Refrigeration condensor unit display Calculation

[brother]

Would like to hear from others. Its been a while since I had to do calcs for refrigeration equipment. Wanted to double check my frige and evap pan calculation. The RLA is 12.9, The MCA is 19 for the condenser unit. The evaporator pan is 5.42, and its MCA is 6.77. This is what is listed on the nameplate for equipment.

I assume they took the 12.9 X 1.25= 19, and 5.42 X 1.25= 6.77. I know the condenser unit conductors are rated at 1.25 of the amps, but is the evap unit required to be so too when it's on the same branch circuit?

And would the OCPD be the added current of the 175% (maxium) calculation of the condenser unit only? Basically, 12.9 X 1.75=22.575 + 5.42=27.99 amps. or is it both of the 125% current added, 19+6.77=25.77? I know its' a technicallity, but it's been found that the these 2 are on the same branch circuit and it's on a 20amp breaker, and it was brought up that it needed to be at least a 25amp breaker.

So far nothing has tripped.

 

[GoldDigger]

The MCA allows for both a continuous load and motor starting. It does not mean that the breaker will actually see that current. So the breaker may well never trip. But it is almost certainly bring loaded past 80%, and I do not think a 20A breaker is code compliant here.

 

[electricg]

The MCA allows for both a continuous load and motor starting. It does not mean that the breaker will actually see that current. So the breaker may well never trip. But it is almost certainly bring loaded past 80%, and I do not think a 20A breaker is code compliant here.

I assume this is an individual branch circuit, so I do not think the 80% would apply. Unless, I would have to ask this question, is the evaporator pan heater considered a continuous load?