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05-10-2020, 08:57 AM
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#1
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Junior Member
Join Date: Aug 2019
Location: Lake arthur
Posts: 10
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30amp can it support 2 A/C’s
Can a 2nd AC be added to a 30 amp RV?
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05-10-2020, 10:16 AM
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#2
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Senior Member
Join Date: Mar 2017
Location: Sarasota
Posts: 742
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That rather depends on the AC units, and their current draw, but it seems unlikely.
A typical AC unit might draw 12 to 15 A, but what will blow the trips is the "inrush current" on startup, though you can get soft-start kits for many AC types.
Even with a soft start, you'll be pushing the limits at 30A, especially if you want to run anything else at the same time
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IanP, the man from Scotland
Julie, the Lady From Little Rock
Jay Feather 19XUD, pushing a Jeep Grand Cherokee
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05-10-2020, 12:15 PM
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#3
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Senior Member
Join Date: May 2012
Location: Minnesota
Posts: 9,784
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X2,
I have heard of people,wiring the 2nd ac back to a junction box under the tt, and use a separate heavy duty extension cord to plug in to the shore power post
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05-10-2020, 12:27 PM
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#4
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Senior Member
Join Date: Apr 2020
Location: Port Charlotte FL/Hinsdale MA.
Posts: 1,070
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Quote:
Originally Posted by Guid
Can a 2nd AC be added to a 30 amp RV?
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Yes but you could run absolutely nothing else.
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Retired Master Electrician and Building Inspector.
2011 Keystone Sprinter 323 BH
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05-12-2020, 04:36 PM
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#5
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Senior Member
Join Date: Aug 2019
Location: Avon
Posts: 569
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They don't put two a/c units in a 30 amp unit for a reason. You're better buying a couple if fans.
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Keith and Lisa Ward
2019 Pinnacle 36FBTS
2021 Ford F350 XLT CC LB DRW 6.7L Diesel
Demco 18K Autoslide Hitch and Timbrens
2019 Ford F350 SB 6.7L Diesel (Gone)
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05-12-2020, 05:24 PM
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#6
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Senior Member
Join Date: Apr 2017
Location: Inland Empire, California
Posts: 2,006
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My 2017 Greyhawk with 30 amp service came standard with 2 11000 btu air conditioners. When both are running the power management display shows about 22 amps. No problem running both.
So, if the units are 11000 or so and energy efficient, you should be able to run both at the same time with some power to spare. Don't try turning on an electric water heater or microwave at the same time though.
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Jim
Retired electronic technician (45 years in the field)
2017 Greyhawk 29W (solar & many other mods)
wife (maybe I should have given her top billing)
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05-13-2020, 04:40 AM
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#7
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Junior Member
Join Date: Aug 2019
Location: Lake arthur
Posts: 10
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Thanks
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05-13-2020, 08:23 AM
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#8
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Senior Member
Join Date: Nov 2016
Location: San Antonio
Posts: 2,952
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You can also alternate which one is running. While you can't have both starting at the same time, it would be possible to have one running in the living area, then turn it off and start the one in the bedroom area.
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2017 JayFlight 21QB
2021 Ford F150 SCrew 3.5 Eco, 157”, 3.55, Tow Pkg
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05-14-2020, 10:45 AM
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#9
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Senior Member
Join Date: Jun 2019
Location: Woodland Park
Posts: 218
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We currently have a Greyhawk 30X (well not really, about to drive it back to the RV dealership to pick up our new coach), and it's a 30A with 2 A/Cs. What we found was the 30A will run both A/Cs without issue. However, the water heater MUST be on propane and running the microwave can be dodgy without cutting out one of the A/Cs. Same goes with any other high current draw appliances like coffee makers, air fryers, etc...
Jeff
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Owner of a 2023 Jayco Eagle 355MBQS - Purchased June 12th 2023
Owned a 2020 Jayco Seneca 37K - Purchased May 9th 2020
Owned 2019 Jayco Greyhawk 30X - Purchased May 31st 2019.
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05-14-2020, 10:54 AM
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#10
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,859
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Most MH's with 30a and 2 A/Cs have a system that prevents both from starting at the same time.
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Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search
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05-14-2020, 11:12 AM
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#11
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Senior Member
Join Date: Jun 2019
Location: Woodland Park
Posts: 218
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Quote:
Originally Posted by norty1
Most MH's with 30a and 2 A/Cs have a system that prevents both from starting at the same time.
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I can say on our Greyhawk nothing "prevents" them from running at the same time however, there is a load management system that will cut them out if other high amp demands come in to keep the system as a whole from exceeding 30A. This is why we keep our hot water heater on propane if we feel like we're going to need both A/Cs consistently.
Jeff
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Owner of a 2023 Jayco Eagle 355MBQS - Purchased June 12th 2023
Owned a 2020 Jayco Seneca 37K - Purchased May 9th 2020
Owned 2019 Jayco Greyhawk 30X - Purchased May 31st 2019.
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