#### KnobnTube

##### Member

Situation is this:

Installing heaters for water on large farm.

Panel is At the barn. First heater is 50 ft away--2nd is 288 ft away from that one. 3rd is 288 ft from 2nd, 4th is 288 ft away from 3rd, 5th is 72 ft away from 4th, 6th is 480 ft from the 5th.

Total load is 27 amps with all heaters running. (#6 is 1466 ft away from panel)

At #2,3,4 and 5 there will be a drop to 4 more heaters 50 ft from those points.

Each heater is 3 amps at 120 volts.

My calculations using 4 different calculators found, have the wire at 300 mcm (4.8% drop)

OMG.

Am I nuts?

These are 120 volt water heaters for horse farm

**Calculator**