It is essential to clearly explain the difference between grounded and grounding, and then find a way to etch this into the student’s mind so he or she will not confuse or misuse the terms.
Because meter sockets are now being installed on the other side of a customer’s load center, as part of PV installations, it is important for an inspector to understand the terminal configurations to help ensure the equipment was installed in a safe manner.
In this article we will look at the biggest and brightest stars of this new technology era, when it comes to what is being seen on the plan review tables in building departments all over the U.S. and around the world.
In the last issue we discussed the NEC requirements up through 110.14, Electrical Connections, so we will start with 110.15, the requirement for identifying the high leg.
Some of the items covered in Article 110 are the requirements for examination, installation and use, terminations, and access to and spaces about electrical equipment.
The Electrical Inspection Code for Existing Residential Occupancies will be a National Standard of Canada, published in English and French.
There is a huge opportunity to provide those tools necessary for young and new inspectors coming in to this trade.
Last issue we made it through the "g” definitions in Article 100. In this article, we will finish reviewing selected definitions.
There are a variety of technologies and methods used to test the insulation of wire and cable, including high-potting, very low frequency (VLF), power factor, partial discharge, time-domain reflectometry (TDR), and "thumping.”
Article 90 is rarely given consideration when someone references the National Electrical Code (NEC).