MCA for panel schedule load?

[Nickhxc4life]

Hey guys,


So I get where MCA, FLA and MOCP all come from but what I'm not sure is which numbers I should be using to show on my panel schedules.

Is it acceptacle to take 80% of MCA and use that as the panel schedule load since it has an extra 25% load added in or should I be using the whole MCA?

Any help is appreciated. Thanks.


Thanks,

 

[david luchini]

Hey guys,


So I get where MCA, FLA and MOCP all come from but what I'm not sure is which numbers I should be using to show on my panel schedules.

Is it acceptacle to take 80% of MCA and use that as the panel schedule load since it has an extra 25% load added in or should I be using the whole MCA?

Any help is appreciated. Thanks.


Thanks,

Use the MCA of the largest motor, or unit that has the largest motor. Use FLA for everything else.

 

[charlie b]

If it is a single point of connection, so that you don't know the individual component ratings, I would use the MCA on the panel schedule.

 

[charlie b]

Use the MCA of the largest motor, or unit that has the largest motor. Use FLA for everything else.

I believe that that is almost the same method the manufacturer uses in order to come up with a MCA for the system. They take 125% of the FLA of the largest motor plus 100% of the FLA for all others, and that is the MCA they publish.

 

[Nickhxc4life]

Thanks,

Yes these are all single point condensers and airhandlers. I'll use the MCA. Thanks for the input.