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Both calculators run independently — change the inputs on either side to compare results.

Wire Gauge & Ampacity Calculator

Determine the minimum wire cross-sectional area (in mm²) needed to safely carry a given current over a set distance without exceeding your allowed voltage drop. Essential for wiring solar systems, EV chargers, and long cable runs.

Current Load (A)

Wire Run Distance (ft)

System Voltage

Max Voltage Drop

Wire Material

Fill in the required fields to see your result.

Electrical

Electrical Panel Load Calculator

Estimate the total ampere demand on an electrical panel by applying NEC-style load factors to lighting, receptacle, appliance, and motor circuits, then check it against the panel's main breaker rating. Ideal for panel schedule design, load additions, and service upgrade evaluations.

Panel Main Breaker Rating

Lighting Circuit Load (W)

Receptacle Circuit Load (W)

Appliance Circuit Load (W)

Motor Circuit Load (W)

Panel Voltage

Fill in the required fields to see your result.

Key differences

	Wire Gauge & Ampacity Calculator	Electrical Panel Load Calculator
Category	Electrical	Electrical
Inputs required	5	6
Result	Minimum Wire Cross-Section (mm²)	Calculated Panel Load (A)
What it does	Determine the minimum wire cross-sectional area (in mm²) needed to safely carry a given current over a set distance without exceeding your allowed voltage drop. Essential for wiring solar systems, EV chargers, and long cable runs.	Estimate the total ampere demand on an electrical panel by applying NEC-style load factors to lighting, receptacle, appliance, and motor circuits, then check it against the panel's main breaker rating. Ideal for panel schedule design, load additions, and service upgrade evaluations.