Voltage Drop Multiple Legs
Voltage Drop With Multiple Legs
There are situations where a run of a conductor must travel over a great
distance like parking lot lighting and street lighting. In a situation like
these, there are loads located different distances from the source on the same
circuit. So the calculation becomes a multi part one where each leg is
calculated separately based on the change in load current and the change in wire
The calculation for a problem like this is nothing more than separate
calculations for each leg based on distance and wire size.
When each leg has been calculated, then the total voltage drop can be
determined by adding the voltage drop of each leg. This amount should not exceed
the recommendations of the NEC or provide less voltage than each apparatus
requires for proper operation.