Please check manufacturer's specifications. Though wire resistance is usually measured to be only milliohms per foot, a run of a modest distance can quickly add up to enough resistance to cause critical voltage loss. The table below shows the resistance values for stranded copper wire. When measuring the distance of the system wiring, make sure to count the total amount of wire to complete the entire current loop. While 12 volts is the minimum, we highly recommend a few extra volts to spare to help insure that all the calculations were carried out and just in case there's something on the loop that is using more voltage than planned for.
Breathing room is beneficial.
If you've got any questions please don't hesitate to give us a call and one of our Applications Engineers would be glad to help.