how big of a motor can I run?

[arroyojim]

I am hoping to build a hydraulic press for my shop. I do not know how big of a motor I can run with my existing service.
I just spoke with a po.co. engineer and he says I have a 10kva transformer.

I have a 20hp three-phase motor that I would like to use to power the hydraulic unit, so I would probably be looking at a 40hp rotary phase converter.
I think I read somewhere that the in-rush current for starting the 20hp motor would be round 160-170 amps. I don't know off hand what the start up current would be for the rpc.

My existing main/meter panel is only rated for 200A. I am hoping to set things up so I have 200A available to two residential structures and 200A available to my shop.

I will be having a poco engineer out to my place, but am not 100% sure what questions to ask... I think there is a somewhat loose restriction on motors at 10hp, but I'm not real sure why that is...


Any suggestions/advice much appreciated.

 

[jumper]

I would advise you to contact an Electrical Contractor.

I am closing this thread, in accordance with the Forum rules. This Forum is intended to assist professional electricians, inspectors, engineers, and other members of the electrical industry in the performance of their job-related tasks. However, if you are not an electrician or an electrical contractor, then we are not permitted to help you perform your own electrical installation work.


If I have misjudged the situation, if for example this project is related to your work, then send me a Private Message. If you can show me that I am wrong, and that you are a licensed electrician (or at least a licensed apprentice), then I will reopen your post, and offer an apology for the delay and inconvenience.