12V target

How much voltage drop for 12V?

Low-voltage circuits are sensitive to drop, so the percentage limit is usually tighter than on mains wiring.

Example

A practical 12V target

A 12V circuit is often designed around a 3 percent voltage drop target, which equals 0.36 V.

Open the main voltage drop calculator.

Use the inverse calculation to size the conductor.

Read the guide for practical acceptable drop assumptions.