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#167486 - 08/13/07 07:54 PM 445.18 Disconnect at Generator location & type  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 840
Michigan
445.18 requires a disconnect at the Generator location. I read this to be a Fused or Breaker type . 240.21 Conductors must be protected at the point where they receive there supply. I feel the disconnect also should be close to the generator location. .other Opnions please??


2017 / 2014 NEC & Related Books and Study Guides

#167490 - 08/13/07 09:30 PM Re: 445.18 Disconnect at Generator location & type [Re: Yoopersup]  
wire_twister  Offline
Member
Joined: Jul 2007
Posts: 265
Georgia USA
We sometimes put in generators for cell phone equipment, most are Generac sets. These have breakers on the gen-set where the conductors hook to the set, not what I consider accesseble though, they are inside the gen-set cabinet which is usualy locked.


Jimmy

Life is tough, Life is tougher when you are stupid

#167575 - 08/15/07 06:23 PM Re: 445.18 Disconnect at Generator location & type [Re: wire_twister]  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,328
Alaska
Be cafeful Jimmy by using the breaker that comes with the equipment. It may be considers as supplemental OCP thus does not meet protection requirements. It should state in the lititerture that come with the genset. I am not familar with Generac so you may be right and I may be wrong. The paperwork that come with out to tell you what size of diconnect to install. Also do not be a retard like my self who put the genset leads on the bottom lugs. The genset is the line not the load.


"Live Awesome!" - Kevin Carosa

#167578 - 08/15/07 06:57 PM Re: 445.18 Disconnect at Generator location & type [Re: sparkyinak]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 840
Michigan
This is a very large Generator and came from the factory without a disconnect on it. Thus the question.Owner wants to install the disconnect same room aprox. 40-70 ft away,


#167581 - 08/15/07 08:39 PM Re: 445.18 Disconnect at Generator location & type [Re: Yoopersup]  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,328
Alaska
Closer the better, in sight of not to exceed 50 feet.


"Live Awesome!" - Kevin Carosa

#167591 - 08/16/07 12:56 AM Re: 445.18 Disconnect at Generator location & type [Re: sparkyinak]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,141
Estero,Fl,usa
How do you protect the conductors and the generator from a fault in that 50 feet? Are we assuming a short would stall the generator?


Greg Fretwell

#167610 - 08/16/07 10:16 AM Re: 445.18 Disconnect at Generator location & type [Re: gfretwell]  
sparkyinak  Offline
Member
Joined: Jul 2007
Posts: 1,328
Alaska
The disconnect needs to be close as practical not to exceed 50 feet. The 50 foot rule is somtimes it is not safe to be right at the equipment or if the equipment is elevated


"Live Awesome!" - Kevin Carosa

#167699 - 08/17/07 09:30 PM Re: 445.18 Disconnect at Generator location & type [Re: sparkyinak]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 840
Michigan
Show me the Code sections ? 50ft and within sight is in mtrs .This Generator is 13.8 volts .


#167702 - 08/17/07 10:33 PM Re: 445.18 Disconnect at Generator location & type [Re: Yoopersup]  
frenchelectrican  Offline
Member
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
Originally Posted by Yoopersup
Show me the Code sections ? 50ft and within sight is in mtrs .This Generator is 13.8 volts .


if i am reading this right this is a low voltage or high votlage ??

13.8 volts or 13.8 KV ??

if it is 13.8 KV there is few other rules will show up with this type of voltage i am not too sure where it land but part of it will be not in the NEC

Merci , Marc


Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)


#167707 - 08/18/07 08:24 AM Re: 445.18 Disconnect at Generator location & type [Re: frenchelectrican]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 840
Michigan
It is 13.8 KV and Yes it is part of the NEC as its in a hospital not utilty owned.


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