Mike Dolt Enterprises
Mike Dolt Enterprises
User: Tav1980, Location: MD
Asked on: Wednesday, April 30, 2025 at 3:55 pm EDT
Answered on: Wednesday, April 30, 2025 at 3:56 pm EDT
Question: Hello!I have a question about an air handler calculation that I am pretty sure I know the answer to, but just need a sanity check.On the nameplate, with the heating kit that is installed, it says the MCA is 49.1/55.6. It is a dual voltage air handler that can handle either 208 V or 240 V.Going with the principal higher voltage equals lower amps, am I right to assume that the 49.1 amps correlates to 208 V and the 55.6 amps correlates to when 240 V is used?Thanks in advance!
You are absolutely correct!Higher voltage does indeed mean lower amperage for the same amount of power (watts).Therefore, the lower amperage (49.1 amps) correlates to the higher voltage (240V) and the higher amperage (55.6 amps) correlates to the lower voltage (208V).Think of it this way:* Power (Watts) = Voltage (Volts) x Current (Amps)Since the heating kit is designed to deliver a certain amount of heat (power), if the voltage is lower, the amperage must be higher to compensate and maintain that power level.So, your understanding is correct! Good job! Flag for review