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#98999 - 07/05/06 07:13 PM Generator v. SDS  
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,489
Michigan USA
Is it just me or are others wrestling with Kohler about how to lift the bonding on their generators so they can be used with the "neutral" on bonded at the generator? The reason for the question is I am seeing small generators (10 kw) 120/240 single phase generators coming from the factory with a tag on the generator indicating the neutral is bonded to the frame of the generator and that it can be removed in the field for applications where it should not be bonded. Example: Back up generator permanently installed using a 2 pole transfer switch. The neutral is bonded to the frame of the generator and the neutral of the utility is also bonded at a different location. Now we all know the rules about bonding the neutral in two places and this scenario is a violation. Now here's the hook- Kohler tells you that the neutral is bonded to the frame but they don't tell you how to lift the bond or where the bond is. I can read specs and prints and they are silent about this bonding or shall I say un-bonding.
It is standard procedure for Kolher to bond the neutral to the frame at the factory for testing and they always ship them out from the factory with the neutral bonded to the frames and as such they are separately derived systems.

Maybe the title should be SDS v. Not

[This message has been edited by George Little (edited 07-05-2006).]


George Little

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#99000 - 07/05/06 10:23 PM Re: Generator v. SDS  
Yoopersup  Offline
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Joined: Mar 2003
Posts: 822
Michigan
George
The Generator folks I;ve worked with say they send them out that way because there not sure if they'll be hooked up as a Seperately derived system or not so they can be corrected in the field if required. Such as 3 phase 4 wire with a 4 pole is a S.D. system 3 phase 4 wire with a 3 pole transfer switch is not.Depends on the transfer switch in each case.
Yoopersup


#99001 - 07/05/06 10:27 PM Re: Generator v. SDS  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 822
Michigan
George
The Generator folks I;ve worked with say they send them out that way because there not sure if they'll be hooked up as a Seperately derived system or not so they can be corrected in the field if required. Such as 3 phase 4 wire with a 4 pole is a S.D. system 3 phase 4 wire with a 3 pole transfer switch is not.Depends on the transfer switch in each case.
Yoopersup


#99002 - 07/05/06 10:36 PM Re: Generator v. SDS  
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,489
Michigan USA
Ernie, I don't have a problem with that- Sending them out that way, but Kohler don't tell you anything about where the jumper is or what to do to change it. They only show a skimpy block diagram of the components and nothing about any bonding jumper. I've always thought of Kohler as a rather reputable company but I'm having second thoughts now since their technical support is so lax. Generac and Onan know how to handle this situation so they get my vote.


George Little

#99003 - 07/05/06 11:04 PM Re: Generator v. SDS  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,103
Estero,Fl,usa
I spent some time on the web site and this is not in any of the PDFs about installation.
Have you tried asking the tech support?
I think this should be on a big label somewhere.


Greg Fretwell

#99004 - 07/06/06 01:22 AM Re: Generator v. SDS  
frenchelectrican  Offline
Member
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
for 10 KW Kolher generators the bonding strap will be loacted in main control panel near the circuit breaker you will see the netural termail strip it is small wire or band.

that where the bonding strap will be located

but for other generator manufacter it is straght foward job i useally ask them in ahead of time and they will do it before they arrive in the site or location where the generator will be at and i just make quick look to double check make sure doing the proper way

Merci , Marc


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



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