Canadian Electrical Industry News Week

 

Electrical GroundingWilliam (Bill) Burr

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. In this article: Section 10 — Grounding and bonding.

Section 10 — Grounding and bonding

Section 10 is a general section of the Code and applies to all installations unless amended by other Sections of the Code. It's Scope outlines requirements for:

• grounding of electrical systems and service equipment
• bonding of non-current-carrying metal parts of equipment and conductor enclosures, together and to ground
• the use of ungrounded systems and neutral grounding devices

Special terminology used in this section and found throughout the code include bonding, bonding conductor, ground, ground fault, ground fault detection, ground fault protection, grounded, grounding, grounding conductor, grounding electrode, and grounding system.

These are all thoroughly defined in Section 0. In general terms, bonding refers to a low impedance permanent connection of all non-current-carrying metal parts together, and grounding refers to a permanent low impedance connection to the earth.

The stated object of Section 10 is to provide rules for

• bonding metal parts and systems together and to the grounded system conductor to reduce the danger of electric shock and property damage, providing a low impedance path for fault current back to the source, and establishing an equipotential plane to minimize potential difference between non-current carrying metal parts

• grounding the electrical system and bonding of non-current carrying metal parts to earth to minimize any potential difference to earth

• using an ungrounded system or a neutral grounding device in the system to provide alternates to a solidly grounded system, and minimizing any damage from a single fault by limiting the magnitude of the fault current.

System and circuit grounding rules 10-102 to 10-116 provide guidance on when and where, as well as exceptions to, grounding specific two-wire dc systems, three-wire DC systems, AC systems, electric arc furnaces, electric crane circuits, isolated circuits, circuits of less than 50V, and instrument transformer circuits.

Once you have determined your specific grounding needs, Grounding connections for systems and circuits rules 10-200 to 10-212 provide specific detailed guidance on how to ground various systems. Appendix B also contains some helpful diagrams.

Conductor enclosure bonding rules 10-300 to 10-304 are guidelines for when and where to bond metal enclosures for service conductors, underground service conductors, as well as enclosures for other than service conductors.

Equipment bonding rules 10-400 to 10-414 provide the varying requirements for when and where to bond all metal non-current carrying parts of fixed equipment general, fixed equipment, specific, non-electrical equipment, portable equipment, instrument transformer cases, cases of instruments, meters, and relays-operating voltage 750v or less, cases of instruments, meters, and relays-operating voltage over 750V, as well as non-metallic wiring systems.

The Bonding methods rules 10-600 to 10-626 will guide you through the steps needed to ensure an effective continuous, low-impedance bonding connection when Bonding service equipment, Metal armour or tape of service cable, Bonding at other than service equipment, Loosely jointed metal raceways, bonding jumpers, short sections of raceway, fixed equipment, portable equipment, pendant equipment, bonding equipment to the grounded system conductor (bonding to ground), and electrolytic-type water heaters. Helpful suggestions are also contained in the Appendix B notes.

Rule 10-700 Grounding electrodes sets out the requirements for establishing a grounding connection through the use of electrodes. There are specific rules for various grounding electrodes including manufactured grounding electrodes (both rod electrodes and plate electrodes), field-assembled ground electrodes, and in-situ grounding electrodes forming part of the existing infrastructure. Rule 10-702 sets out spacing and interconnection requirements for grounding electrodes where more than one grounding electrode exists at the building including those electrodes used for signal circuits, radio, lightning protection, communication, community antenna distribution systems, and any other purpose. Rules 10-704 and 10-706 deal with railway track electrodes and the use of lightning rod system conductors and grounding electrodes.


Rules 10-800 to 10-820 are rules governing continuity, material selection, sizing, and installation of grounding and bonding conductors. The size of a grounding conductor is determined by the type of system, either AC or DC. The size of a bonding conductor as determined by Table 16A or 16B depends on the size of the associated circuit conductor (Table 16A) or on the size of the associated bus-bar (Table 16B).

Once you have installed the correct type and size of bonding and grounding conductor, pay close attention to the connection of these conductors as specified in rules 10-900 to 10-906 Grounding and bonding conductor connections. The continuity and safety of a low-impedance path to reduce the danger of electric shock and property damage, and providing a low impedance path for fault current back to the source, depends on adequate and sound connections.

The final two subjects of Section 10 deal with grounding and bonding of lightning arresters and the installation of neutral grounding devices.

In the next installment we will be discussing Section 12 — Wiring methods.

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


 

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.

 

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Government of CanadaThe federal governemnt has officially launched a call for proposals (CFP) for the Zero-Emission Vehicle Awareness Initiative (ZEVAI). The initiative’s 2022 CFP will help fund new and innovative projects that aim to increase awareness and knowledge of ZEVs and charging and refueling infrastructure thereby increasing public confidence in these vehicles and their economic and environmental benefits.


Natural Resources Canada will provide funding through non-repayable contributions of between 50 and 75 percent of the total eligible project costs, with a maximum funding of up to $300,000 per project. The CFP will close on August 18, 2022.

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Omnicable joins ETIMETIM North America announced that OmniCable has joined the product classification standards organization. Headquartered in West Chester, PA, OmniCable has 24 locations throughout North America, and also owns Houston Wire & Cable (HWC). The company partners with many electrical manufacturers and only sells to distributors.

According to John Dean, Director of Marketing & E-Commerce, OmniCable/HWC, “The wire and cable industry is often called commodities, but there are very distinct features and attributes for the different products our manufacturers produce. 

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Atkore United Poly SystemsAtkore Inc. announced that it has acquired United Poly Systems, a manufacturer of High Density Polyethylene (HDPE) pressure pipe and conduit, primarily serving telecom, water infrastructure, renewables, and energy markets.

“We are pleased to complete the acquisition of United Poly Systems, which strengthens Atkore’s product portfolio, expands our manufacturing capacity and further enables us to meet HDPE customers’ needs,” stated John Pregenzer, President of Atkore’s Electrical business. “HDPE pipe and conduit is a growing market that is expected to benefit from U.S. infrastructure legislation, and United Poly Systems is a great addition to Atkore. We welcome these employees and look forward to working together to continue to serve and support our customers.”

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Canadian Electrical Contractor Discussion Group: Can You Count the Deficiencies?

EIN CECD 400Have you ever been called to fix the work of a 'handyman'?

"Was supposedly done by a"certified ' electrician....told the homeowner that he got a $266 permit....no record at TSBC. Can you count the deficiencies?"

"There is a second panel change in the triplex also.......even more deficiencies. Think the guy was a glorified handyman. Ones not obvious: 240 BB heat hooked up 120....drier on 2p20....range on 2p50....water heater fed with 2c14 Bx on 2p15."

Go HERE to join the discussion

 


 

Grimard is more competitive and produces estimates 3X faster with Procore

Procore

When the pandemic lockdowns started in March of 2020, Grimard (an electrical contractor) had to decide whether to shut down its operations entirely or implement a new platform with people who were now freely available for work. Once they implemented Procore, they found a way to efficiently communicate with stakeholders and offer full transparency in terms of project costs and planning. It also allowed Grimard to utilize historical data to make project estimates more accurate. Grimard was able to streamline its bidding process, which made it more attractive to potential clients and helped the business grow.

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Iron+EarthThe RenuWell Project partners are excited to announce the groundbreaking of two pilot sites located near Taber, Alberta. These pilot sites are the first of their kind to repurpose inactive oil and gas infrastructure as a foundation for renewable energy development and job creation.

When operating, the solar projects will generate 2,030 MWh annually – enough electricity to power 280 average Alberta households or irrigate 11,700 acres of farmland for an average year. This is roughly equivalent to $200,000 in electricity sales per year with 1,100  tCO2e savings in GHG emissions. Over a 25-year lifespan, the projects will generate 50,750 MWh, with GHG emission savings of 28,420 tCO2e.

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David O'ReillyBy Elle Bremmer

Recently, I had the pleasure of sitting down with David O’Reilly, Vice President Home & Distribution and Secure Power Divisions with Schneider Electric Canada for a discussion regarding the Wiser EnergyTM smart home solution, the Wiser Approved training program, and his thoughts on several different subjects, including sustainability and future technologies currently in the works at Schneider Electric. David has been with the company for five and a half years in his role.

We recently published a study (version en français ICI) from Schneider Electric showing a strong interest from Canadians in smart home technology. 

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Infinitely capable, these ruggedly built products have several industry leading & exclusive features including:

Industrial String Lights:

  • A United States Navy Specification since before WWII, they’re time and application tested...

 

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Intermatic Pool and Spa SolutionIntermatic Incorporated announced its new P40000 Series Load Centers, a set of next-generation panels for pool-only applications, as well as its new PE24GVA 24-Volt Valve Actuator, an easy-to-install valve actuator that allows for tool-free cam adjustments. Both solutions remove obstacles for pool service professionals while delivering lasting performance.

“Intermatic load centers and valve actuators have been the preferred choice of pool professionals for more than 30 years,” says Brian Lamberty, product marketing manager at Intermatic. “The PE24GVA and P40000 Series build on that tradition, helping pool professionals streamline service calls while setting the standard for quality and performance.”

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Klein Tools Zipper BagsKlein Tools introduces new Stand-up Zipper Bags, in a 2-Pack with 7-Inch and 14-Inch sizes, both designed to handle tough jobsite conditions and stand up so tools and small parts can be easily accessed when working.

Stand-up Zipper Bags, 7-Inch and 14-Inch, 2-Pack (Cat. No. 55559)

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Emerson HV SafetyThe Occupational Safety and Health Administration (OSHA) estimates 350 employees are killed annually in electrocution accidents, which roughly equals one fatality per day. In the face of these dangers, OSHA officials and industry safety consultants alike recommend eliminating potential hazards on work sites, rather than simply relying on contractors or employees to follow safety guidelines.

To help safeguard employees from electrocution, Emerson has launched its Appleton™ Powertite™ Lock Collar, a device that fastens over plug and connector connections and is secured with a padlock, preventing unauthorized personal from disconnecting the cable connection once in place. 

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Copper $US Dollar price per pound

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