24V Wire Size Calculator
Free calculate the correct wire gauge for 24v dc circuits based on current draw, wire length, and acceptable voltage drop.
Circuit Parameters
3% of 24V = 0.72V (recommended)
Results
Enter circuit parameters to calculate wire size
24V DC Wiring Guide
Common 24V Applications
- • HVAC control systems: 1-5 amps
- • Security systems: 2-10 amps
- • LED lighting: 5-20 amps
- • Industrial controls: 10-50 amps
Voltage Drop Guidelines
- • General: ≤ 3% (0.72V)
- • Critical systems: ≤ 2% (0.48V)
- • Always use round-trip distance
- • Consider future load increases