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Kohler 12 RES Installation


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  #1  
Old 10-01-2018, 03:47:22 AM
zaphod zaphod is offline
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Default Kohler 12 RES Installation

New guy here: just bought a Kohler 12 RES to replace a Winco 8 KW standby. Not worked on gensets before. I have 3 wires coming off the ATS marked G1,2 and 3 and 4 wires coming off the geneet marked L0 L1 L2 and Ground. One wire in each set is wrapped white L0 and G2. This wire was budled to ground on the original Winco. The ground from the Kohler is wrapped green. L0 is neutral.
What connects to what? Mystified. Cheers, Zaphod
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  #2  
Old 10-01-2018, 09:18:51 PM
LWB250 LWB250 is offline
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Default Re: Kohler 12 RES installation

If you don't know, hire an electrician. This is not something someone can advise on via the web.

Really.
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  #3  
Old 10-01-2018, 11:40:26 PM
Zephyr7 Zephyr7 is offline
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Default Re: Kohler 12 RES Installation

It’s odd that you’d have three control wires coming from the ATS. Normally you’d just have two, which is why it’s commonly referred to as “two wire start”.

The heavier four leads are phases, neutral, and ground. These carry the power.

Now for the serious stuff: aside from the extra control lead, the power side is really basic 101 level stuff for both the labeling and the color codes. If you don’t immediately recognize what you’re looking at, you really should hire someone qualified to do the installation for you. You can cause a lot of damage if you wire something incorrectly, and worse, you can create a very dangerous situation that could potentially kill someone.

Bill
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Old 10-02-2018, 07:08:25 AM
reid070 reid070 is offline
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Default Re: Kohler 12 RES Installation

Quote:
Originally Posted by Zephyr7 View Post
It’s odd that you’d have three control wires coming from the ATS. Normally you’d just have two, which is why it’s commonly referred to as “two wire start

Bill
It’s sounds to me like he is using the ATS that was hooked up to his old generator, and it used 3 wire start.

Steve
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  #5  
Old 10-03-2018, 09:47:55 PM
LWB250 LWB250 is offline
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Default Re: Kohler 12 RES Installation

Being a Winco it's highly likely that if it didn't have the integrated contactor style ATS they used with their sets at that time it's a Zenith or Westinghouse ATS and is set up for 3 wire start.

I'm not familiar with Kohler's current line of controls, but they've done two wire start for almost a century, so I doubt very much that new unit is going to accommodate 3 wire start.

Again, the potential for damage or even injury is quite high here. Hire a professional and shift the risk to them.

Dan
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Old 10-04-2018, 06:50:50 PM
zaphod zaphod is offline
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Default Re: Kohler 12 RES Installation

Yeah.
Anyway: thanks for the replies. Apparently it's L1 - G1 etc... and the ground is redundant as it's coupled to field in the genset. I thought it was a pretty simple question.
Zaphod
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Old 10-04-2018, 08:44:47 PM
Birken Vogt Birken Vogt is offline
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Default Re: Kohler 12 RES Installation

I didn't want to pile on, but I would have given the same answer.
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  #8  
Old 10-05-2018, 08:41:02 PM
LWB250 LWB250 is offline
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Default Re: Kohler 12 RES Installation

Quote:
Originally Posted by zaphod View Post
Yeah.
Anyway: thanks for the replies. Apparently it's L1 - G1 etc... and the ground is redundant as it's coupled to field in the genset. I thought it was a pretty simple question.
Zaphod
In context it might be, but anyone in this business with half a brain and experience isn't going to address the issue without more specific information and/or a photograph.

Not to mention you made your lack of experience known, which was also a red flag to steer clear.

Too many of us have been burned by a well meaning suggestion or direction that seemed obvious or simple to us, only to have the user damage equipment or get hurt. Then it's suddenly all our fault. Not a good situation to be in.
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  #9  
Old 11-05-2018, 05:33:48 PM
zaphod zaphod is offline
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Default Re: Kohler 12 RES Installation

Well, I have enough egg on me to make an omelette. It turns out the Winco ATS is a low voltage start and the one I need is a Kohler RDT series high voltage start so $1000 later its in. Now to change the overspeed sensor which I understand is a bear.
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  #10  
Old 11-05-2018, 07:36:22 PM
Mark Dieckmann Mark Dieckmann is offline
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Default Re: Kohler 12 RES Installation

Umm....The Kohler 2 wire start control is 12volt DC / battery voltage. Not exactly what I would call high voltage. The RDT should be fine and will require two wires connected to terminals 3&4 in the switch and generator to operate. Good luck
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