Usual values
Note : Power output per phase of a lighting circuit:
common values: 0.3 to 0.8 kW;
maximum values:
110 V: up to 1 kW,
220 to 240 V: up to 2.2 kW.
Note : Power factor:
> 0.92 (compensated circuit or electronic ballast).
Note : Maximum admissible voltage drop (>U) in steady state:
3% for circuits less than 100 m;
3.5% permissible above 200 m.
Note : Cable cross-section:
most commonly (< 20 m): 1.5 or 2.5 mm2;
very long (> 50 m) high-power circuit, to limit voltage drops: 4 to 6 mm², or even 10 mm² (> 100 m).
