Wire Size Calculator
Find Recommended Wire Gauge
One-way distance
Find Max Wire Length
Combined Wire Size Equivalent
Set how many wires you are combining, choose type and gauge for each one, then see the single-wire equivalent across all wire types.
Max 20 wires
Wire 1
Wire 2
Equivalent Bundle Conductivity
| Wire Type | Equivalent Single Wire |
|---|---|
Tefzel Single Wall (M22759/32) 150°C • MIL-W-22759/32 | 16 AWG |
Tefzel Dual Wall (M22759/16) 150°C • MIL-W-22759/16 | 16 AWG |
TXL Wire 125°C • SAE J1128 | 16 AWG |
Standard (GPT) 105°C • SAE J1128 | 16 AWG |
Battery Cable (EPDM) 105°C • SAE J1127 | 6 AWG |
Technical Reference & Notes
- Tefzel Single Wall:Tefzel Single Wall (M22759/32). Lightweight aerospace grade (150°C).
- Tefzel Dual Wall:Tefzel Dual Wall (M22759/16). Heavy duty aerospace grade (150°C).
- TXL Wire:Thin wall cross-linked polyethylene (125°C). Automotive standard.
- Standard (GPT):Standard automotive PVC wire (105°C).
- Battery Cable (EPDM):Flexible EPDM insulation (105°C) for high-current battery/welding applications.
- Grounding:Two-Wire (Round Trip): Electricity travels to device AND back through wire (2x resistance). Chassis Ground: Returns through vehicle body (1x resistance, single wire only).
* Calculations account for the selected grounding path. Always use the larger size if your calculation is between gauges.