3% Voltage Drop rule for Instruments?


Thread Starter


I am to power a remote small system that contains a small PLC (10W)with 24VDC supply. The specs voltage rating is 18VDC to 24VDC, if I apply the 3% rule (for 1000 feet) the cable size is large, but if I size it per the spec even a cable with 10+% still meet the power critiria. I think that as long I meet the instrument power specs that should be technically acceptable, or do I have to size it per the 3% voltage drop?.
Thanks in advance for your time & knowledge.