More in NEC

Jan. 3, 2013

Article

Electrical Construction and Maintenance

Code Quiz: Mounting Receptacles

When mounting receptacles in boxes that are set back from the finished surface as permitted in 314.20, the receptacles shall be installed so that the mounting yoke or strap of the receptacle is _________ ....More
Jan. 3, 2013

Video

Electrical Construction and Maintenance

Moving Violations Video No. 39, by Russ LeBlanc, NEC Consultant: Working Space & Dedicated Equipment Space 2

In this episode, Russ LeBlanc points out violations of working space and dedicated equipment space rules for this panelboard....More
Dec. 20, 2012

Video

Electrical Construction and Maintenance

Moving Violations Video No. 38, by Russ LeBlanc, NEC Consultant: String of Temporary Lights

In this episode, Russ examines a string of temporary lights that were installed for a construction project. This is a violation 590.4 (F) of the NEC....More
Dec. 20, 2012

Article

Electrical Construction and Maintenance

Code Quiz: Clearance of Live Parts 1

Fill in the blank with the appropriate answer. For field-fabricated installations using equipment operating at more than 600V, the minimum air separation between live conductors and between such conductors and adjacent grounded surfaces shall be a minimum of______ in. for an indoor, phase-to-phase application of 13.8kV. A. 12 B. 7.5 C. 7 D. 5 Answer: B...More
Dec. 20, 2012

Article

Electrical Construction and Maintenance

Code Q&A: Luminaire Requirements

Your most pressing National Electrical Code (NEC) questions answered...More
Dec. 20, 2012

Article

Electrical Construction and Maintenance

What’s Wrong Here? Hint: It's Limbo Time! 6

Can you identify the Code violation(s) in this photo?...More
Dec. 18, 2012

Article

Electrical Construction and Maintenance

Stumped by the Code? Using Floor Receptacles and Wall Outlet Requirements, Placing Receptacles on Countertops, and More 1

Your most pressing National Electrical Code (NEC) questions answered...More
Dec. 18, 2012

Article

Electrical Construction and Maintenance

What’s Wrong Here? Hint: If Two Is Company, and Three’s a Crowd — What’s 10? 2

Can you identify the Code violation(s) in this photo?...More
Dec. 18, 2012

Article

Electrical Construction and Maintenance

Illustrated Code Catastrophes: Sections 314.15, 300.5(B), 300.6(B), and 240.21(A) through (H)

All references are based on the 2011 edition of the NEC...More
Dec. 18, 2012

Article

Electrical Construction and Maintenance

NEC Rules on Overcurrent Protection for Equipment and Conductors

Overcurrent exists when current exceeds the rating of equipment or the ampacity of a conductor. This can be due to an overload, short circuit, or ground fault [Art. 100]. Overcurrent devices protect conductors and equipment from overcurrent....More
Dec. 6, 2012

Article

Electrical Construction and Maintenance

Code Quiz: Door Stops and Cover Plates 1

Fill in the blank with the appropriate answer. When installing metal-clad power switchgear (greater than 600V), the external hinged doors or covers must be ___________ . A. provided with stops to hold them in the open position B. provided with a full-length hinge C. lockable. D. Provided with a viewing window Answer: A...More
Dec. 6, 2012

Article

Electrical Construction and Maintenance

Code Q&A: GFCIs and Pool Pumps

Your most pressing National Electrical Code (NEC) questions answered...More
Dec. 6, 2012

Article

Electrical Construction and Maintenance

What’s Wrong Here? Hint: Don't Blow a Gasket 9

Can you identify the Code violation(s) in this photo?...More
Dec. 3, 2012

Video

Electrical Construction and Maintenance

Moving Violations Video No. 37, by Russ LeBlanc, NEC Consultant: Power Limited Fire Alarm Cables 1

In this episode, Russ finds some improperly installed power limited fire alarm cables and references Section 760.130(B)(1) of the 2011 NEC....More
Nov. 15, 2012

Article

Electrical Construction and Maintenance

What’s Wrong Here? Hint: Buenas Notches 8

Can you identify the Code violation(s) in this photo?...More
Nov. 15, 2012

video

Moving Violations Video No. 36, by Russ LeBlanc, NEC Consultant: Transformers & Ventilation Openings

In this episode, Russ calls into question the mounting location of this power distribution transformer, and whether or not the NEC ventilation requirements [450.9] have been met....More
Nov. 15, 2012

Article

Electrical Construction and Maintenance

Code Q&A: Boundary Seals in Hazardous Locations 2

Your most pressing National Electrical Code (NEC) questions answered...More
Nov. 15, 2012

Article

Electrical Construction and Maintenance

Code Quiz: Underground Wiring in Class I, Division 1 Locations

When installing polyvinyl chloride conduit (PVC) or reinforced thermosetting resin conduit (RTRC) as a Class I, Division 1 wiring method for an underground installation in a tank farm area, which statement is not true? A. The conduit(s) must be installed with 24 in. of cover over the top of the concrete, which encases the conduit. B. The conduit(s) must be covered by at least 2 in. of concrete. C. The conduit(s) must be encased in a concrete envelope by at least 2 in. of concrete....More
Nov. 13, 2012

Article

Electrical Construction and Maintenance

Illustrated Code Catastrophes: Sections 314.22, 314.29, 410.6, 410.56(B), 410.42 and 410.74 1

More Code catastrophes uncovered in these faulty installations...More
Nov. 9, 2012

Article

Electrical Construction and Maintenance

What’s Wrong Here? Hint: Hammer Time 3

Can you identify the Code violation(s) in this photo?...More
Nov. 9, 2012

Article

Electrical Construction and Maintenance

NEC Rules on Outside Branch Circuits and Feeders 1

Outdoor conductors running to buildings aren't necessarily service conductors. They may be feeders or branch circuit conductors originating in another building. They may provide power for area lighting, outdoor equipment, or a separate structure....More
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CodeWatch Archives

Missed an issue of CodeWatch?...More
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CodeWatch 2004

Nothing can be more frustrating than missing an issue of CodeWatch - we know. But now you never have to go without it again. We've got you covered with this handy archive of past issues...More
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CodeWatch 2005 Issue Archive

Nothing can be more frustrating than missing an issue of CodeWatch - we know. But now you never have to go without it again. We've got you covered with this handy archive of past issues...More
Nov. 1, 2012

Article

Electrical Construction and Maintenance

Code Quiz: Underground Wiring

When installing PVC conduit or RTRC as an approved wiring method in an underground installation to supply a gasoline dispensing device at a gas station, which statement is true?...More