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Old 02-10-2014, 08:05 PM   #21
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Now that has to be very quiet. How does it do at keeping up with demand?

Mine is slow to throttle up. But I guess you get what you pay for.
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Old 02-13-2014, 04:40 PM   #22
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k, I have Coleman MAch 3 plus. Called tech person at Airxcel and this was his formula to calculate starting amps. This AC has Start kit from factory. Total amps is 15.3 amp. Compressor is 11.9 and Fan on high draws 3.4 amps. Formula is compressor amp x2.5+high fan amp= amps needed for initial start/cycle. So mine comes to 33.15 Amp which requires 3800 watt generator. These are conservative/max estimates. He said that on avg. these ac's with hard start kit will need probably 21-24 amp to startl. So any generator with 2500 running -2800 peak watts will do at sea level. At my altitude of 5000 ft Yamaha 2400 isch will lose 420 running watts. Yamaha has extra surge of 400 watts and that would lose 70 watts for altitude alone not considering high temps that can get above 100F here. So at my altitude Yamaha 2400 ishc will not do. 3000 watt would have no issue if everything else is not drawing amps. Not sure how some people say they are running 13.5 AC with Yamaha 2400 above 5-6000 ft.
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Old 02-14-2014, 11:21 AM   #23
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My suggestion is to buy your generator right the first time because it is cheaper than buying twice. I went for the Honda 3k and haven't regretted my decision once. I typically use it at race tracks but also use it every couple of days to charge the batteries when camping in parks w/o electric hookups. Running in the bed of my truck with the exhaust facing into our campsite you can barely hear it from the road.
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Old 02-14-2014, 02:15 PM   #24
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So mine comes to 33.15 Amp which requires 3800 watt generator.
Do you use 50 Amp service or does your set up trip 30 Amp breakers?
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Old 02-14-2014, 02:20 PM   #25
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Look at the amps on the breaker that your AC is pulling off of in your converter. If it was constantly running amok of that breaker rating, you'd be popping it all day long. If your genny can put out the amps that your A/C breaker is rated for, you should be ok.
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Old 02-15-2014, 12:20 PM   #26
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Can I ask a ignorant question? Besides heavy gas usage what would the downside be of running your TV with a 30amp inverter attached?

This is assuming you don't have loud mufflers. I would think that would be more quiet than a portable generator, less cost than a gen purchase and have enough power to run everything. Understand, this would not be for overnight usage, only for keeping your TT cool during the day and charging batteries.

Like I said, please forgive me if this is an ignorant question.
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Old 02-15-2014, 02:37 PM   #27
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Can I ask a ignorant question? Besides heavy gas usage what would the downside be of running your TV with a 30amp inverter attached?

This is assuming you don't have loud mufflers. I would think that would be more quiet than a portable generator, less cost than a gen purchase and have enough power to run everything. Understand, this would not be for overnight usage, only for keeping your TT cool during the day and charging batteries.

Like I said, please forgive me if this is an ignorant question.
The short answer is your TV alternator is not capable of the kind of current that would be required to power the TT air conditioner. Understand that 30 amps at 120 volts from an inverter would require 300 amps at 12V from the TV. This does not even consider the huge wire size and inverter losses. Even with the inverter connected a few inches from the battery this would be impractical.
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Old 02-16-2014, 09:31 AM   #28
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Here's another generator issue.....can I run just a generator or should I get an invertor generator? Not sure if I need the invertor part to assure that I get clean power to my electronics? I can get a generator for ~$400 bucks but add the invertor part and I'm looking at $800++.

And also, what's this carb specific stuff on a generator? I don't live in Calif. so is that really necessary? That also raises the price.
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Old 02-16-2014, 09:59 AM   #29
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Here's another generator issue.....can I run just a generator or should I get an invertor generator? Not sure if I need the invertor part to assure that I get clean power to my electronics? I can get a generator for ~$400 bucks but add the invertor part and I'm looking at $800++.

And also, what's this carb specific stuff on a generator? I don't live in Calif. so is that really necessary? That also raises the price.
There are two issues at play here. First, your "just a generator" (non-inverter) are typically too noisy. Second, you really should not subject your electronics (TV, refrigerator control electronics, etc) to the "dirty" waveform of a non-inverter generator. This is one time that saving money could cost you in the future. Not to mention irritated neighbors.

If you don't live in California don't worry about the "carb compliant" garbage.
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Old 02-17-2014, 04:03 PM   #30
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There are two issues at play here. First, your "just a generator" (non-inverter) are typically too noisy. Second, you really should not subject your electronics (TV, refrigerator control electronics, etc) to the "dirty" waveform of a non-inverter generator. This is one time that saving money could cost you in the future. Not to mention irritated neighbors.

If you don't live in California don't worry about the "carb compliant" garbage.
Perfect...Thanks Chuck!!!
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