Target Power Lookup

5000 Watts to Amps Calculator

5000W dual-fuel generators, 5kW water heaters, garage unit heaters. Conversion for 5kW generators and electric home heating systems. Recommends 30A 240V breaker circuit.

⚡ 5000 Watts to Amps Calculator
Volts
PF
Calculated Result
--
Instant Calculation
Engineering Output
--
Auxiliary Output
--
Step-by-Step Derivation ▼ Show Steps
Governing Formula Verified Physics
I = 5000 Watts / (Voltage × Power Factor) = 20.83A @ 240V | 41.67A @ 120V

Calculations adhere to standard electrical engineering physics and National Electrical Code (NFPA 70) regulations.

Engineering Principles & Calculations

This calculator uses the exact mathematical relationships between Voltage (120V, 240V), Circuit Type to determine Amps (41.7A @ 120V, 20.8A @ 240V), Inlet Box Recommendation (L14-30P). In practical installations, factors such as ambient raceway temperature, harmonic distortion, duty cycle continuous operation, and conductor impedance must be accounted for by a certified electrician.

Conversion for 5kW generators and electric home heating systems. Recommends 30A 240V breaker circuit.

Typical Application & Industry Guidelines

5000W dual-fuel generators, 5kW water heaters, garage unit heaters.

Reference Matrix

5000 Watts to Amps Calculator Benchmark Lookup Table

VoltageCurrent (5000W)Required BreakerRecommended Wire
120V AC41.67 Amps60 A Breaker6 AWG Copper
208V AC24.04 Amps30 A Breaker10 AWG Copper
240V AC20.83 Amps30 A Breaker10 AWG Copper
480V 3-Phase6.01 Amps15 A Breaker14 AWG Copper
FAQ

Frequently Asked Questions

How many amps does 5000 watts draw at 240 volts? +
5000 Watts / 240 Volts = 20.83 Amps.
What size breaker do I need for a 5000W electric heater? +
A 30-amp double-pole circuit breaker with 10 AWG copper wire is required (20.83A × 1.25 = 26.04A).
Can a 5000W generator run a central AC? +
A 5000W generator can easily run a 5000W continuous load, but most central AC compressors have starting inrush surges of 10kW to 15kW that will stall it without a soft starter.

Related Electrical Tools

Watts-to-Amps Values

100 Watts to Amps Calculator

Open Calculator →
Watts-to-Amps Values

300 Watts to Amps Calculator

Open Calculator →
Watts-to-Amps Values

500 Watts to Amps Calculator

Open Calculator →
Watts-to-Amps Values

1000 Watts to Amps Calculator

Open Calculator →