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March/April 2008
Recently I was asked to help a fellow inspector with a project that UL had implemented to harvest some aged electrical components from a recently abandoned 1910 residence in Forest Grove, Oregon. I brought along two of my sons, ages 11 and 15 years, to help. After watching a brief instructional video, powered by our [...]
Electrical systems and equipment are grounded to achieve a greater level of safety from electrical hazards to persons and property. Article 250 of the NEC provides the minimum requirements for grounding and bonding electrical systems and equipment. NEC-2008 has incorporated revisions related to electrical grounding and bonding terminology that results in improved clarity and usability [...]
Medium voltage systems are defined by the IEEE as those operating at voltage levels greater than 1,000 volts and up to 72,000 volts. High voltage is defined by NEC 490.2 as any system operating at “more than 600 volts, nominal.” Field electrical inspectors may be asked to inspect medium voltage installations in the course of [...]
Was this done to encourage pole-ish jokes? Where was the building inspector? Where was the electrical inspector? I understand the contractor obtained a building permit and when the addition of the bar to the restaurant was complete, the owner received a certificate of occupancy. On the good side, the roofer did a great job of [...]
Based on the response to recent seminars, the topic of medium voltage equipment and installations is one of high interest. This article will provide a brief history of the evolution, as seen by the author, of the industry and give a high-level overview of a few key areas from the product standpoint and terminology. Not [...]
The NEC-2008 has been complete for only a few short months, six since the adoption by NFPA, and four since the very first printing. The CD version just came out and the handbook is due sometime in late January or early February. As this is being written, there is a lot of activity in many [...]
As we move into 2008, the PV industry continues to grow by leaps and bounds. New module and inverter manufacturers are entering the industry, and the number of individuals and organizations installing PV systems is growing right along with the demand. Numerous small 2 kW residential and large megawatt commercial PV systems are being installed [...]
IAEI has always played a strong leadership role in the electrical industry and continues to accomplish this goal by playing an active role in the code development process, providing first-class educational opportunities through seminars and publications, and by providing a medium through which inspectors, contractors, manufacturers, and any other parties interested in the electrical industry [...]
Question: Switchboard How do I know if a switchboard or panelboard is Listed for top or bottom feed or both?
Question: Meter socket How do I know if a meter socket was evaluated for a top or bottom feed or both?