DC Wire Sizing
Wire size for low-voltage DC runs, decided by voltage drop rather than ampacity — which is the answer that actually matters once the run is longer than a few feet.
DC wire size and voltage drop
768 calculations
- Wire size for 5 A over 5 ft on a 12 V system
- Wire size for 5 A over 30 ft on a 24 V system
- Wire size for 5 A over 100 ft on a 48 V system
- Wire size for 10 A over 5 ft on a 12 V system
- Wire size for 10 A over 30 ft on a 24 V system
- Wire size for 10 A over 100 ft on a 48 V system
- Wire size for 15 A over 5 ft on a 12 V system
- Wire size for 15 A over 30 ft on a 24 V system
- Wire size for 15 A over 100 ft on a 48 V system
- Wire size for 20 A over 5 ft on a 12 V system
- Wire size for 20 A over 30 ft on a 24 V system
- Wire size for 20 A over 100 ft on a 48 V system
- Wire size for 25 A over 5 ft on a 12 V system
- Wire size for 25 A over 30 ft on a 24 V system
- Wire size for 25 A over 100 ft on a 48 V system
- Wire size for 30 A over 5 ft on a 12 V system
- Wire size for 30 A over 30 ft on a 24 V system
- Wire size for 30 A over 100 ft on a 48 V system
- Wire size for 40 A over 5 ft on a 12 V system
- Wire size for 40 A over 30 ft on a 24 V system
- Wire size for 40 A over 100 ft on a 48 V system
- Wire size for 50 A over 5 ft on a 12 V system
- Wire size for 50 A over 30 ft on a 24 V system
- Wire size for 50 A over 100 ft on a 48 V system
- Wire size for 60 A over 5 ft on a 12 V system
- Wire size for 60 A over 30 ft on a 24 V system
- Wire size for 60 A over 100 ft on a 48 V system
- Wire size for 70 A over 5 ft on a 12 V system
- Wire size for 70 A over 30 ft on a 24 V system
- Wire size for 70 A over 100 ft on a 48 V system
- Wire size for 80 A over 5 ft on a 12 V system
- Wire size for 80 A over 30 ft on a 24 V system
- Wire size for 80 A over 100 ft on a 48 V system
- Wire size for 100 A over 5 ft on a 12 V system
- Wire size for 100 A over 30 ft on a 24 V system
- Wire size for 100 A over 100 ft on a 48 V system
- Wire size for 125 A over 5 ft on a 12 V system
- Wire size for 125 A over 30 ft on a 24 V system
- Wire size for 125 A over 100 ft on a 48 V system
- Wire size for 150 A over 5 ft on a 12 V system
- Wire size for 150 A over 30 ft on a 24 V system
- Wire size for 150 A over 100 ft on a 48 V system
- Wire size for 175 A over 5 ft on a 12 V system
- Wire size for 175 A over 30 ft on a 24 V system
- Wire size for 175 A over 100 ft on a 48 V system
- Wire size for 200 A over 5 ft on a 12 V system
- Wire size for 200 A over 30 ft on a 24 V system
- Wire size for 200 A over 100 ft on a 48 V system