Voltage Drop Calculator
Enter wire gauge, one-way distance, current, and system voltage to compute voltage drop percentage. Helps ensure electrical circuits stay within the recommended 3-5% voltage drop for branch circuits.
Inputs
Results
Voltage Drop
5.94 V
Drop %
4.95%
End Voltage
114.06 V
Assessment
Acceptable (3-5%)
Voltage Drop Details
| Parameter | Value |
|---|---|
| System Voltage | 120 V |
| Current | 15 A |
| One-Way Distance | 100 ft |
| Round-Trip Wire | 200 ft |
| Wire Gauge | 12 AWG (copper) |
| Wire Resistance | 0.3960 ohms |
| Voltage Drop | 5.94 V |
| Drop Percentage | 4.95% |
| End Voltage | 114.06 V |
| Assessment | Acceptable (3-5%) |
Last updated:
Frequently Asked Questions
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