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Old 03-09-2015, 01:56 AM   #1
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Default How much genny is enough?

For a 3000 SCR? Going through the threads looks like the Honda 2000kw is popular. For the A/C, tv/dvd (non 12v), charging laptop is 2000kw enough?

thanks

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Old 03-09-2015, 08:19 PM   #2
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Thought Roger and few others would provide their insight.

You need to determine your AC power load from A/C, Frig, Microwave, Battery charger, TV, ... then add ~10% margin. Use worst case starting power loads.
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Old 03-09-2015, 08:35 PM   #3
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I have sent away to Brunswick for a manual. Does anyone have an idea of how many BTUs the factory air is in the 3000SCR? BTW thanks to all who did the links to Brunswick etc for manuals etc.
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Old 03-15-2015, 02:57 PM   #4
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My 3000scr has a Westerbeke Gen set since new. I've seen many of these units pop up on eBay fairly cheap. Boats and R/Vs tend to not rack up monster hours and good used ones are out there.

Good luck ! Besides you can't go wrong with a Honda unit.
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Old 03-15-2015, 03:20 PM   #5
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Yes figure out your watts load. I have a Marine Air 10,000 with reverse air unit in my 01 3000 scr. The thing with then 2000 kw rated genny is that you might be on the border when the ac kicks in, just fine after it starts up.

I have been looking at a costco smart brand genny for half the price, rated at 2000 for around 600 bucks. It has a yamaha engine. I think Home Depot sells them too.
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Old 03-16-2015, 01:44 AM   #6
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biggerseagar, does your a/c manual state how much power is draws? I'd love a factory westerbeke, but even if I found a used one I think the cost of the install would be cost prohibitive. The yamaha powered one at costco looks good. I have been looking at that one, knowing its probably a bit underpowered and thinking of doubling up and paralleling. For a bit more there is a Champion with 3100 start up and 2800 continuous. Costco's warranty is ridiculous, you could use it for a year and return it. The reputation of the yamaha engine is hard to beat though.
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Old 03-16-2015, 02:21 AM   #7
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Going down to my boat tomorrow ,I 'll look at my ac manual and get back.
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Old 03-16-2015, 02:28 AM   #8
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Thank you sir!
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Old 03-16-2015, 01:28 PM   #9
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Bush, you've kind of hijacked your own thread. Is this about a generator or about an A/C?

I'd suggest starting a separate thread for each.
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Old 03-16-2015, 04:04 PM   #10
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Sorry for the unintentional hijack. My intent was to determine "how much genny is enough" With everyone's help the main issue was identified as the power draw of the A/C. I'll leave it at that and close it out. Maybe biggerseagar can PM me with the draw of his 10,000 btu A/C
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