Electrical BOS / conductor review

Make the entered conductor result visible.

Calculate voltage drop for a specified conductor before comparing preliminary cable candidates.

Live calculation · retained project context · engineer review

Electrical BOS / conductor review

PV Cable Sizing & Voltage Drop

Calculate the entered conductor’s voltage drop first, then compare preliminary cable candidates with the same circuit values.

CalculatedMethod 2026.08

01 Circuit inputs02 Specified conductor03 Candidate comparison04 Project update

Calculation methodNEU-VD-2026-01

DC, single-phase and balanced three-phase preliminary voltage-drop calculation.

Candidate referenceNEU-CABLE-REF-2026-01

Convenience comparison only; not a jurisdictional ampacity or compliance table.

Release boundaryPreliminary engineering

Not a jurisdictional cable-code table or final compliance decision.

Specified conductor result

2.90 V drop

0.37% of circuit voltage · load-side estimate 777.10 V

Resistance3.608 Ω/km

System factor2.000

Guidance target2.00%

Result stateWithin target

Within the tool’s 3% preliminary guidance band.

Calculation result

Resistance-based voltage drop from the entered circuit values.

Data still required

Actual conductor construction, route and installation conditions can change the result.

Engineer confirmation

Confirm protection, ampacity and local installation requirements before specification.

Preliminary candidate comparison

Section	Drop	Derated ampacity	Loss / year	State
2.5 mm²13 AWG	0.86%	26.40 A	135 kWh	Pass
4 mm²11 AWG	0.54%	36.00 A	85 kWh	Pass
6 mm²9 AWG	0.36%	45.60 A	56 kWh	Pass
10 mm²7 AWG	0.22%	64.00 A	34 kWh	Pass
16 mm²5 AWG	0.13%	86.40 A	21 kWh	Pass
25 mm²3 AWG	0.09%	112.00 A	14 kWh	Pass
35 mm²2 AWG	0.06%	138.40 A	10 kWh	Pass
50 mm²1/0 AWG	0.04%	165.60 A	7 kWh	Pass

The method record is retained with this project. Confirm manufacturer data, route grouping, insulation class, protection and the applicable installation standard before specification.