Canadian Electrical Industry News Week

CSAApr 9, 2017

By William (Bill) Burr

In this article: Section 42 — Electric welders. 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. 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.

Rule 42-000 Scope — states that Section 42 is a supplementary or amendatory section of the code and applies to the installation of electric welders. The CEC Handbook provides additional notes and diagrams to better explain this section. There are two main types of welders: arc and resistance welders. Arc welders use a sacrificial rod to weld the metal target material together. Resistance welders fuse the metal target material together. Arc welders are divided further into transformer and motor-generator types.

Rule 42-002 Special terminology — contains definitions for special terms that apply to section 42 that are not defined in Section 0 such as: actual primary current, duty cycle, and rated primary current. These terms will be important when calculating the ampacity of the supply conductors for welders.

Rule 42-004 Receptacles and attachment plugs — outlines that, where receptacles are installed for the plug and cord-connection of a portable welder, the ampacity rating of the overcurrent protection for the circuit can be more than the rating of the receptacle, but the receptacle must have a rating equal to or greater than the ampacity of the supply conductors for the welder. This is important because the high instantaneous inrush start-up current of the welder will exceed the branch circuit conductor ampacity. This prevents nuisance tripping.

Transformer arc welders

Rule 42-006 Supply conductors — provides the factors in determining the ampacity of supply conductors for transformer type arc welders. The ampacity depends on the duty cycle of a single welder, as in sub-rule (1) and the demand factors where a group of welders are supplied by one circuit as in sub-rule (2). The CEC Handbook contains Tables 42-1 and 42-2, which show the correlation between duty cycle and demand factor and determination of the demand factor for multiple welder installations.

Rule 42-008 Overcurrent protection for transformer arc welders — specifies the factors to be used in calculating the rating of circuit overcurrent protection per the ampacity of supply conductors and welders as in sub-rule (1). Sub-rule (2) outlines the factors in calculating the rating of the overcurrent protection for the supply conductors using Tables 1,2,3, or 4. Sub-rule (3) provides the factors in calculating the rating of the overcurrent protection for a feeder supplying a group of transformer arc welders.

Rule 42-010 Disconnecting means — requires that where there is no integral disconnect on the welder, one must be provided to disconnect the supply conductors, and it must have sufficient current rating capacity to accommodate the overcurrent protection.

Motor-generator arc welders

Rule 42-012 Conductors, protection, and control of motor-generator arc welders — specifies that the rules of Section 4 and Section 28 generally apply to the determination of supply conductor ampacity, and selection of protection and control. The CEC handbook outlines methods of calculation of duty-related demand factors through Table 42-1, 42-2 and 42-3.

Resistance welders

Rule 42-014 Supply conductors for resistance welders — provides the factors in determining the ampacity of supply conductors depending on the primary current or duty cycle of either an individual seam resistance welder or an automatically fed resistance welder. Table 42-4 in the CEC Handbook shows the relationship between duty cycle and demand factors.

Rule 42-016 Overcurrent protection — specifies the factors in determining the rating of the overcurrent protection based on the rated primary current of the welder and the allowable ampacity of the supply conductors based on Tables 1,2,3 or 4. The CEC Handbook outlines methods of calculation of duty related demand factors through Tables 42-3 and 42-4. For determining the rating of overcurrent Protection for a group of resistance welders use the factors contained in rule 42-014.

Rule 42-018 Control of resistance welders — requires that a resistance welder have a disconnecting switch or circuit breaker rated for the capacity of the supply conductors to isolate the welder from the supply circuit.

Rule 42-020 Nameplate data for resistance welders — requires data specific to the resistance welder be provided on the nameplate, including rated KVA at 50% duty cycle, maximum and minimum open-circuit secondary voltage, short circuit current, and the throat and gap setting.

In the next installment, we will be discussing Section 44 — Theatre installations

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

** Note the CEC Handbook is also published by CSA.

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.


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

 

 

 The Evolution Series. Poke-Thru Devices, Floor, Wall and Ceiling Boxes 

Legrand Wiremold EvoFrom poke-thru devices to floor, wall and ceiling boxes, the Evolution Series has continued to increase device efficiency and reliability while providing durability and quality. Customizing your space and maximizing access to all the power, A/V and communications you could ever need. Evolution Series boxes bring power, communications and A/V to walls, floors and ceilings. Evolution adds flexibility, functionality and stylish good looks to every room you create when planning office buildings, airports, schools and hospitals.

 

 

Watch the video Here

 

Changing Scene

  • Prev
Global data cable, network and CCTV tester manufacturer IDEAL Networks has donated 26 testers to ...
Stanpro and Standard Products have officially completed their merger agreement announced in early ...
Prior to joining ABB in 2017 as Executive Vice President of the Electrification business, Deschenes ...
Susan Uthayakumar, country president, Schneider Electric, has been named a Women's Executive ...
ABB presented its electrification solutions that will allow customers to take full advantage of the ...
Electricity Human Resources Canada has introduced a new Board of Directors, effective as of their ...
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 ...

AVNET and Rockwell AutomationRockwell Automation announced that it has signed an agreement to acquire privately held Avnet Data Security, LTD, an Israeli-based cybersecurity provider with over 20 years of experience providing cybersecurity services. Avnet offers a full set of IT/OT cyber services and solutions ranging from assessments, penetration testing, network & security solutions, and training to converged IT/OT managed services.

“Avnet’s combination of service delivery, training, research, and managed services will enable us to service a much larger set of customers globally while also continuing to accelerate our portfolio development in this rapidly developing market,” said Frank Kulaszewicz...

Read More

 

 

 

Michelle BraniganWhile the time is always right to think about professional development and skills training, the new year marks a symbolic opportunity to make some career resolutions. Today’s evolving nature of work means that it’s likely workers will change jobs a few times over the course of their career, and emerging technologies in the workplace constantly require new skills and adaptability. With the federal government’s Canada Training Benefit (CTB) taking effect as of January 1, 2020, employers and workers across the country now have a flexible tool at their disposal when it comes to training and upskilling.

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
Professionals searching for a reliable voltage detection solution have two new Greenlee options — ...
The new generation of the Oslon Square Hyper Red with a wavelength of 660 nm is the flagship ...
Conceived for small to mid-sized data centers, ABB’s modular Conceptpower DPA 120 uninterruptible ...
The Bulletin 1609-B Industrial Uninterruptible Power Supplies feature the rugged industrial design ...
With the new SCT current converters, Beckhoff Automation completes the power measurement chain that ...
Eureka has announced the immediate availability of Cycle in super high output (SHO) and of Cycle XL ...
Eureka has released the Cliff luminaire. Ideal for illuminating exterior facades, entrances, yards ...
LEDtronics is proud to announce a new addition to their industry-leading offering of i ...
Littelfuse has announced the availibility of their Gate Drive Evaluation Platform (GDEV).   ...
Schneider Electric’s Square D brand has announced that its patented arc flash mitigation ...

 

Juna AIMeet Juno AI, a portfolio of lighting devices that form the “backbone” of your smart and connected space.The Juno AI Speaker Light with Alexa Built-In is an advanced LED downlight that features a JBL® speaker and Amazon Alexa voice service in a single patent pending ceiling light fixture. It’s a 6” downlight, but much, much more.

Juno AI takes advantage of the most ideal location in the home – the ceiling – to create a smart ecosystem. It can control any smart home device that works with Alexa. No hub required. It not only illuminates a room, but also locks the doors, adjusts your thermostat, tells your family dinner is ready, runs the vacuum, reads you a book, dims the lights, plays music through

Read More

 

 

Pathway ModularPathway Lighting has added the Modular Accents Series to their fixture offering. This collection of multiple-head recessed accent fixtures comes with a choice of one to four independently adjustable heads that deliver light only where needed and directing people’s attention to visual interests and focal points. Each head rotates 180 degrees and maintains its position with a friction-lock device and a 35 degree dual-axis tilt with a locking knob.  It has high-performance StellarGlo TIR optics delivering three beam distribution options ensuring superb cut-off, providing quiet ceilings and glare-free illumination. The architectural square heads are die-cast in aluminum and finished with a durable powder coat finish.  

Read More

 

Peers & Profiles

  • Prev
Headquartered in Vancouver, Legend Power Systems is a global onsite energy management technology ...
LDS caught up with General Manager of EiKO’s Canadian division, Stephen Lee who was kind enough ...
“I had an awesome time, it was a lot of fun,” said Zach Agombar, who competed his way to 8th place ...
Held from November 7th to 9th in Orlando, Florida, and recently aired on ESPN 2, the Ideal National ...
Panel Upgrade Experts is an electrical contracting company started seven years ago by Paul ...
Chad Alexander is a Branch Manager with Contact Automation, which provides automation integration ...
Rob Milner is the Canadian National Science, Automation, Optical Gas Imaging & sUAS Manager for ...
EIN sat down with WiRE President & CEO Joanna Osawe to learn more about WiRE and the ...
For the second consecutive year, Paul Hannania was among the 162 professionals and apprentices to ...
Alexander Couckuyt, Director of Operations for Southwire Canada, spent the majority of his ...

 

Brett Castein and Jordan PrattBy Blake Marchand

Held from November 7th to 9th in Orlando, Florida, and recently aired on ESPN 2, the Ideal National Championships gives electricians a chance to display their skills in a high-level competition. The event expanded internationally for the first time this year — over 55,000 electricians from 5 countries attempted to qualify for a chance to compete in the championship event. Last year’s event was the first to feature electricians from outside the United States. For 2019 they increased the number of Canadian qualifiers, and extended the competition to Mexico, Australia and China.

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
©2020 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