Maximum length of DC 12 V 1.0A power supply cable

CHATBOT ANSWER

The maximum length of a DC 12V 1.0A power supply cable depends on the wire gauge, current, and voltage drop. The maximum length of copper wire with a 2% voltage drop for a 12V system is approximately 8 meters for gauge #10 (5.26 mm²) and approximately 32 meters for gauge #2 (33.6 mm²) ¹.

You can use the following formula to calculate the maximum length of the wire:

L = U / (R * I)

where L is the maximum length of the wire, U is the voltage, R is the electrical resistance of the wire, and I is the current ².

For example, if you have a 12V system with a maximum 2% voltage drop and a current of 1.0A, the maximum total length of the wire back and forth can be calculated as follows:

R = 2.22 x 10^-8 Ω·m (for copper)
L = U / (R * I)
L = 12 V / (2.9 x 10^-3 Ω/m * 1.0 A)
L = 8.3 meters

Please note that this is an approximation and the actual maximum length of the wire may vary depending on the wire gauge, temperature, and other factors ¹.