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05-29-2015, 01:28 PM
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#1
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Senior Member
Join Date: May 2015
Location: In our coach
Posts: 232
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Sequence of events
So I'm plugged into 110 shore, since it's getting warm in SoCal, I wanted to run AC's for awhile and it gives me a chance to exercise my generator. My question is, do I have to always shut off the fridge, unplug the shore power and then start the generator and then turn the fridge back on?
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Ben & Michelle
2015 Berkshire 38A
2005 Jeep Wrangler toad
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05-29-2015, 01:35 PM
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#2
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Senior Member
Join Date: Dec 2012
Posts: 7,652
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No.
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05-29-2015, 01:43 PM
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#3
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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True "no"
But who told you that you should?
TURBS
08 duramax tuned n modded
2011 32bhok Sabre
2015 camping "9 nights"
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05-29-2015, 01:50 PM
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#4
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Senior Member
Join Date: Dec 2012
Posts: 1,255
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If you are unplugging THEN starting your genset you don't need to do anything. It's only when you stay plugged in AND start up your genset that you want to shut off any heavy loads.
It minimizes the chance of arcing in your transfer switch when it flips over from shore to genset... or vica versa. If you're only applying power one at a time it's a moot point.
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05-29-2015, 02:06 PM
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#5
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Senior Member
Join Date: May 2015
Location: In our coach
Posts: 232
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Quote:
Originally Posted by Yarome
If you are unplugging THEN starting your genset you don't need to do anything. It's only when you stay plugged in AND start up your genset that you want to shut off any heavy loads.
It minimizes the chance of arcing in your transfer switch when it flips over from shore to genset... or vica versa. If you're only applying power one at a time it's a moot point.
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I am not unplugging the shore and the only thing on is fridge, is that considered a heavy load?
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Ben & Michelle
2015 Berkshire 38A
2005 Jeep Wrangler toad
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05-29-2015, 02:11 PM
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#6
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Senior Member
Join Date: Feb 2014
Location: Dallas TX
Posts: 1,675
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Quote:
Originally Posted by tnbendr
I am not unplugging the shore and the only thing on is fridge, is that considered a heavy load?
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Not to me. I consider the fridge a low power draw item.
I just turn off the Air Conditioners, then start up the generator with the shore power plugged in.
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Dan
2014 Berkshire 390RB-60
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05-29-2015, 02:15 PM
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#7
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Fridge draws under 5 amps.
A/c, microwave and water heater on electric would be high draws amps
TURBS
08 duramax tuned n modded
2011 32bhok Sabre
2015 camping "9 nights"
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05-29-2015, 02:21 PM
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#8
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Senior Member
Join Date: Dec 2012
Posts: 1,255
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Quote:
Originally Posted by tnbendr
I am not unplugging the shore and the only thing on is fridge, is that considered a heavy load?
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Oops.. sorry. Thought you were unplugging, but it was part of the question. My bad.
What Dan and Turbs said... but also consider cumulative loads when switching electrical sources.
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05-29-2015, 03:25 PM
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#9
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Berkshire 390QS
Join Date: Feb 2011
Location: Colorado
Posts: 1,489
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We always unplug from shore power when starting generator, easyier on the ATS and make sure ACs are off.
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2011: 54 days, 2012: 218 days, 2013: 175 days, 2014: 196 days
2015: 188 days, 2016: 72 days, 2017: 185 days: 2018 182 days
2019: 156 days (2009 Berkshire, 390QS, and toad)
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05-29-2015, 03:44 PM
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#10
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Senior Member
Join Date: May 2015
Location: In our coach
Posts: 232
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Thanks all! Just trying to get familiar with all the nuances...this forum and you guys have been a great help so far and one day I'll be able to advise a newbie!
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Ben & Michelle
2015 Berkshire 38A
2005 Jeep Wrangler toad
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05-29-2015, 05:08 PM
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#11
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Senior Member
Join Date: Mar 2013
Location: Cut Off, La.
Posts: 1,830
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It's also a good idea to let the generator run for a few minutes before putting a load on it. This allows any dampness to dry up before the load is applied. And also allows the gen to warm up.
This step isn't written in any book or manual. I live in the south in very humid conditions and it's the way I've been taught when bringing any genset online.
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2013 Berkshire 390BH
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05-29-2015, 05:31 PM
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#12
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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Quote:
Originally Posted by Campin Cajun
It's also a good idea to let the generator run for a few minutes before putting a load on it. This allows any dampness to dry up before the load is applied. And also allows the gen to warm up.
This step isn't written in any book or manual. I live in the south in very humid conditions and it's the way I've been taught when bringing any genset online.
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Great advice. I've had mine stall out by putting a load in it before it's warmed up. It restarts with a big puff of black smoke. It can't be good for it. I learned to wait.
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05-29-2015, 05:42 PM
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#13
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Senior Member
Join Date: May 2015
Location: In our coach
Posts: 232
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Quote:
Originally Posted by Campin Cajun
It's also a good idea to let the generator run for a few minutes before putting a load on it. This allows any dampness to dry up before the load is applied. And also allows the gen to warm up.
This step isn't written in any book or manual. I live in the south in very humid conditions and it's the way I've been taught when bringing any genset online.
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I did consciously wait (either common sense or dumb luck) before turning the AC's on.
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Ben & Michelle
2015 Berkshire 38A
2005 Jeep Wrangler toad
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05-30-2015, 07:42 AM
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#14
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Senior Member
Join Date: Jun 2013
Location: Mount Laurel, NJ
Posts: 1,024
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tnbendr If your shore line has enough amperage to run your AC's, then why start the generator. If your shoreline is insufficient, then it makes sense to start the generator. But once the generator is running, everything will be on the generator. The shoreline will be not used. X2 to the suggestions of shedding the load when the generator is started.
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Gale & Hank- 2012 Berkshire 390BH
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05-30-2015, 11:55 AM
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#15
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Senior Member
Join Date: Feb 2014
Location: Dallas TX
Posts: 1,675
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I believe he said because he wants to exercise his generator while parked.
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Dan
2014 Berkshire 390RB-60
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05-30-2015, 12:37 PM
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#16
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Senior Member
Join Date: Jun 2011
Location: On Another Adventure
Posts: 2,563
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I always turn off AC then UNPLUG, start gen and wait for the " beep " then fire up AC 's.... Rather be safe than sorry ... Have had multiple techs tell me that's the safest way....
Sent from my iPhone using Forest River Forums
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05-30-2015, 01:00 PM
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#17
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Senior Member
Join Date: Feb 2014
Location: Dallas TX
Posts: 1,675
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Actually sometimes on hot days when I'm leaving a campground, I will start the generator with the air conditioner on. Everything keeps right on working when I unplug the power cord and I pull out of the campground with a cool coach. I know some of you are going to say its bad, but I do it anyway at my own risk.
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Dan
2014 Berkshire 390RB-60
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05-30-2015, 03:02 PM
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#18
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Senior Member
Join Date: Apr 2012
Location: West Michigan/Fort Myers
Posts: 3,927
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Dan I do the same thing. I never knew it was a bad thing to do. I know not to hit either side with a load but it never occurred to me that this would harm the transfer switch.
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05-30-2015, 03:27 PM
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#19
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Senior Member
Join Date: May 2015
Location: In our coach
Posts: 232
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Quote:
Originally Posted by I-RV
tnbendr If your shore line has enough amperage to run your AC's, then why start the generator. If your shoreline is insufficient, then it makes sense to start the generator. But once the generator is running, everything will be on the generator. The shoreline will be not used. X2 to the suggestions of shedding the load when the generator is started.
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I am only plugged into a 15 amp 110 circuit, so I don't even want to try the AC. I wanted to run the AC and exercise the gen, especially now that I've learned it "needs" to run. It was a little dirty on the exhaust for awhile at first but I ran it for about 2 1/2 hrs...it's clean now!
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Ben & Michelle
2015 Berkshire 38A
2005 Jeep Wrangler toad
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05-30-2015, 07:16 PM
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#20
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Senior Member
Join Date: Mar 2015
Location: Mishawaka
Posts: 576
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The transfer switch is designed to disconnect the shore power and connect to generator power without causing harm. There is a break in power seconds in duration that no power is sent to anything in the coach. Otherwise the coach would attempt to sync with the local utility company and that would not go well. The a/c compressor will turn off during the transfer and by design will not restart for 5 minutes max. This prevents power surges to the a/c units and generator.
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Wayne
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