chef007
katy texas
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Joined: 10/16/2006
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I HAVE A 7.0 ONAN DISEL GENERATOR, AND WHEN I TURN IT ON AND TURN ON BOTH AIR CONDITIONERS IT WILL RUN FOR 4 OR 5 MINUTES, THEN IT WILL TRIP THE GENERATOR BREAKER ON THE GENERATOR. IT IS A NEW UNIT, LESS THAN 100 HOURS ON IT. IT IS ON A 2008 TOURMASTER T-40
THANKS FOR YOUR HELP
THE ROAD CHEF.
"LIFE IS TO SHORT TO EAT BAD FOOD AND DRINK BAD WINE"
THE ROAD CHEF
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randrx2
Newport News, VA
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Joined: 03/26/2005
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How many amps are the units pulling? Put a clamp-on ammeter on the wires going to the breaker and see the amount.
"Breath in, breath out, move on."
2008 Winnebago Voyage 32H "Seven"
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Bobbo
Memphis, TN
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If it is a 240v system, are the two AC units on opposite legs?
Bobbo, Linda and the furry kid (German Shepherd)
'07 Winnebago Outlook 31C on a Ford E450 Super Duty Chassis
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Near N35 12 17 W89 50 57
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enblethen
Moses Lake, WA USA
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Joined: 01/05/2005
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I would suggest checking the generator circuit to the transfer switch for a loose connection. Check both the phase conductors and the neutral(s).
Bud
Suzuki XL7 pushing Pace Arrow
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gunny357
North Carolina
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Joined: 04/06/2005
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First. Post the whole model/spec/serial number so we see what you see.
Measure the amp draw and post it here. You may be drawing current in excess of the breakers rating which means you may have an electricla problem as this was designed to work. Else you may have a weak breaker.
WHY ARE YOU YELLING? Typing in all caps is considered yelling.
Consider taking it back for a warranty repair if less than 1 year old.
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chef007
katy texas
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gunny357 wrote:First. Post the whole model/spec/serial number so we see what you see.
Measure the amp draw and post it here. You may be drawing current in excess of the breakers rating which means you may have an electricla problem as this was designed to work. Else you may have a weak breaker.
WHY ARE YOU YELLING? Typing in all caps is considered yelling.
Consider taking it back for a warranty repair if less than 1 year old. THANKS FOR THE INFO.... I AM NOT YELLING, IT IS EASYER FOR ME TO SEE WHAT I AM TYPING WHEN I USE ALL CAPS. (HALF BLIND)I NEVER HEARD OF SUCH A THING...YELLING ON A COMPUTOR, MUST BE SOME CORPORATE B.S.
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randrx2
Newport News, VA
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chef007 wrote:gunny357 wrote:First. Post the whole model/spec/serial number so we see what you see.
Measure the amp draw and post it here. You may be drawing current in excess of the breakers rating which means you may have an electricla problem as this was designed to work. Else you may have a weak breaker.
WHY ARE YOU YELLING? Typing in all caps is considered yelling.
Consider taking it back for a warranty repair if less than 1 year old. THANKS FOR THE INFO.... I AM NOT YELLING, IT IS EASYER FOR ME TO SEE WHAT I AM TYPING WHEN I USE ALL CAPS. (HALF BLIND)I NEVER HEARD OF SUCH A THING...YELLING ON A COMPUTOR, MUST BE SOME CORPORATE B.S.
It is kind of a net etiquite thing not to use all caps. If you are using IE, look at the bottom right corner of your screen. You should see a magnifying glass. You can change the zoom of the screen to make the pictures bigger. Also, you can change the font size on the screen by holding the CTRL key and moving your scroll wheel or use the menu toolbar and go to Page, Text Size, and select a bigger text. Hope that helps.
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wwest
Redmond WA
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Joined: 03/17/2005
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chef007 wrote:I HAVE A 7.0 ONAN DISEL GENERATOR, AND WHEN I TURN IT ON AND TURN ON BOTH AIR CONDITIONERS IT WILL RUN FOR 4 OR 5 MINUTES, THEN IT WILL TRIP THE GENERATOR BREAKER ON THE GENERATOR. IT IS A NEW UNIT, LESS THAN 100 HOURS ON IT. IT IS ON A 2008 TOURMASTER T-40
THANKS FOR YOUR HELP
THE ROAD CHEF.
Should both A/C compressors happen to try to restart (head pressure already "up") simultaneously a 7KW genset might not be able to support the resulting current surge. Especially so if the genset happens to be running in "economy" mode at the time. Even more especially if the genset happens to be of the newer "inverter" type.
Even a standard generator already running at the fixed RPM for line frequency might not be able to "throttle up" quickly enough to support both restarts simultaneously.
It is not at all unusual for an A/C compressor restart to require more than 2.5 times the running current as an instantaneous surge.
If nothing else works then add a TDR, time delay relay, to each A/C to delay the compressor circuit closure and keep a ~3000 watt resistance heater "on line" for a couple of seconds each time the compressor restart circuit closes.
The resistance heater will not be sensitive to the genset "throttle up" period/delay and once TDR delay is exhausted the genset will be throttled up enough to take on the compressor(s) restart surge load.
* This post was
edited 08/15/08 11:16am by wwest *
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