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Why are Salt and Charcoal Added in Earthing Pit for Grounding?
Why Do We Use Charcoal and Salt for Earthing and Grounding? For safe and effective earthing and grounding, it is…
Why is the Earth Pin Thicker and Longer in a 3-Pin Plug?
Why Is the Earth Pin Longer and Larger in a 3-Pin Plug? Electricity is both useful and dangerous. It can…
Why is the Grounding Wire Bare and Not Insulated?
Why is Mostly Solid Bare Conductor Used for Grounding Instead of Insulated Wire? A ground wire, also called a grounding…
What is the Purpose of Live-Line Washing on Power Lines?
Importance of Live-Line Washing, Live-Line Maintenance, or Cleaning What is Live-Line Washing? Live-line washing—also called live-line maintenance or live-line working—is…
If a 1-Phase Supply is 230V, Why is 3-Phase 400V & Not 690V?
When Single Phase Supply Voltage is 220V, Why is Three Phase 440V and Not 660V? In an alternator, three separate…
Why is a Power Plant Capacity Rated in MW and not in MVA?
Why is the Rating of a Power Plant Capacity Expressed in MW instead of MVA? A power plant’s capacity is…
Why are Air-Conditioners (AC) Rated in Tons, Not in kW or kVA?
Why Is an Air Conditioner or Refrigerator Rated in Tons Instead of kVA or kW? Most air conditioners and refrigeration…
When and Why Did the U.S. Transition from 110V to 120V Supply?
Why Did the Voltage Level Increase from 110V to 120V in North America? The electric power transmission and distribution system…
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