1-Phase Circuits

Single Phase AC Circuits

Why 3-Phase Power? Why Not 6, 12 or More for Power Transmission?

Why is Only 3-Phase Power Supply System Used Instead of 2-Φ, 4-Φ, 6-Φ, 12-Φ or More Number of Phases for Power Transmission & Distribution? We know that the most common…
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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? If there are three winding coils on the rotor of an alternator winded 120° degree…
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How to Size a Load Center, Panelboards and Distribution Board?

Sizing Main Panel, Load Center, Panelboards, Distribution Board & Consumer Unit According to NEC and IEC? Planning is the first and most critical priority for all electrical wiring projects. Proper…
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Voltage Divider Rule (VDR) – Solved Examples for R, L and C Circuits

Voltage Division “VDR” for for Resistive, Inductive and Capacitive Circuits What is Voltage Divider Rule? In a circuit, when a number of elements are connected in series, input voltage divides…
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Current Divider Rule (CDR) – Solved Examples for AC and DC Circuits

Current Division “CDR” for for Resistive, Inductive and Capacitive Circuits What is Current Divider Rule (CDR)? When a number of elements are connected in parallel, the current divides into a…
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Millman’s Theorem – Analyzing AC & DC Circuits – Examples

Millman’s Theorem for AC & DC Circuits – Step by Step Solved Examples Millman’s Theorem The Millman’s theorem is used in the circuit analysis when it has only branches in…
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How to Wire a Subpanel? Main Lug Installation for 120V/240V

Wiring a Subpanel for 120V & 240V with GFCI – NEC – US What is a Main Panel? According to NEC (National Electric Code: Article 1 00-Definitions), a Main Panel…
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How to Wire a Twin 3-Pin Socket Outlet? Wiring 2-Gang Socket

How to Connect a 2-Gang, 3-Pin BS1363 Socket Outlet? Wiring Switched Double Plug Socket 3-Pin Dual Socket Outlet A BS1363 socket outlet (by IEC) is also known as a UK…
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How to Wire a Garage Consumer Unit?

Wiring a Garage Consumer Unit with RCD & Connecting 1-Φ, 230V Load Points in it. What is a Garage Consumer Unit? A Garage Consumer is a type of consumer unit…
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How to Wire 1-Phase & 3-Phase Split Load Distribution Board?

Wiring a 230V/400V, 1-Φ & 3-Φ Split Load Distribution Board: UK & EU – IEC Split Load & Dual Split Load Distribution Boards The dual split load three phase distribution…
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