
Appendix C Wire Diameter and Transmission Length for 24V AC
When the wire diameter is a fixed value and 24V AC voltage wastage rate is below 10%, the recommended
maximum transmission length is as follows(For the AC power supply device, the biggest voltage wastage rate is
10%. For example, a device with 80VA rated power, being installed 35 feet (10 meters) away from the voltage
transformer, the minimum wire diameter is 0.8000mm).
21