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HVAC - HCAR Breakers vs conductor size being protected

Thread starter ngd4130
Start date Mar 10, 2022

Merry Christmas

Status: Not open for further replies.

don_resqcapt19

Moderator

Staff member

Mar 10, 2022

#21

jim dungar said:
I think it is just the ones listed to UL489. I wouldn't be surprised if it is near 30 years now

Yes, UL 489, but that would cover most breakers used for HVAC systems, I think.

J

jim dungar

Moderator

Staff member

Mar 10, 2022

#22

don_resqcapt19 said:
Yes, UL 489, but that would cover most breakers used for HVAC systems, I think.

For panelboards yes, but maybe not for control panel ones.

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