What is the max 'allowable' voltage allowed to be dropped due to wire resistance on a 24VDC signal wire? I believe the CEC says 6% but didn't know if NEC was the same.
sorry, the load isn't irrelevant, but I can determine the drop based on the load current....I'm just looking for what the NEC says is acceptable, if it says anything at all about it.
NEC only suggest a limit on higher voltage and i know of no rule on 24 volts. Check the device specs for min volts. I would think 22 volts would not likely cause trouble. Been told some newer air cond units are very pick about 24 volts ac