Voltage Drop Calculator
Built for contractors. Fast estimates for 1ø and 3ø runs using conductor resistance.
Calculator
Quick estimate using conductor resistance (no reactance). One-way distance.
Common targets: 3% (branch), 5% (feeder + branch).
Great (≤ 3%)Results
Voltage drop
0.00 V
Percent drop
0.00 %
Estimated load voltage
120.00 V
Planning tool only. Always verify with local code requirements and manufacturer data.
Built for speed
No clutter. Just the inputs you need to get a quick answer on site.
Contractor-friendly
Uses common targets (3% / 5%) so you can sanity-check runs fast.
Backed by Arkco support
Need a second set of eyes? We can help you size for the full install conditions.
Voltage Drop Calculator
Built for contractors. Fast estimates for 1ø and 3ø runs using conductor resistance.
Calculator
Quick estimate using conductor resistance (no reactance). One-way distance.
Common targets: 3% (branch), 5% (feeder + branch).
Great (≤ 3%)Results
Voltage drop
0.00 V
Percent drop
0.00 %
Estimated load voltage
120.00 V
Planning tool only. Always verify with local code requirements and manufacturer data.
Built for speed
No clutter. Just the inputs you need to get a quick answer on site.
Contractor-friendly
Uses common targets (3% / 5%) so you can sanity-check runs fast.
Backed by Arkco support
Need a second set of eyes? We can help you size for the full install conditions.