Voltage Drop Calculator
Voltage drop
6.18 V
- Percent drop
- 5.15%
- Voltage at load
- 113.8 V
- Conductor resistance
- 1.93 Ω per 1,000 ft
- Power lost in wire
- 99 W
Drop exceeds 3%. The NEC informational note recommends 3% max on a branch circuit and 5% total. Consider a larger wire.
All sizes at 16 A over 100 ft (copper)17 rows
| Size | Drop (V) | Drop (%) |
|---|---|---|
| 1 AWG | 0.49 | 0.41% |
| 2 AWG | 0.62 | 0.52% |
| 3 AWG | 0.78 | 0.65% |
| 4 AWG | 0.99 | 0.82% |
| 6 AWG | 1.57 | 1.31% |
| 8 AWG | 2.44 | 2.04% |
| 10 AWG | 3.87 | 3.23% |
| 12 AWG | 6.18 | 5.15% |
| 14 AWG | 9.82 | 8.19% |
| 250 kcmil | 0.16 | 0.14% |
| 300 kcmil | 0.14 | 0.11% |
| 350 kcmil | 0.12 | 0.1% |
| 500 kcmil | 0.08 | 0.07% |
| 1/0 AWG | 0.39 | 0.33% |
| 2/0 AWG | 0.31 | 0.26% |
| 3/0 AWG | 0.25 | 0.2% |
| 4/0 AWG | 0.19 | 0.16% |