Enter your Current Rating, Circuit Length, and Maximum Voltage Drop into this 24V Wire Size Calculator, then select your Electrical System and Conductor Material to get your Recommended Wire Size, along with the Cross-sectional Area, Actual Voltage Drop, and a Recommended Fuse Size to keep your 24V circuit safe and efficient.
Recommended Wire Size
--
Cross-sectional Area
--
Actual Voltage Drop
--
Recommended Fuse Size
--
For a typical 24V trolling motor drawing 20-30 amps, use 10 AWG wire for runs up to 25 feet, or 8 AWG for longer runs. Always check your motor's amperage rating and calculate based on actual current draw.
Proper wire sizing prevents voltage drop, reduces power loss, prevents overheating, and ensures safety. Undersized wires can cause equipment malfunction and create fire hazards.
The recommended maximum voltage drop is 3% for critical loads and up to 5% for non-critical loads. This ensures efficient power delivery and proper equipment operation.
Longer wire runs have higher resistance, causing greater voltage drop. As distance increases, you need larger wire gauge (lower AWG number) to maintain acceptable voltage levels at the load.
Yes, but aluminum has higher resistance than copper, requiring larger wire sizes. Aluminum is lighter and less expensive but requires proper connections to prevent corrosion and ensure reliability.
Three-phase systems are more efficient and require smaller wire sizes due to balanced loads. The calculation includes a √3 factor that reduces the required wire cross-sectional area.
The fuse should be rated at 125% of the continuous load current to provide protection without nuisance tripping. For intermittent loads, use 100% of the maximum current rating.