Will a 6000 W continuous duty generator run 2 roof ACs?? Thanks
No a 7000kw struggles in the heat
In theory, it should work. 6000w @ 120 volts equals 50 amps of load. Each AC should draw less than 15 amps, so two AC's would only be 30 amps. However, as you can see from Clifford's post, it may vary depending on how hot it really is and how accurately the unit is rated.
You have to remember that most A/C's are rated at 85 degrees. Kick that up to 105 (which is was a couple days ago in Bishop, Ca), and you have the A/C's pulling more amps as the load is higher as the temp goes up. Plus the engine doesn't like the extra heat either. My 10kw runs 2 A/C's in 105, but will overheat if I try for all three.
When I had Dick Wright custom build my 12kw 3 cylinder genset, I had him give me a radiator that is 50% bigger than needed. Now I anticipate being able to run all three A/C's on my truck in any weather. Good Luck, TomC
That's kind of what I thought I might see if I can find an 8000 I'm looking at light towers. I know the power might not be good enough for computers. Any thoughts? Thanks
Quote from: Flight102C3 on July 30, 2016, 08:38:26 AMThat's kind of what I thought I might see if I can find an 8000 I'm looking at light towers. I know the power might not be good enough for computers. Any thoughts? Thanks
A friend of mine in the construction business started his 4-halogen-light tower up in the storage lot of his shop a few days ago. I thought that the noise would rattle the fillings out of my teeth from 15' away. I moved to 50' away and started getting a headache after about 30 seconds -- and I almost never get headaches. Try it before you buy it.
Powertech makes the most compact 8kw with blow out radiator fan to the outside. Very compact and uses a 3 cylinder Kubota engine. A truck driver friend of mine had one on his truck sleeper (big ARI sleeper with everything) and had over 23,000 hours on it when he sold the truck. Only replaced the gen head once-came with a brush type generator, and replaced with a brushless-of which is what they come with now. Good Luck,TomC
Quote from: Oonrahnjay on July 30, 2016, 09:02:56 AM
A friend of mine in the construction business started his 4-halogen-light tower up in the storage lot of his shop a few days ago. I thought that the noise would rattle the fillings out of my teeth from 15' away. I moved to 50' away and started getting a headache after about 30 seconds -- and I almost never get headaches. Try it before you buy it.
Not all light towers are noisy the ones approved for Forest Service work are very quite,but they come at a price
Anything approved by the Forest Service will have spark arrestors that are something to clean out on a regular basis. If you don't, then you will lose power at some point, particularly if they have a wire mesh design.
I have run three 15K BTU rooftops on a 6,500 watt generator before, but the humidity was more an issue than heat. It was only 85 degrees at most that time and the bus was in the shade.
I have had issues at times running my three rooftops on my 8,000 watt diesel generator. In 107 degree heat I couldn't keep the A/C units running at all. The units would either trip the 20 amp breaker continually, or simply shut down because the condenser could not reject enough heat. The interesting thing is the generator was also powering a 10,000 BTU window unit that worked with no issues in the same heat. It had a 20 amp circuit so the breaker never tripped.
Quote from: Flight102C3 on July 30, 2016, 08:38:26 AM
That's kind of what I thought I might see if I can find an 8000 I'm looking at light towers. I know the power might not be good enough for computers. Any thoughts? Thanks
If you go to auctions that sell used rental equipment you will see a lot of light towers. I checked the United Rental light towers at the Vallejo, CA auction and they had Kubota 3 cylinder engines in light towers but were only putting out around 6.5Kw. I called my generator supplier and he said he could boost the power up on them but the injector pumps would have to be rebuilt to put out more horsepower to 8Kw generator head. Not worth messing with, considering the light towers worked and the contractors were buying them up at more than the engines were worth.
--Geoff
http://www.powertechgenerators.com/pages/cd8000si (http://www.powertechgenerators.com/pages/cd8000si)
What sort of price are the Powertech units that you linked to?
Ryan.
Quote from: MB LeMirage on July 31, 2016, 09:28:04 AM
What sort of price are the Powertech units that you linked to?
Ryan.
They don't list a price on the website. That's usually a bad sign ...
That's why i ventured to ask here, and not call them. At least this way when the are several holy bleepedy bleeps uttered out load, there isn't some poor sales rep on the other end of the line.
Ryan.
Quote from: MB LeMirage on July 31, 2016, 09:28:04 AM
What sort of price are the Powertech units that you linked to?
Ryan.
Just under 8K last year
A few summers ago it was 105 degrees F in Wisconsin. That summer we had only a single 13,500 BTU roof air. I kept it comfy inside running it 24/7 and hosing the outside fins down with water during the hottest part of the day. I just wedged the garden hose between the plastic grill opening in the shroud and let the water mist over the fins. Worked well enough to get us through. If you could come up with a mister like that, it might come in handy
Sent from my iPhone using Tapatalk
$8000 is a reasonable price. In 1999, I paid $10000 for a used, reconditioned 17KVA Isuzu powered generator that I needed at home to back up the hydro power plant. Remember the world was going to end on Y2K, and generators were very hot and desirable. It has been a very good unit. Too bad it is too big to fit in my bus...
JC
My power tech is over 12 years old. Never ever missed a beat. Powers two roof airs,with out any problems.
runs the microwave which is also over 12 years old. Acording to my manual it uses .4 gallons of diesel / hour.
But when everything is in a 64 year old coach why put anything new in her.
Scott might have to hook my misting system up so I can spray my air conditioners when not pulling hills with Huggy.
Pulled the hill up 321 from lenoir to Blowing rock through all the construction stopping and starting.
only used 2 gallons of water.never over 200 degrees.
uncle ned
Quote from: uncle ned on August 02, 2016, 08:20:01 AMMy power tech is over 12 years old. Never ever missed a beat. Powers two roof airs,with out any problems. runs the microwave which is also over 12 years old. Acording to my manual it uses .4 gallons of diesel / hour. ...
How many Kw from that Power Tech, Ned? Sounds like a great setup. How is the cooling set up on the gennie, external radiator or anything like that? Thanks. BH
Is either 8 or 10 I cannot remember which.
It is mounted in the old air conditioning bay of my 04 It has a home built quite box with a remote fan powered by electricity from the generator.
the exhaust is ran all the way to in front of the rear wheel and i can put a up stack on the end if needed.
I change the oil every few years whether it is needed or not.
only service ever.
uncle ned
Quote from: uncle ned on August 02, 2016, 05:02:31 PM
Is either 8 or 10 I cannot remember which.
It is mounted in the old air conditioning bay of my 04 It has a home built quite box with a remote fan powered by electricity from the generator.
the exhaust is ran all the way to in front of the rear wheel and i can put a up stack on the end if needed.
I change the oil every few years whether it is needed or not.
only service ever.
uncle ned
I like it. I work in Charlotte occasionally, Ned, we should get together sometime, darken some water and tell stories. Best wishes, BH
I try to come down to Gene Lewis's every year for his small rally at the Wade KOA on interstate 95.
uncle ned
Quote from: uncle ned on August 02, 2016, 05:19:59 PMI try to come down to Gene Lewis's every year for his small rally at the Wade KOA on interstate 95.
uncle ned
Yeah, that's near me but I'm often working weekends that time of year.
I have a Power tech 8000 that was in my bus when I bought it. It only had 250 hours on it. It is in it's own quiet box and can barley be heard when running. It will run both my roof airs, but if I want to use the microwave, I have to turn 1 of the ac units off.
My 4 cylinder Powertech 10kw just turned over to 1,400 hours. Change oil, change coolant once. Good Luck, TomC
Been out of town , read all !! Thanks back to a 7500wt QD Oman needs thoughts????