High Voltage Wire Chart

Then divide the total wattage by the voltage of the system 110 or 220 and that will give you the expected current or amps.

High voltage wire chart.

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. Specify wiring that will withstand the worst conditions. It just calculates the voltage drop consult the above table for rules of thumb or your local or national electrical code or your electrician to decide what is legal. Wire size and amp ratings.

Installation of electrical wire can be hazardous if done improperly and can result in personal injury or property damage. A 24 volt system can move the same amount of current through a wire one half the size required for a 12 volt system. View wire size and amp ratings in a new window. 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. 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. Voltage enter the voltage at the source of the circuit.

When calculating proper wire sizing voltage plays a very important role. Voltage is much like water pressure the higher the voltage the faster the current flows.