| | | | | | In this episode, Russ finds a UF cable installed between some rocks, strewn about, and lying on top of gravel. Section 340.12(10) does not permit UF cable to be used where subject to damage. Because the cable is lying on gravel where anyone can walk on it, it is a clear violation of that NEC requirement. |
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| | Advertisement | EXAIR Cabinet Coolers stop electronic control downtime due to heat, dirt and moisture. Learn the many advantages of using these low cost and reliable systems. Learn more in EXAIR's In The Know paper "Cabinet Cooler Advantages".
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| | | Test your knowledge of the NEC with this challenging quiz question from NEC Consultant John Lupacchino. Does the NEC permit a panelboard to be installed in the bathroom of a commercial office building? |
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| | | Episode 28 features subject matter expert Randy Barnett, who addresses some of our readers’ most pressing questions about all things grounding and bonding, including whether or not the main grounding electrode conductor can be spliced, 3-pole vs. 4-pole automatic transfer switch grounding and separately derived systems, grounding diesel engine driven... |
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| | | Insulation failure is the root cause of many electrical conductors and equipment failures. When insulation fails, not only can equipment be damaged, but fire and shock can also result. Ideally, when the current leaves its normal path through a conductor, proper bonding will result in the overcurrent device clearing the fault. Being able to predict ... |
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| | | Motor branch-circuit short-circuit and ground-fault protective devices protect the motor, the motor control equipment, and the conductors against overcurrent, but not against overload. They are generally called overcurrent protective devices (OCPDs) and Mike Holt breaks them down in part 2 of NEC Requirements for Motors. |
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| | | If you dig deep enough into the wiring methods within Chapter 3 of the NEC, you’ll find this obscure but handy article for “Nonmetallic Extensions.” This Article covers the use, installation, and construction specifications for a highly “debatable” option for residential and commercial electricians. I expect to see some interesting comments on this... |
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| | | ABB’s MegaFlex UL wins the Platinum award in the 2023 EC&M Product of the Year competition. It yields lower installed cost, faster startups, and commissioning schedules. The MegaFlex design also allows for better heat rejection and simpler cooling especially when deployed inside critical power containers. |
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| | | See the latest Code violations from NEC Consultant Russ LeBlanc. The first catastrophe shows a creative wiring solution that used gas piping or gas pipe fittings as a wiring method. While inventive, this installation is not Code compliant and violates Sec. 110.8. The second example shows a garage with NM cable installed exposed in the open walls, leaving... |
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| | | For electric space-heating cable installations such as the type shown in this picture, Sec. 424.47 requires the manufacturers to provide marking labels indicating that the installation incorporates space-heating cables. These marking labels are required to be affixed to the panelboards to identify which branch circuits supply the space-heating cables... |
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| | | Answering your NEC questions. Test your NEC knowledge with these questions from NEC Consultant Mike Holt regarding Code requirements for using and installing EMT. |
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| | | In Episode 21 of “EC&M Asks,” our subject matter expert Tommy Northcott, P.E., a senior power engineer and branch manager for Jacobs Technology, Inc., answers more reader-submitted questions regarding thermology and infrared inspections. With almost 20 years in the electrical industry as an electrical engineer, project manager, arc flash program manager... |
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| | | Test your knowledge of the NEC with this challenging Q&A from Code Consultant Mike Holt. What are the conditions electrical metallic tubing (EMT) can be used and installed? |
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| | | Think you know how this installation violates the NEC? How well do you know the Code? Think you can spot violations the original installer either ignored or couldn’t identify? Hint: Rooftop limbo. |
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| | | Take this quiz about electric vehicles and enter for a chance to win a $25 gift card to Amazon, iTunes, or Cabela’s! |
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| | Advertisement | Ready for the latest product videos and solutions? They're all right here! Get the scoop on all the new trends and tech, and get your questions answered! |
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