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#32422 - 12/22/03 08:33 PM Can I calculate this like a cooking unit branch circuit?  
Edward  Offline
Member
Joined: Dec 2002
Posts: 308
California
I have a client who has two shirt printing machines. One 240V@22Amps and other 240V@30Amps. Can I treat this installation like a dwelling cooking unit branch circuit calculation?

Pull a 50A feeder and use #8 or #10 taps for two different 30A plugs.

PS. machines are heating units to dry the ink on the shirts.And this is in a residential garage.

Please give code sections.

Thanks
Edward


Thanks
Edward

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#32423 - 12/23/03 08:17 AM Re: Can I calculate this like a cooking unit branch circuit?  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
It seems that 210.21(B)(3)would prohibit this.

BTW,
Are the loads continuous and/or simultaneous?

[This message has been edited by Redsy (edited 12-23-2003).]


#32424 - 12/23/03 10:58 AM Re: Can I calculate this like a cooking unit branch circuit?  
earlydean  Offline
Member
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
I would worry about zoning. Not too many towns allow businesses like this in a garage, and if they do, now you have a different occupancy to worry about. In a non-separated mixed occupancy there may be issues with the fire rating for the building. The BO or FM may require fire rated sheetrock and/or sprinklers to keep the garage business from burning up the house.
Electrically, I would have to re-compute the loads on the service. Do you need to upgrade the service for all this additional equipment?


Earl

#32425 - 12/23/03 12:01 PM Re: Can I calculate this like a cooking unit branch circuit?  
Edward  Offline
Member
Joined: Dec 2002
Posts: 308
California
Redy,
Loads may be continuous and on at the same time.

Earlydean,
I do not need to upgrade the main panel. I was going to use a 50A braker from the subpanel.


Thanks
Edward

#32426 - 12/23/03 05:10 PM Re: Can I calculate this like a cooking unit branch circuit?  
hbiss  Offline
Member
Joined: Dec 2003
Posts: 886
Hawthorne, NY USA
See Article 422.10(A) as well as 422.11 (D) &(E).



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