Have you done any service work lately, and noticed a spark as you connect or reconnect the grounding electrode conductor to the ground rod of what appeared...More
A separately derived system is a premises wiring system with no direct electrical connection to conductors originating from another system . All transformers, except autotransformers, are separately derived because the primary circuit conductors do not ......More
You basically perform work on two types of systems: solidly grounded or ungrounded. The general requirements for grounding and bonding these systems can be summarized as follows...More
The ultimate goal of sound and image reproduction is realism the kind that creates suspension of disbelief in the listener or viewer. And nothing breaks...More
Today, 80% of all input/output (I/O) devices in automation applications are supplied with 24VDC power. The second most popular voltage is 120VAC, which...More
Major power disturbances that originate outside of a building will almost always cause capacitive or inductive coupling, inadvertent contact with conductive...More
More electricians are installing AFCIs to comply with the Code, but up until now, neither the installer nor the inspector had any means available to properly test the devices....More
Resistance grounding specialist, IPC Resistors, Inc. has launched a revised website offering expanded content for all users, from electrical engineers...More
LEDs have unique and compelling characteristics that make them ideal for industrial lighting applications. But there are a variety of misconceptions about LEDs, how well they work, how long they last, and more. Digital Lumens developed this whitepaper to dish up the facts around LEDs and address some common misunderstandings....More
An arc flash is associated with the explosive release of energy caused by an electrical arc, due to either a phase-to-ground or a phase-to-phase fault. This kind of fault can result from many factors – a dropped tool, accidental contact with electrical systems, buildup of conductive dust, corrosion or improper work conditions.....More
Abstract: In this webinar, Mike will not only explain the current NEC requirements for GFCIs and AFCIs, but he'll explain how they operate, what causes their premature failure, and when they won't provide the safety protection you might have thought they would.
Abstract: This webinar will teach attendees the difference between risk and hazard, and how the choice of system grounding has a direct impact on reliability and safety.
