Panel Size for Group of Motors

[faresos]

Hello Everyone,

I have a questions with regards sizing a panel feeding group of motors. There are multiple of motors with different sizes (2)125HP & (3)25HP. The vendor claims the actual HP used for the (2) 125HP is 105 &73HP and for the 25HP's is 20HP. Some of these equipment will have VFD's. My question, can we size our service based on the actual HP used or the motor size name plate (125% of the largest motor and 100% for the rest)?

Thanks,

 

[ptonsparky]

No to the guestimated HP.

Yes, to the nameplate.

Once you get into factories and larger industrials, IDK how they adjust for those.

 

[gadfly56]

No.

Priest: Are you married or single?

Parishoner: Yes, father.

Is that a "no" to both options?

 

[iwire]

You must use the table value based on the labels HP, not the HP the vendor claims

 

[ptonsparky]

Priest: Are you married or single?

Parishoner: Yes, father.

Is that a "no" to both options?

You're to fast...

 

[gadfly56]

You're to fast...

Been talking to my wife, eh?

 

[Jraef]

And.... the circuit for the VFDs must be sized at 125% of the VFD's rating, not the motor rating.

 

[faresos]

Thank you all for the replies. I was thinking the same way but I thought I double check if there is some kind of exception that I'm not aware of.

Sam