Generator for AC

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Love MACs
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Generator for AC

Post by Love MACs »

What is the smallest size generator and what wattage & horse power are required to run a 5000btu Air Conditioner :?: I just got my hands on two, four yr old AC units, both 5000btu for free. I saw this generator on ebay for a great price, unknow brand:
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# Output Voltage: 110V/60HZ
# Max Power: 1200 Watt
# 2.5 HP/3600 RPM EPA Engine
# 2 Stroke 63 CC Cylinder Air-Cooled
# Gasoline and Oil Rate: 50:1
# Fuel Tank Capacity: 4 Liter
# Hand Recoil Start
# Noise level (dB): 68

Thinking hard and serious about an AC Mod. :wink:


Allan
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Re: Generator for AC

Post by Sumner »

The AC units should have their power requirements (amps used) listed on a tag on them somewhere. Take the amps times 110 to 120 for the wattage or see what amperage the generator will put out continuous and for a short period. The generator you listed said "maximum" wattage was 1200, so that might not be continuous. If it is, that would be about 10 amps (1200/115). I would look for one that wasn't running right at max output.

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Re: Generator for AC

Post by jaguar496 »

Hi LOVE MACs: We had a 5000btu that ran at 800watts on hi, and needed 1200watts to start it. recently we bought a Honda 2kw generator at our local consignment store for $500.00, with only 10 hours on it. our a/c is the cruiseair that WM sells for $1000, altho we bught one for $300 at the consignment store, and the generator does not slow down at all when running the a/c on hi, or when we start the a/c, and we have a pig tail that connects to our 110v system so that while underway/on the hook, we can run the a/c, have coffee, microwave as we wish. If you do put in an a/c system, I recommend a larger capacity generator, so that it is not alway's running at max speed. the Honda has an economy setting, and slows down to a few hundred rpm when little draw is necessary. enjoy the a/c, sure makes life pleasant. :) Alice and Stew of "THE RESTLESS TWO"
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Re: Generator for AC

Post by Sumner »

Just a side note, but if I had 110 on the boat from the shore or a generator I sure would have GFI protection from the start. Is that built into the Honda generators or any of them? I have GFI on every circuit in our house...

Image

...the first outlet located in the shop under the ..........

Image


House Build...

.......distribution panel is a GFI outlet. Every other outlet on that circuit is protected by the first one. I use to do odd jobs for people and had a GFI in an outlet box with a cord/plug to the box. On a job site I plugged it into their power and my tools into it. I'm a firm believer in using these.

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Last edited by Sumner on Mon Jul 05, 2010 3:42 pm, edited 1 time in total.
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Re: Generator for AC

Post by nedmiller »

I bought a Honda 1000i and then worked really hard to match appliances that would run off the Honda. AC was the hardest. The real issue is start up and all 5000 btu AC units would not work. I would buy one, then carefully take it out of the package and try it out. If they require too much start up power for too long, the Honda clicks the overload. I finally found a Haier AC at Target (less than $100) that would work and we've used it for a couple of years now. I have it on this trip in Arkansas but I'm away from the boat right now. If you want the model number, I can get it for you. Even the Haier will kick the overload if it cycles too soon. We start the fan on hi first, then turn on the AC to the coldest setting. It rarely cycles then and is usually just enough cool for our summers.
The advantage of the Honda 1000i is that it is lighter and a bit smaller. I think it's the perfect generator for the Mac but you have to take the time to fit the right loads. The inverter generators are also safe for computers and other electronics.
SILK :macx:
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Re: Generator for AC

Post by kmclemore »

nedmiller wrote:I finally found a Haier AC at Target (less than $100) that would work and we've used it for a couple of years now.
Is this the one?

http://www.target.com/Haier-Mechanical- ... Page=1&rh=

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Re: Generator for AC

Post by jaguar496 »

HI AGAIN Y'ALL: our :macm: has 6 gfi outlets. Once again, we hve a 2KW Honda generator. stew
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Re: Generator for AC

Post by Sumner »

jaguar496 wrote:HI AGAIN Y'ALL: our :macm: has 6 gfi outlets. Once again, we hve a 2KW Honda generator. stew
Not sure if you know it or not, but maybe this will help someone. If you put the GFI outlet as the first in the circuit the outlets after it are all protected. Now if you have a distribution panel with fuses/breakers for different circuits then you would need a GFI on each of those circuits,

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Re: Generator for AC

Post by Russ »

Sumner wrote:Just a side note, but if I had 110 on the boat from the shore or a generator I sure would have GFI protection from the start. Is that built into the Honda generators or any of them? I have GFI on every circuit in our house...

Image

...the first outlet located in the shop under the ..........
That's a clever idea. Yes, you can chain the circuit to the GFI plug to provide protection to those outlets down the line. Our GFI outlets work this way in the kitchen and bathrooms.

I'm not sure how a GFI outlet work work on a free floating boat. There isn't any "ground" to ground to.
Shore power yes, floating boat, not so much.

--Russ
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Re: Generator for AC

Post by Russ »

Love MACs wrote:What is the smallest size generator and what wattage & horse power are required to run a 5000btu Air Conditioner :?: I just got my hands on two, four yr old AC units, both 5000btu for free. I saw this generator on ebay for a great price, unknow brand:
Image
# Output Voltage: 110V/60HZ
# Max Power: 1200 Watt
# 2.5 HP/3600 RPM EPA Engine
# 2 Stroke 63 CC Cylinder Air-Cooled
# Gasoline and Oil Rate: 50:1
# Fuel Tank Capacity: 4 Liter
# Hand Recoil Start
# Noise level (dB): 68

Thinking hard and serious about an AC Mod. :wink:


Allan
I would probably steer away from any 2 cycle solution like this one. It's probably a very cheep engine and no doubt puts out a lot of stink. The Honda generators are much more expensive but extremely quiet and efficient.
Also, I would question the noise level of the above genset. I've got a cheap Chinese Honda knock off that claims similar noise ratings to that of the Honda. No way, it's a lie. The Honda is vastly superior.


--Russ
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Re: Generator for AC

Post by Sumner »

RussMT wrote:I'm not sure how a GFI outlet work work on a free floating boat. There isn't any "ground" to ground to.
Shore power yes, floating boat, not so much. --Russ
I have all of the GFI outlets under the panel, so in case a circuit trips I can check the GFI and or the breaker without having to go around the house to find the GFI. I've had people claim they are too sensitive to use on all circuits. I've maybe had 1 trip in the 4-5 years since I finished the house and I have at least a dozen outside outlets on the side of the house with the covers on them. I feel much safer with them in the house and they could be added to old wiring in the house. The outlets cost much less than the breakers also.

It has always been my understanding that they compare the current going out on the hot wire to that returning on the neutral and if they aren't the same they trip as the current is going somewhere that it shouldn't be. The ground doesn't come into play. I've used them at people's houses that don't have grounded outlets, only the old 2 prong. I would use one of those 3 to 2 prong adapters on the end of the power cord that was coming from the box with the GFI in it.

c ya,

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Re: Generator for AC

Post by Catigale »

It has always been my understanding that they compare the current going out on the hot wire to that returning on the neutral and if they aren't the same they trip as the current is going somewhere that it shouldn't be. The ground doesn't come into play.
Correct
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Re: Generator for AC

Post by TAW02 »

GFI's are great safety devices.

Also I would add so are Carbon Monoxide detectors. Cheap and reliable. I have always used two inside my :macm: and only paid 15 bucks for both.

In case one fails, hopefully the other will work.

Just yesterday my wife was telling me about a story she heard on tv about a couple being found dead aboard their boat. Monoxide poisoning, odorless, tasteless but deadly.
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Re: Generator for AC

Post by nedmiller »

Kevin,
RE: Haier AC from Target
Yes, that looks like it. It's the mechanical one. Looks like the price has either gone up a bit or I got it on sale. I used it last night on the Mac down here in Arkansas and we had to turn it down to mid-range because it got too cool in there!
Good little machine to run off the Honda 1000i.
SILK :macx:
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Re: Generator for AC

Post by Russ »

TAW02 wrote:Also I would add so are Carbon Monoxide detectors. Cheap and reliable. I have always used two inside my :macm: and only paid 15 bucks for both.
FWIW, we recently had an "energy audit" done and the guys told us that CO detectors have a lifespan and not all are made equal. They recommended a brand that they claimed was superior. Now I can't remember the brand or the lifespan, but I always assumed most were about equal and never knew they needed replacing after a certain point.

There is no way I would run a generator at night without a CO detector. You read all the time about people dying from generator exhaust.
I've never had a CO detector on a boat. During the day the symptoms are easy to detect if you are looking for them. Be alert to them.

RE: GFI's. Interesting. Now I understand how they work.

--Russ
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