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.

 

 

 

 

 

 Cablofil® Wire Mesh Cable Tray - The Conduit Alternative 

Legrand CablofilAs the safest, easiest-to-install alternative to labor-intensive conduit, wire mesh cable management tray has been the most widely adopted wiring support method for 40 years. Electrical contractors continue to rely on tried-and-tested, code-compliant cable tray for all of their installations, including those in some of the world’s harshest environments.

5 ways Cablofil beats conduit: 1. Fewer parts 2. All you need is a bolt cutter 3. Adopts to any installation 4. One person can usually install a whole system 5. Sweeps and bends can be formed on site. 

 

 

Watch the video HERE..

 

Changing Scene

  • Prev
Jacques Fiset, the new president of the EFC Quebec section, told us in a recent interview that his ...
Organised by the Hong Kong Trade Development Council (HKTDC), the twin lighting shows - the  ...
A Friday night, the end of summer, the weather is mild, and 2,500 people — customers, ...
Eaton focuses on developing personable connections in every aspect. In September, our team will be ...
During the recently held IMARK Canada 2019 meeting in Niagara Falls, executives from 14 of the ...
Valard has been selected by Wataynikaneyap Power LPto provide engineering, procurement ...
The Canadian Apprenticeship Forum-Forum Canadien sur l’Apprentissage (CAF-FCA) has announced ...
Electricity Human Resources Canada has announced this year's keynote speakers for Agents of Change ...
Kiashke Zaaging Anishinaabek (KZA)/Gull Bay First Nation (GBFN) and Ontario Power Generation (OPG) ...
The BCEA's Woman's Network THRIVE Summit is taking place on October 4th at the Executive Inn ...

Green PlugndriveThe Government of Quebec, Ingka Group (IKEA), City of Madison and several other industry and organization innovators have pledged to join CALSTART’s Global Commercial Vehicle Drive to Zero (Drive to Zero) program. 

“By joining the Drive to Zero pledge, Québec is committing to share its transportation electrification knowledge and expertise and coordinate its efforts with those of all partners to make zero-emission technology commercially viable by 2025 in the heavy vehicle sector...

 

Read More

 

 

 

Signify“Another year of record heat waves, fires in the Amazon and Siberia, and the ice caps at their smallest for centuries. The time for debate is over – now it’s time to take urgent action,” said Eric Rondolat, CEO of Signify, who spoke during the opening ceremony of Climate Week New York City.

According to Rondolat, governments worldwide need to help realize a carbon neutral world by 2050 at the latest with companies committing to a more aggressive target of 2030. When it comes to what he described as the “low-hanging fruit of energy saving actions,” Rondolat calls for the following commitments:

Read More

 

 

Codes and Regulations Brought to You by the CSA Group

  • Prev
The Code is a comprehensive document. Sometimes it can seem quite daunting to quickly find the ...
The Code is a comprehensive document. Sometimes it can seem quite daunting to quickly find the ...
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 ...

 

Flir Application SpotlightWithout power, factory operations cannot continue. That’s why regular scheduled maintenance is important to ensure your electrical distribution system is in working order. A combination of a thermal imager and a clamp meter can help you detect hot spots and diagnose electrical issues at the point of failure before an outage occurs, quickly and safely.  Download the Application Spotlight today.

 

 

 

 

 

Read More  

 

3M WebinarRegister for 3M Canada’s upcoming webinar: How TTS™ Heat Trace Cables can help you on site.

3M Canada will be hosting a heat trace cables webinar, where you’ll learn about heat trace, heat trace applications (i.e.: pipe freeze protection, roof and gutter, and surface snow and ice melting), and the benefits of self-regulating heat trace cables—TTS™ Heat Trace Cables.

Self-regulating heat trace cables can adjust their output to the surrounding temperature down the cable length.

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 SYLVANIA ValueLED UFO High Bay is a DLC Premium LED fixture that has a lightweight, impact ...
Power Integrations announced new high-power-density members of ...
Tray portrays a picture frame design. The intention was to evoke the idea of empty picture frames, ...
Magic Lite introduces the next generation of their hugely successful LED Brick ...
The adorne Collection has expanded their line of designer switches and outlets to now come in the ...
Remee Wire & Cable, a leading manufacturer of electronic wire and cable, announces its new line ...
Remee Wire & Cable, a leading manufacturer of electronic wire and cable, announces new ...
The new CU81xx uninterruptible power supply (UPS) series is designed for universal use in the ...
The GRV-TEX-26F6 cable provides neat, protected wiring from the terminal connector of a groov ...
Eaton announced its latest release of the XLR-51 supercapacitor module.     ...

 

LYTSwitch DriversPower Integrations announced new high-power-density members of its LYTSwitch™-6 family of safety-isolated LED-driver ICs for smart-lighting applications. The new ICs with PowiGaN™ technology enable designs that deliver up to 110 W with 94% conversion efficiency using a simple, flexible flyback topology.

The high efficiency of the new LYTSwitch-6 ICs eliminates the need for heatsinks – greatly reducing ballast size, weight and cooling airflow requirements. The 750 V PowiGaN primary switches provide very low RDS(ON) and reduced switching losses. 

 

Read More

 

 

Peers & Profiles

  • Prev
Electrical Industry Canada had the pleasure of interviewing Matt Davis of Newfoundland Power, ...
An electrician by trade, Daniel Lacovetsky is the founder and President of Powertec Electric, an ...
Mike Morneau began his professional career in graphic arts after earning a Bachelor of Technology ...
AimLite offers a vast choice of lighting lines to facilitate any lighting project’s needs. ...
John Krill has been in the energy and construction industries for 35-years, now he serves as Canem ...
Ali Heighton is the Program Coordinator for IBEW Local 37 who has found success as a young ...
Flextherm was founded in 1991 by current company President, Philippe Charron. For more than 25 ...
Ouellet Electric Heating began humbly in 1960 with Charles-Emile Ouellet, who started manufacturing ...
Justin Harris is a Programmer/Electrician for COREngineering, a New Brunswick based mechanical ...
Bill Maki is an Electrical Engineer from Thunder Bay, Ontario working as a Control Systems ...

Copper $US Dollar price per pound

Kerrwil Publications

538 Elizabeth Street, Midland,Ontario, Canada L4R2A3 +1 705 527 7666
©2019 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