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12-21-2019, 11:29 AM
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#1
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Seasoned Camper
Join Date: Aug 2019
Location: Apache junction
Posts: 67
M.O.C. #24657
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40 amp breaker
Do I need to switch out my 40 amp breaker to a 80 amp if I always run my Jack's and slides when I'm plugged into 50 amp service. Thanks, Bill
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12-21-2019, 11:59 AM
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#2
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,690
M.O.C. #4831
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The 40 amp breaker will start failing regardless of the power source. It is just a matter of time, uses, and sometimes temperature.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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12-21-2019, 01:11 PM
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#3
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Montana Master
Join Date: Dec 2017
Location: Mountain Home
Posts: 864
M.O.C. #20949
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Also less overall wear and tear on the DC system by upgrading to the 80 amp breaker for the hydraulic pump motor circuit
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12-21-2019, 02:28 PM
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#4
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,361
M.O.C. #6433
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If you have a 40 and working well then upgrading to a 50 may work fine. But you might as well go with an 80. They don’t just suddenly fail and leave you stranded. They just start momentarily tripping and resetting. So it is more the potential nuisance than something critical.
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Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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12-21-2019, 03:46 PM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Cold weather is the main source of the problem. The hydraulic fluid gets thicker, the pump works harder pulls more juice causing the breaker to pop.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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12-21-2019, 05:24 PM
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#6
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,774
M.O.C. #12947
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If you have a 40 or 50 amp breaker and it starts getting weak, you will start developing higher resistance in the breaker which will drop the voltage to the pump motor and that will stress the motor when it’s under load. The sooner you upgrade the better it will be for the motor.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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12-22-2019, 07:58 AM
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#7
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Montana Master
Join Date: Aug 2015
Location: SWFL
Posts: 965
M.O.C. #17801
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I'd recommend upgrading the breaker regardless.
__________________
2016 Montana 3711FL
2005 Ford F350, 6.0 diesel, short bed
Demco Hitchiker Auto Slide hitch
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12-22-2019, 10:24 AM
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#8
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Montana Fan
Join Date: May 2015
Location: Livermore
Posts: 492
M.O.C. #17391
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I wonder if a breaker with a 80 amp trip is wise when they use a 40 in it's place. Maybe go to a 50. 80 may be to much. Maybe the wiring isn't capable of drawing more than 50 amps.
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12-22-2019, 11:12 AM
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#9
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Montana Master
Join Date: Aug 2015
Location: SWFL
Posts: 965
M.O.C. #17801
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80a is not too much. It was recommended in the Lippert bulletin, and I've not heard even one complaint or warning that the circuit burned up.
__________________
2016 Montana 3711FL
2005 Ford F350, 6.0 diesel, short bed
Demco Hitchiker Auto Slide hitch
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12-22-2019, 11:45 AM
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#10
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Montana Master
Join Date: Dec 2017
Location: Mountain Home
Posts: 864
M.O.C. #20949
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The existing factory DC cable from breaker to dual polarity solenoid is more than adequate to handle 80 amp draw. The factory continues to use their surplus stockpile of lower rated cheap resettable breakers instead of installing a properly sized quality resettable breaker that Lippert... makers of the hyd system recommend at the get go...
I’m using AW32 fluid in my hyd system...have from day one... I’ve never tripped my 80 amp breaker and the slides operate slower at temps of 0 degrees but do operate without stalling.
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12-29-2019, 03:10 PM
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#11
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Seasoned Camper
Join Date: Apr 2019
Location: Middleton
Posts: 76
M.O.C. #23951
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80 amp breaker
From the posts, I do want to make the switch. Does anyone have a picture of it or a good description?
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12-29-2019, 03:22 PM
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#12
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,690
M.O.C. #4831
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__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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12-29-2019, 03:25 PM
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#13
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Seasoned Camper
Join Date: Apr 2019
Location: Middleton
Posts: 76
M.O.C. #23951
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Thanks as always.
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