Test your knowledge of Ampacity requirements in the 2017 NEC by taking this Code Hunter quiz. Be sure to have your Code book ready!
What is it that separates capable presenters from those who struggle? Why do some presentations elicit enthusiastic responses, while others are, frankly, dismal failures? Is it the content, the preparation, the person, or something else?
The Professional Electrical Apparatus Reconditioning League (PEARL) has launched a new phase of its Technician Certification Program. This program allows individuals to become recognized as a Certified Electrical Equipment Reconditioning Technician.
Based on consumer demands, electrical manufacturers have developed new permanent outdoor solutions that are safer, more convenient and more reliable than previous outdoor electrical products.
The direct current output of a dc PV module varies with the sunlight intensity, the temperature of the module, and the load connected to that module.
To start with let’s look at the different types of ground fault protection. The remainder of this article will focus on ground fault protection requirements for distribution equipment.
As buildings are updated with high-efficiency LED light sources, energy codes generally require that the lighting control systems also be updated to satisfy new, more efficient performance requirements.
I was recently asked this question by a group of electrical engineers in conjunction with the NFPA 20 requirement for an overcurrent device protecting feeder conductors to the fire pump controller from the normal power supply source to carry a fire pump locked rotor current indefinitely.
The new Copper-clad aluminum building wire (Cu-Clad), however, displays improved physical characteristics due to the alloying of its core, designed to improve its application to building wire.
The purpose of this article is to inform, educate, and offer guidance in properly identifying when an AC disconnect is required for a residential or small commercial PV installation.