Electric Shock
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Power System
Difference Between Grounding, Grounded and Ungrounded Conductors
Difference Between Grounding (Ground), Grounded (Neutral) and Ungrounded (Phase/Hot/Line) Conductors Grounding and grounding conductors are related terms commonly used in the National Electrical Code (NEC), technical guides, and user manuals.…
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Protection
Difference Between AFCI, CAFCI, DFCI and GFCI?
What is the Difference Between AFCI, CAFCI, DFCI and GFCI AFCI (Arc-Fault Circuit Interrupter), CAFCI (Combination Arc-Fault Circuit Interrupter), and DFCI (Dual-Function Circuit Interrupter) are protective devices and circuit breakers…
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Protection
What Happens When You Press TEST and RESET on a GFCI
What Do the TEST and RESET Buttons Mean on GFCI Breakers and Outlets? Why Do Some Breakers in My Panel Have a TEST/RESET Buttons? Not all breakers look the same…
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Protection
Why Don’t Welders Get Electrocuted When Touching the Metal?
Why Doesn’t the Welding Current Pass Through the Welder’s Body and Shock Him? We often hear the statement: “It is the current that kills, not the voltage.” However welding machines…
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Protection
Should GFCI Protection Be in the Main Panel or Receptacle?
Is It Better to Install GFCI Protection in the Electrical Panel or at the Outlet? Ground Fault Circuit Interrupters (GFCIs) are designed to detect ground faults and protect against electric…
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Power System
Can I Run 1-Phase Load on 3-Phase Supply and Vice Versa?
What Happens If We Connect a Single-Phase Appliance to a Three-Phase Supply or a 3-Phase Device to a 1-Phase Supply? Standard single-phase and three-phase voltage systems vary across the globe.…
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Protection
Can I Use a 1-Phase Breaker on a 3-Phase Supply & Vice Versa?
Is It Possible to Use a Single-Phase Breaker in a Three-Phase System, and a Three-Phase Breaker in a Single-Phase System? We frequently receive unusual questions and ideas related to DIY…
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Power System
Difference Between EGC and GEC in Electrical Grounding
Difference Between Equipment Grounding Conductor (EGC) and Grounding Electrode Conductor (GEC) Electrical grounding is the process of connecting all exposed metallic parts of an electrical system to the earth. This…
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Protection
Why is the Long Prong Neutral Instead of the Narrow Prong?
Why is the Wide Prong and Slot Designated as Neutral Instead of the Narrow Prong and Slot in a Plug and Outlet? Engineers typically avoid making arbitrary choices when designing…
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Protection
Why is the Neutral Prong or Slot Wider on a Plug or Outlet?
Why is the Neutral Prong and Slot Longer than the Hot Prong and Slot on a Plug and Outlet or Receptacle? Although the electrical power supply and distribution system in…
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