Voltage is much like water pressure the higher the voltage the faster the current flows.
High voltage wire chart.
Amperes enter the maximum current in amps that will flow through the circuit.
A 24 volt system can move the same amount of current through a wire one half the size required for a 12 volt system.
For example there are wire types designed for resistance to sunlight exposure high temperatures and direct burial.
Installation of electrical wire can be hazardous if done improperly and can result in personal injury or property damage.
View wire size and amp ratings in a new window.
Voltage enter the voltage at the source of the circuit.
Specify wiring that will withstand the worst conditions.
Then divide the total wattage by the voltage of the system 110 or 220 and that will give you the expected current or amps.
The wire sizing guide below provides the minimum wire size needed to limit voltage drops to 5 at a given distance in a 12v or 24v system.
Wire size and amp ratings.
Wiring and voltage voltage is much like water pressure.
For motors it is recommended to multiply the nameplate fla by 1 25 for wire sizing.
Single phase voltages are usually 115v or 120v while three phase voltages are typically 208v 230v or 480v.
The following calculator calculates the voltage drop and voltage at the end of the wire for american wire gauge from 4 0 awg to 30 awg aluminum or copper wire.