rated power input

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albert rangel

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In a 3 phase 208 air conditioning unit, I hace 37kw cooling,21kw heating and on the name plate there is 17,600 watts rated power input. Which do i use fro breaker and wire size? Why is power input lower than heating and cooloing KW?
 

bob

Senior Member
Location
Alabama
Would you use the heating and A/C at the same time?

The op says
In a 3 phase 208 air conditioning unit, I hace 37kw cooling,21kw heating and on the name plate there is 17,600 watts rated power input. Which do i use fro breaker and wire size? Why is power input lower than heating and cooloing KW?


Pierre
Why would it matter? Neither the 37kw cooling or 21 kw heat relate to the 17.6 kw input listed.
Albert
There should be a nameplate on the equipment with the max OC device and the minimum ampacity of the conductors.
 
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