Voltage drop
It’s 20 m to get there — how much do I lose on the way?
Advanced conditions and parameters · Copper · Single-phase (230 V)
Result
Voltage drop1.08%
Voltage drop in volts2.5V
Limit applied5%
This run uses 1.08 % of the 5 % limit for the whole route from the meter to the load. The compliance verdict is given on the complete route, the main run included (Art. 5.2.5.1).
Calculation assumptions
The result holds under the conditions below. If your situation differs, change the values in the advanced section.
- 230 V single-phase / 400 V between lines on three-phase
- a single circuit run — the limit applies to the whole route from the meter to the load, so the drop on the main run and on intermediate boards adds up separately
- copper conductor
The results are indicative and do not replace a design checked by a registered electrician. Every tool states its assumptions.