Canadian Electrical Industry News Week

 

July 9, 2017

Bill BurrIn this article: Section 52 — Diagnostic imaging installations. 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 52-000 Scope states that Section 52 is a supplementary or amendatory section of the code and applies to the installation of X-ray and other diagnostic imaging equipment operating at any frequency, but does not provide any specifications for safeguards against radiation. Information on radiation safeguards is contained in the series of Health Canada Safety Codes for radiation protection. The CSA CEC Handbook provides additional explanations and tables.

Rule 52-002 provides some special terminology for this section, and defines momentary and long-term ratings of 20 seconds and 5 minutes respectively for operation of applied x-ray and computerized tomography equipment.

Rule 52-004 provides guidelines for guarding of high-voltage parts, and requires that high-voltage parts be contained within bonded to ground metal enclosures, or within separate rooms or enclosures where a circuit control switch controlling the diagnostic imaging equipment is interlocked, to be open when the door is open and unlocked, and be insulated from the enclosure. In addition, high-voltage circuit conductors must be of the shockproof type. If a milliammeter is provided, it must be either connected in the bonded-to-ground circuit conductor, or guarded, if connected in the high-voltage conductor.

Rule 52-006 permits mobile diagnostic equipment, and permanently connected diagnostic equipment on a 30 amp or less branch circuit, to be supplied with a plug and hard-usage cable or cord.

Rule 52-008 specifies that a disconnect must be placed in the supply circuit in a location accessible from the radiation control of the diagnostic equipment. The rating of the disconnect for X-ray or computerized tomography equipment is based on 100% of the power input required for the long-time rating of the equipment, or 50% of the power input required for the momentary rating of the equipment, whichever is greater. For equipment on a 120volt, 30amp circuit, the required disconnect may be a receptacle and plug of the appropriate size.

Rule 52-010 exempts transformers and capacitors, forming part of diagnostic imaging equipment, from the requirements of Section 26. This equipment must comply with the CEC Part II product standard for the equipment. Capacitors must be provided with a means for automatically discharging and grounding the plates when the supply is disconnected. This is not required if the current-carrying parts of the capacitors and conductors are located 2.5 meters or more above the floor and accessible to only authorized persons, or, if located within 2.5 meters of the floor, within

• metal enclosures that are bonded to ground, or
• enclosures of insulating material

Rule 52-012 provides for protection where step-up transformers are used for diagnostic equipment. The low-voltage circuit of the step-up transformer is required to have an overcurrent device with no exposed live parts, installed as part of or adjacent to the equipment that protects the high-voltage radiographic circuit from all fault conditions. Where the above overcurrent device is too large to protect other fluoroscopic or therapeutic circuits on the equipment, additional overcurrent protection needs to be installed to protect these circuits. In the case of portable equipment, the above requirements also apply. However, an exemption can be applied if all high-voltage parts are enclosed in a single metal enclosure, bonded to ground. Where more than one apparatus is supplied by a common high-voltage source, other switches must be installed to independently disconnect each apparatus from the high-voltage source.
Rule 52-014 reiterates that all non-current-carrying parts of apparatus, including ancillary equipment, must be bonded to ground in accordance with the requirements of Section 10.

Rule 52-016 provides the requirements for determining ampacity of supply conductors and rating of overcurrent protection for diagnostic imaging equipment. For a single piece of equipment, use the larger of

• the long-time current rating of the equipment, or
• 50% of the momentary current-rating required on a radiographic setting

Note that this information is contained on the equipment faceplate.

Where more than one piece of diagnostic equipment is supplied, the rating of the supply conductors and overcurrent device is based on

• the sum of the long time current ratings of all the equipment supplied by the circuit, or
• Tthe sum of 50% of the maximum momentary current rating for the two largest units supplied, plus 20% of the maximum momentary current rating of the other units, when the equipment is on a radiographic setting

In the next installment, we will be discussing Section 54 — Community antenna distribution and radio and television 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.

Changing Scene

  • Prev
Government Relations Minister Lori Carr announced the transfer of gas and electrical licensing ...
IDEAL continues to recognize the essential work electricians are doing during this global crisis. ...
Total investment in building construction increased 60.1% to $13.4 billion in May, ...
IDEAL Industries recently put together a new supply catalogue focused on panel builders and ...
ECAO is piloting a young leaders group, named Future Leaders Advisory Council (FLAC).   ...
Cooper Lighting extends its commitment to education and support of its customers and specifiers. ...
Stay Wired to Win is a monthly at-home challenge designed to keep your competitive spark going ...
Join the Electrical Contractors Association of Ontario (ECAO) for a live webinar on July 7 at 2:00 ...
Following the latest COVID-19 announcements from the Ontario Government, ESA has decided to ...
Introducing Stay Wired to Win – a series of monthly at-home challenges designed to keep your ...


 

LDS Aug Products Eaton AL Series Dimmers 400Eaton's Wiring Devices AL series dimmers offer a versatile option for any dimming application - fine tune the dimming performance to match your exact needs and change colors as needed to suit any décor.

Color change kits come with three color faceplates, offering design flexibility within one product. Select models are available in 4 different color combination packs.

 

 


Read More

 

ESAAs the government continues a gradual, staged approach to reopen Ontario, ESA is assessing how they can safely resume in-person classroom training while adhering to Ontario Public Health guidelines. ESA is continuing to monitor key public health indicators and Stage 3 restrictions as efforts begin to reschedule previously postponed in-person classroom courses.

If you are registered in a postponed ESA course, they will notify you in the next couple of weeks of the rescheduled date. Please note that online courses are continuing as scheduled.

 

Read More

 


 

Latest Articles

  • Prev
The code is a comprehensive document. Sometimes, it can seem quite daunting to quickly find the ...
As a direct consequence of the economic shutdown due to COVID-19, parents have been asked to ...
Pro Electric LLC had a customer that had just constructed a new horse barn and was looking to light ...
Appearing below is a fact sheet on electrical tool safety compiled by the Canadian Centre for ...
Any contractor who has been on the jobsite during a difficult wire pull can attest to the ...
All electrical incidents are preventable! Keep employees safe with an up-to-date electrical ...


Case Study: EikoPro Electric LLC had a customer that had just constructed a new horse barn and was looking to light it quickly. The barn was designed to be lit with ten high bay lights for maximum efficacy and efficiency. Together with EiKO’s distributor partner, Platt Electric Redmond located in Redmond, Oregon, Pro Electric selected the EiKO 200W BAY-C high bay fixture, which puts out an impressive 30,000+ lumens at a 5000K color temperature. This high lumen output and the long life of the fixture – 72,000 hours – made it an ideal choice for the application.

Obviously, when lighting a barn, the security and safety of the animals, riders, and care givers is paramount. EiKO’s LED high bay products fill the space with light, eliminating shadows and blind spots.

Read More


Value of Building Permits - JuneThe $687 million Oakridge Centre mixed use redevelopment project in the city of Vancouver helped raise the total national value of building permits 6.2% to $8.1 billion in June, to a level comparable to pre-COVID levels. Overall, seven provinces reported gains for the month.

Residential permits rise
The total value of residential permits was up 7.0% to $5.3 billion, with gains posted in six provinces. British Columbia posted its third largest value on record for residential permits in June, up 20.4% to $1.3 billion due to large projects such as the Oakridge Centre redevelopment. 

 

Read More


 

Product News

  • Prev
Beluce has developed a line of social distancing signs and “face covering required” signs to remind ...
Eaton's Wiring Devices AL series dimmers offer a versatile option for any dimming application - ...
The YDD-L is an energy-efficient dusk to dawn yard light. It was designed for barns and ...
Arani's single-sided LED plastic running man sign comes in 2 versions: with battery, and without ...
With three shapes and 14 sizes available, Lumewerx’s latest addition to the Pop family comes in ...
Midwest’s Metallic RV power centers are a cost-effective favorite among campground owners ...
The IDEAL SLK® Disconnect Fuse Kit is a waterproof breakaway safety device that ...
The LED Edge-Lit ceiling luminaire has a very slim design for a modern and minimalist ...
The Green Cable Surface is synonymous with flexibility.      
Bri-Thin cables are an alternative to floor heating mats for tile and stone flooring. With high ...


 

Yard LightThe YDD-L is an energy-efficient dusk to dawn yard light. It was designed for barns and farms. It is a versatile and economic light source that is good on the environment and uses long-life LED’s. The YDD-L comes standard with photo control which helps to provide significant power savings.

Lens
Polycarbonate diffused lens encloses high performance LEDs.

 

 

 

Read More

 


 

Peers & Profiles

  • Prev
At fourteen, Tom Miguel was sitting in the counselor’s office of Silverthorn Collegiate ...
Meredith Halfpenny is a Wind Site Technician with Boralex where she inspects, maintains, and ...
Rutul Bhavsar is a final year Electrical Engineering student at Mohawk College. He recently ...
Shannon Tymosko is a first-year apprentice with IBEW (International Brotherhood of Electrical ...
ELG Electric is an electrical contractor based out of Goderich, Ontario serving the area’s ...
Founded by Warren Osak, Electromate specializes in Robotic and Mechatronic Solutions, distributing ...
 Will West is a first-year apprentice working in the solar industry with Hakai Energy ...
“It’s definitely the Olympics of our trade,” said Lance Giesbrecht of the Ideal National ...
Tommy Carducci is a 14-year industry veteran working with Seneca Electrical and was one of 18 ...
Legend Power Systems is an innovative Canadian company headquartered out of Vancouver, B.C. Their ...


Tom MiguelBy Sarah PickardTom Miguel

At 14, Tom Miguel was sitting in the counselor’s office of Silverthorn Collegiate Institute in Etobicoke with his entire life ahead of him. In 1981, the world was changing, and like so many young men and women, he was faced with a world of choices that would go on to define both his career and his life.

It was in this office that some counsellor suggested becoming an electrician, and Tom’s interest was piqued. “I knew from that point on what field of studies I needed to focus on to become an electrician,” Tom said.

 

Read More

 


Rutul Bhavsar 1 400By Blake Marchand

Rutul Bhavsar is a final year Electrical Engineering student at Mohawk College. He recently co-authored a whitepaper on Mohawk College’s Joyce Centre for Partnership & Innovation discussing the technologies utilized in the state-of-the-art zero-carbon/carbon-neutral facility. Rutul was the lead author on the project, supported by Dr. Mariano Arriaga, General Manager of Mohawk’s Energy and Power Innovation Centre (EPIC) and Dr. Tony Cupido Research Chair, Sustainability at Mohawk College. Rutul’s interests lie in the more progressive areas of the industry, automation, control, and energy efficient technologies.

Read More


 

Copper $US Dollar price per pound

Electrical Industry News Week

This special weekly digest has the broadest reach of those that are involved in all aspects of the electrical industry including electrical construction and maintenance professionals and electrical specifying engineers across Canada. EIN is designed to provide electrical professionals’ insight and intelligence on those developments in the industry that effect design, specification, installation of electrical equipment. From corporate news to new technologies and insightful opinions EIN will become your first read in the electrical industry in Canada. Published weekly – every Tuesday
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