[ I = \fracPV \times \textPower Factor ]
If multiple cables are bundled together, they trap more heat. how calculate cable size
A 5 kW, single-phase 230V heater (PF=1) draws: ( I = 5000 / 230 = 21.7 \text A ) [ I = \fracPV \times \textPower Factor ]
where: P = power in watts (W) V = voltage in volts (V) the cable's capacity drops.
capacity in all environments. You must multiply the required current by factors that account for heat: If it's hotter than , the cable's capacity drops.