3-Phase AC Circuits

Three Phase AC Circuits

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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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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Star-Delta Starter for Reverse – Forward Operation Without Timer

3-Phase Motor Connection Star/Delta (Y-Δ) Starter Reverse-Forward without Timer In this motor starter, there are four Contactors and switches (Two ON-Push and OFF-Push) are used to change the rotating direction…
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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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How to Wire a Three Phase, 400V Distribution Board? IEC & UK

Wiring a 3-Phase, 400V Distribution Board: UK & EU – IEC Three Phase Distribution Board A distribution board is the combination of protective devices such as Main switch, MCB, MCCB, RCD,…
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How to Wire Combo of 3 & 1-Φ, 400V/230V Distribution Board?

Wiring a Combination of 1-Phase & 3-Phase , 230V/400V Distribution Board: IEC-EU & UK What is a Distribution Board? A distribution board (also known as electric panel, breaker panel, panelboard, main breaker-box or main…
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Power Factor Correction Calculator – How to Find P.F Capacitor in µF & kVAR?

How to Calculate Capacitor in kVAR & µF for Power Factor Improvement? Calculator & Example Power Factor Calculator The following P.F calculator will calculate the existing or current power factor,…
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kVA to Amps Calculator – How to Convert kVA to Amps?

How to Convert kVA to Amps? Calculator and Examples kVA to Amps Calculator The following kVA to Amps conversion calculator will convert the apparent power “S” (i.e. kilovolt amperes or…
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Amps to kVA Calculator – How to Convert Amps to kVA?

How to Convert Amps to kVA – Calculator and Examples Amps to kVA Calculator The following Amps to KVA conversion calculator will convert the current “I” in amperes “A” to…
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