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Old 07-05-2014, 05:41 AM   #15
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Onan generators have built into the generator over/under frequency and voltage protection. No need to have the surge protector protecting the generator IMO.

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Old 07-05-2014, 06:53 AM   #16
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I sell large generators in my business and I have seen them surge to 360 volts when a regulator goes bad. Maybe the little 7.5 to 12 kw have some kind of protection but I would think they would suge before shutting down.

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Old 07-06-2014, 05:06 AM   #17
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Ronrad, wondering if you also service gens since you sell them? I have had my 10,000 unit to 3 different shops and none have got it back to where it needs to be. Cummins changed the the voltage regulator. that helped for a few hours and then went back to surging and spiking to 136 volts on both legs. Thank goodness for the surge protector!!!
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Old 07-06-2014, 05:55 AM   #18
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I take my small units to Engine Generator Specialities in Madison Wisconsin. All they do is small generators and roof airs. They are the best.

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Old 07-06-2014, 06:25 AM   #19
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Originally Posted by Ronrad View Post
Mounted it today right next to the panel. Works great with the shore line and the genset.

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I did the same on my last coach. There is nothing wrong with mounting it here. The only negative is the transfer switch's logic boards are protected. There is one nuisance. You have to wait for both the protection device's timer and transfer switch's timer before generator power is made available.
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Old 07-06-2014, 09:03 AM   #20
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We had our Progressive installed before the transfer switch because that's where Progressive says it should be placed.
Actually, the Installation Guide gives you instructions for both options without a preference for either.
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Old 07-07-2014, 05:16 AM   #21
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Look at the FAQ section on their website under "Should a hardwired EMS system be installed before or after the Transfer Switch" and I think you will see their clear preference. Also, I have read of discussions with Tommy Fannelli in which he also suggests placement before the transfer switch. While I am leaning toward moving my Progressive in order to protect my coach from more devastating, if rare, cases of problems with the gen set, I won't do so until after I contact Progressive personally. Since they so clearly do prefer protecting the transfer switch, I want to ensure I haven't missed something before moving the Progressive. It's on my list. Others may want to call and report back sooner than I will get around to it.

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