The load-wiring-calculator will give you a very simple and quick solution to the problem of calculating the size of wires and maximum load for LED power transmission.

Calculate which wire guage is best to use for a given voltage drop limit and wire length.

Voltage Drop Limit

0 to 99 volts

What's this?

volts

Wire Length (in one direction)

0 to 9999ft/m

What's this?

Load Current

0 to 99 amps

What's this?

amps

AWG

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Invalid Input

How we calculate

This is a calculator for the estimation of the voltage drop of an electrical circuit based on the wire size, distance, and anticipated load current.

Voltage Drop = (WL x 2) x R x LC / 1000

Voltage Drop % = (Voltage Drop / SV) x 100

Where:
WL = Wire Length
R = Resistance
LC = Load Current
SV = Source Voltage

Calculates the maximum wire length of a single round wire of common conducting materials using the formula below.

Wire Length = ( VD x 1000) / (LC x 2 x R)

Where:
VD = Voltage Drop
LC = Load Current
R = Resistance

The resistance is then matched to the corresponding wire gauge value as per the American Wire Gauge standard (AWG).

Calculates the Resistance of a single round wire of common conducting materials using the formula below.

Resistance = (VD x 1000) / (2 x WL x LC)

Where:
VD = Voltage Drop
WL = Wire Length
LC = Load Current

The resistance is then matched to the corresponding wire gauge value as per the American Wire Gauge standard (AWG).

Calculate which wire guage is best to use for a given voltage drop limit and wire length.

Voltage Drop Limit

0 to 99 volts

What's this?

volts

Wire Length (in one direction)

0 to 9999ft/m

What's this?

Load Current

0 to 99 amps

What's this?

amps

AWG

--

Invalid Input