With respect to wiring entries, such as a schedule 80 PVC raceway installed underground entering into a handhole enclosure, a schedule 80 PVC raceway shall be mechanically and electrically connected to the handhole enclosure by ______....More
Data centers are unique facilities with electrical systems designed to achieve high availability and energy efficiency. If not properly designed, these robust systems can result in undesirable complexity and increased safety hazards....More
Electric cranes and hoists are ubiquitous (see Photos), but the NEC considers them to be “special equipment.” Though Art. 610 says it covers cranes, monorail hoists, hoists, and runways [610.1], it doesn’t define them in 610.2 (nor does Art. 100 define them)....More
Fill in the blank with the appropriate answer.
When installing junction and pull boxes for conductors operating at over 1,000V, the junction or pull boxes shall have sides ______.
A. that are spot-welded to form good mechanical and electrical continuity.
B. that have concentric or eccentric knockouts.
C. (one or more) that are removable.
D. that are bonded with a separate bonding jumper.
Find the Answer
In this episode, Russ shows us a great example of what happens when you don’t use expansion fittings in long runs of PVC. This installation violates the requirements set forth in Sec. 352.44 of the 2014 NEC....More
In the 2014 Edition of the National Electrical Code (NEC), the last sentence of the first paragraph in Sec. 500.5(A) states: “Where pyrophoric materials are the only materials used or handled, these locations are outside the scope of this Article.”...More
All references are based on the 2014 edition of the NEC.
Maximum Violations at Mini Golf Course
These photos were sent in by a reader who wishes to remain anonymous. He took them while playing miniature golf with his wife. According to him, “This is an area where masses of young people play, and a lot of people with no knowledge of the dangers of electricity come to have fun.”...More
The requirements of Art. 404 apply to switches of all types, including snap (toggle) switches, dimmer switches, fan switches, knife switches, circuit breakers used as switches, and automatic switches, such as time clocks and timers....More
If you’re an electrical engineer striving to earn the highest salary possible, a move to California may be in your future — considering the fact that six of the top 10 highest paying cities for electrical engineers just happen to fall within that state’s borders.
Labor costs often represent one of the biggest expenses in an companies budget. You can reduce those costs and get more work done by using the techniques outlined in this eBook to improve driver efficiency and productivity....More
Download these Frequently Asked Questions, sponsored by Westex to learn more about FR Clothing. These FAQs discuss the benefits of arc rated clothing and how NFPA 70E applies.
Download now to learn more....More
Facility Managers Turn to Smart Meters to Comply with LEED v4
With the introduction of LEED v4, facility managers face tougher metering requirements. In response, they are turning to advanced energy "smart meters" to easily access more granular energy data when measuring and verifying their building's energy consumption....More
The electrical industry spends hours participating in training in order to understand the revisions found in the 2014 NEC that will enhance electrical safety for our community. Electrical code revisions also serve as a significant catalyst that enables investment,...More
Simplify and improve everyday electrical tasks with the right tools. Improve productivity, get consistent results and improve safety with ergonomic hand tools.
Productivity. Reliability. Safety. We’ve Got You Covered....More