Electrical power/ CALCULATOR
DC cable voltage drop
Estimate copper-cable voltage drop, percentage loss and heat at a steady current.
Measure from the source to the load; the formula includes the return conductor.
Use a realistic continuous operating current, not only a device label.
Use the actual conductor cross-sectional area.
Nominal DC system voltage.
Cable voltage drop
0.33 V
Voltage drop
1.37 %
Cable heat loss
16.41 W
Copper resistivity of 0.0175 Ω·mm²/m at a reference temperature, equal positive and negative conductors, steady DC current and no connection resistance. Temperature, terminals, fuses, routing and ampacity are excluded.