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Dealing with Currents in PV Systems — Just a little more...

In the previous article in this series, we saw how the voltages from PV modules are affected by the environment and how the National...

Current Limitation

Some of the scariest curves for me as a young engineer out of college were the let-thru curves published by fuse and circuit breaker...

Ohm’s Law…the Relationship between Voltage, Current and Resistance

Theory Terms and Definitions The following definitions relate to basic electrical theory. It is important that installers and inspectors have a working knowledge of electrical...

Current in the Grounded Conductor

Recently there have been several questions about the locations of grounding connections to the grounded conductor. Before looking at some of the requirements specific...

The 3rd Harmonic Blocking Filter: A Well Established Approach to Harmonic...

It has long been recognized that harmonic currents, particularly the 3rd harmonic, flowing in a wye distribution system serving multiple computer loads, are detrimental...
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