Author Topic: Kohler 7CM21-RV generator  (Read 17743 times)

Offline Van

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Re: Kohler 7CM21-RV generator
« Reply #45 on: July 16, 2012, 07:25:19 PM »
Well all that being said, I thin I learned how this style/vintage gens are set up for 120V and 120/240V thanks y'all  :) made a template and sized it in the old ac condenser comp, gonna have to do a lil' alteration so I can get it mounted in there, we're on a roll! ;)
IF YOU'RE NOT LIVING ON THE EDGE, YOU'RE TAKIN UP TOO MUCH SPACE.

Offline lostagain

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Re: Kohler 7CM21-RV generator
« Reply #46 on: July 17, 2012, 07:17:14 AM »
V. Man, I can see having to do another trip down to your country to see your genny install, LOL.

JC
JC
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1977 MC5C, 6V92/HT740

Offline Van

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Re: Kohler 7CM21-RV generator
« Reply #47 on: July 17, 2012, 12:05:24 PM »
Come on down JC. The weather is fine ;D
IF YOU'RE NOT LIVING ON THE EDGE, YOU'RE TAKIN UP TOO MUCH SPACE.

Offline Fredward

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Re: Kohler 7CM21-RV generator
« Reply #48 on: July 18, 2012, 11:31:03 AM »
Just an observation based on my experience. I have a 7CKM21-RV which has two 120V breakers. I connected the output from those two breakers and fed it into my 30amp panel. Seems to work fine. It will run two roof airs.

But I've noticed the voltage regulation isn't very consistent and have heard that complaint about these older 7K Kohlers. Seems like the hotter the ambient temperature gets, the lower the output voltage gets. I know how to adjust the rheostats on the regulator but it will run all day at about 123 volts until things start getting hot; then the voltage will work its way down to about 108. Of course the current increases as the voltage drops. I usually only run one AC with it and seem to get by.

FWIW - Fred
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Offline Van

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Re: Kohler 7CM21-RV generator
« Reply #49 on: July 20, 2012, 02:57:46 PM »
Fred, that's what I decided to do. Being as the two hots are joined and jumped before the breakers. Speaking of breakers, does any one have a lead on replacements the two on this unit are shot. 25amp, thanks ;)

   Van
IF YOU'RE NOT LIVING ON THE EDGE, YOU'RE TAKIN UP TOO MUCH SPACE.