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07-25-2021, 10:00 PM
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#1
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 25.6
State: New Mexico
Posts: 5,117
THOR #20220
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30amp campsite AC on microwave goes out?
30 amp coach, plugged into 30 amp..AC stays on and Microwave goes out? After 5 minutes Microwave comes back on?
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07-25-2021, 10:28 PM
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#2
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Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,767
THOR #1469
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Quote:
Originally Posted by Scubawise
30 amp coach, plugged into 30 amp..AC stays on and Microwave goes out? After 5 minutes Microwave comes back on?
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Probably weak electrical circuit at the campground. It will happen again so you need to learn how to manage loads.
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07-25-2021, 11:36 PM
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#3
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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Do you have a way to measure your draw at the pedestal?
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07-26-2021, 12:00 AM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 25.6
State: New Mexico
Posts: 5,117
THOR #20220
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Thx. I can measure but all is ok
__________________
LAS CRUCES 2020 Thor Vegas 25.6
Lora & George. Golden Retriever & Multi-Gen Australian labradoodle & new ALD in March. Happy Campers!! E Biking, Hiking, Tennis, Scuba,Fishing,Cross Country Skiing, Snowshoeing. Retired H.S. Principal, Sr. IT Engineer, Life & Health Insurance Agent
"Today is a Gift and Why it is called the Present"
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07-26-2021, 01:05 AM
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#5
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Senior Member
Brand: Redwood
Model: 36FB
State: Arizona
Posts: 1,766
THOR #3610
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Hopefully you have an EMS connected to the incoming power source if you're having this kind of power fluctuations to protect the A/C, microwave & all the other electronics onboard.
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Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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07-26-2021, 01:07 AM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 25.6
State: New Mexico
Posts: 5,117
THOR #20220
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Yes surge protector
__________________
LAS CRUCES 2020 Thor Vegas 25.6
Lora & George. Golden Retriever & Multi-Gen Australian labradoodle & new ALD in March. Happy Campers!! E Biking, Hiking, Tennis, Scuba,Fishing,Cross Country Skiing, Snowshoeing. Retired H.S. Principal, Sr. IT Engineer, Life & Health Insurance Agent
"Today is a Gift and Why it is called the Present"
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07-26-2021, 01:29 AM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: 2011 FW Hurricane 33T
State: England
Posts: 1,295
THOR #16471
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Quote:
Originally Posted by Scubawise
30 amp coach, plugged into 30 amp..AC stays on and Microwave goes out? After 5 minutes Microwave comes back on?
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Just to clarify in my head, only the microwave shuts down? The remainder of the AC in the MH stays on? You are asking, like a question, how should we know?
"Just the facts ma'am."
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07-26-2021, 02:30 AM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 29M
State: Texas
Posts: 2,712
THOR #11781
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Is the microwave plug fully inserted?
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Lt Keefer
2018 Hurricane 29M
CHF, Saf-T-Plus, SumoSprings
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07-26-2021, 10:33 AM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Quantum JM31
State: Tennessee
Posts: 701
THOR #21926
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Quote:
Originally Posted by Scubawise
30 amp coach, plugged into 30 amp..AC stays on and Microwave goes out? After 5 minutes Microwave comes back on?
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Do you have an energy management system that sheds loads when the current nears 30 amps. Sounds like when the compressor is running on the air conditioner and the microwave at the same time you might be exceeding 30 amps. When the compressor shuts off there is enough margin left to run the microwave so it starts back up. If you do have an EMS it all depends on how the priority is set. If the air conditioner has a higher priority than the microwave then the microwave gets shed first.
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Bob
2022 Quantum JM31
2023 Colorado Z71
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07-26-2021, 11:58 AM
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#10
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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Quote:
Originally Posted by Scubawise
Yes surge protector
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Just to be clear: Surge Protector... or EMS? 
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-26-2021, 03:14 PM
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#11
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 25.6
State: New Mexico
Posts: 5,117
THOR #20220
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Just microwave. Family member only 1 AC runs on 30 amp. Tested ..it is at 105 volts
__________________
LAS CRUCES 2020 Thor Vegas 25.6
Lora & George. Golden Retriever & Multi-Gen Australian labradoodle & new ALD in March. Happy Campers!! E Biking, Hiking, Tennis, Scuba,Fishing,Cross Country Skiing, Snowshoeing. Retired H.S. Principal, Sr. IT Engineer, Life & Health Insurance Agent
"Today is a Gift and Why it is called the Present"
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07-26-2021, 03:43 PM
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#12
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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105 is a bit on the low side...
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-26-2021, 05:02 PM
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#13
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Senior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 2,326
THOR #6903
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Quote:
Originally Posted by Bob Denman
105 is a bit on the low side...
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Absolutely low
Below 110v you will pull a lot more amps, heat things up and shorten life of every appliance involved
I really don't like being below 115v for extended periods
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07-26-2021, 06:32 PM
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#14
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I Think We're Lost!
Brand: Still Looking
Model: Tiffin Wayfarer 24 BW
State: New York
Posts: 22,195
THOR #8860
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That alone could be the source of this issue...
__________________
"What: me worry?"
Good Sam Member 843599689
Current coach: Tiffin Wayfarer 24 BW
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07-26-2021, 06:59 PM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: Fourwinds 24F
State: North Carolina
Posts: 775
THOR #9511
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As mentioned above the AC line voltage is too low and you run the risk of damaging equipment and/or your distribution center. Feel the 30amp AC breaker in the distribution center and if it is more than warm to the touch you are drawing excess amps. Try running AC on low vs high.
If I ran into this situation I would hook up my 50 to 30 amp dogbone and see if I got better power. Could be one leg of the power to the pedestal being low. I would cross my fingers that the other leg was good and the dogbone connected to that leg. Never know without trying. Just me…I like to tinker. Damn engineers.
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07-26-2021, 07:04 PM
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#16
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Senior Member
Brand: Thor Motor Coach
Model: Freedom Traveller A27
State: North Carolina
Posts: 2,438
THOR #17765
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I’d ask the campground to either fix it or move me. I also like the 50 to 30 dog bone idea.
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07-31-2021, 11:52 PM
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#17
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Senior Member
Brand: Thor Motor Coach
Model: Vegas 25.6
State: New Mexico
Posts: 5,117
THOR #20220
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Thx all many sites 103 to 110..we just left there
__________________
LAS CRUCES 2020 Thor Vegas 25.6
Lora & George. Golden Retriever & Multi-Gen Australian labradoodle & new ALD in March. Happy Campers!! E Biking, Hiking, Tennis, Scuba,Fishing,Cross Country Skiing, Snowshoeing. Retired H.S. Principal, Sr. IT Engineer, Life & Health Insurance Agent
"Today is a Gift and Why it is called the Present"
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08-01-2021, 12:02 AM
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#18
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Senior Member
Brand: Thor Motor Coach
Model: 2011 FW Hurricane 33T
State: England
Posts: 1,295
THOR #16471
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At a loss for words...
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08-01-2021, 03:35 AM
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#19
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Member
Brand: Thor Motor Coach
Model: A.C.E 29.3
State: Minnesota
Posts: 92
THOR #4198
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The microwave is maybe a little more sensitive to the low voltage at that site. 103 VAC is pretty low. It may be better at the next stop. GL!
__________________
John - Vadnais Heights, MN
Thor ACE 29.3 (No outside kitchen) 2017
ARS - KØTG
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08-01-2021, 10:28 AM
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#20
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Senior Member
Brand: Thor Motor Coach
State: Missouri
Posts: 2,326
THOR #6903
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Operating anything in your RV at lower than 110 is very risky and definitely will damage equipment long term
Short term you will push your luck with hot insulation and from experience melted a few plugs
Using the dogbone and one leg is absolutely the thing to try
If voltage is low then hopefully you are able to move on
Going to be interesting if we don't get with upgrading the grid and more camp grounds
The trend where we have been is upgrading electtrical service to include a meter and a daily maximum
That seems to be fairly common in leading edge camp grounds
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