretched past their limits. Rather than apply temporary or partial fixes to address the challenges that underlie this busy, acute care hospital, Toronto’s Humber River Hospital has chosen to implement a holistic, state-of-the-art hospital command centre that will enable it to achieve radical gains in quality and efficiency.

The hospital partnered with GE Healthcare Partners to conceive, design and build the new 4,500 square-foot command centre, a cornerstone of which will be GE’s Wall of Analytics that processes real-time data from multiple source systems across the hospital.

Read more: How One Hospital is ...

 

Kerrwil Publications

538 Elizabeth Street, Midland,Ontario, Canada L4R2A3 +1 705 527 7666
2016 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