High Voltage Wire Chart

Installation of electrical wire can be hazardous if done improperly and can result in personal injury or property damage.

High voltage wire chart. Specify wiring that will withstand the worst conditions. Voltage enter the voltage at the source of the circuit. The wire size chart below shows allowable ampacities of insulated conductors rated up to and including 2000 volts 60 c through 90 c 140 f through 194 f not more than three current carrying conductors in raceway cable or earth directly buried based on ambient air temperature of 30 c 86 f. View wire size and amp ratings in a new window.

For example there are wire types designed for resistance to sunlight exposure high temperatures and direct burial. 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. Voltage is much like water pressure the higher the voltage the faster the current flows.

Wire size and amp ratings. 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. Then divide the total wattage by the voltage of the system 110 or 220 and that will give you the expected current or amps. For motors it is recommended to multiply the nameplate fla by 1 25 for wire sizing.

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. Wiring and voltage voltage is much like water pressure.