Question 1

How do you calculate three-phase power?

Accepted Answer

P = √3 × V_line × I_line × PF. For 480V, 100A, PF=0.85: P = 1.732 × 480 × 100 × 0.85 = 70.6 kW.

Question 2

What is the advantage of three-phase power?

Accepted Answer

More efficient power transmission, smaller wires for same power, smoother motor operation.

Question 3

What's the relationship between volts, amps, and watts?

Accepted Answer

Power (Watts) = Voltage (Volts) × Current (Amps). To find any value, divide or multiply: Amps = Watts/Volts, Volts = Watts/Amps.

Question 4

Is AWG or metric wire gauge better?

Accepted Answer

AWG (American Wire Gauge) uses arbitrary numbers where smaller = thicker. Metric (mm²) directly indicates cross-sectional area, making calculations easier.

Three Phase Calculator - Free Online Tool

Frequently Asked Questions

Explore Financial Toolset

Compound Interest Calculator

Mortgage Calculator

Debt Payoff Calculator

Retirement Calculator