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03-31-2019, 01:42 PM
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#1
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Senior Member
Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 668
THOR #13869
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Question about the main circuit breaker, 120vac.
During my troubleshooting on my converter will my multi meter, (of which turned out to be bad);
I discovered that in the 120vac buss, with all the breakers off, there was no power there, while plugged into shore power, until the main breaker switched on.
Checking more, the 120vac was present on the wire side of the breaker, even with breaker kicked to off position, to me, this was the exit side of the breaker.
You know they look similar, if not the same, as you find in a household panel.
So I wonder, does the breaker still work the same, with the direction of electric flow (current), going in either direction?
Not totally sure, as why I ask, even though the answer seems evident.
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Rusty
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03-31-2019, 01:52 PM
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#2
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Senior Member
Brand: Still Looking
Model: S.O.B.
State: Florida
Posts: 684
THOR #14543
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When the breaker is turned OFF, you will still show 120V on one side of the breaker, where the feed from the shore power is coming to the breaker. The other side of the breaker should show 0 volts.
When the breaker is ON, you should show 120V on both sides of the breaker.
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Ed
Some Other Brand w/2020 Jeep Gladiator Toad
Living The Dream in "God's Waiting Room"
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03-31-2019, 02:01 PM
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#3
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Junior Member
Brand: Thor Motor Coach
State: Louisiana
Posts: 1
THOR #14876
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2018 Hurricane, all 9 Dr. side neon running lights out. Pass side are on. Dealer can’t check until 27 April. Any ideas??
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03-31-2019, 03:03 PM
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#4
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Senior Member
Brand: Still Looking
Model: S.O.B.
State: Florida
Posts: 684
THOR #14543
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Quote:
Originally Posted by MikeD
2018 Hurricane, all 9 Dr. side neon running lights out. Pass side are on. Dealer can’t check until 27 April. Any ideas??
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Hi, Mike. Welcome aboard!
This particular thread where you've posted is about a different problem. You're more likely to get some help with your issue if you start a new thread. Click on "Motorhome Tech Topics" on the forum main page, then click the "New Thread" button. The system will walk you through it from there.
Good luck with your light problem.
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Ed
Some Other Brand w/2020 Jeep Gladiator Toad
Living The Dream in "God's Waiting Room"
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03-31-2019, 03:21 PM
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#5
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,360
THOR #7035
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Quote:
Originally Posted by 10scDust
During my troubleshooting on my converter will my multi meter, (of which turned out to be bad);
I discovered that in the 120vac buss, with all the breakers off, there was no power there, while plugged into shore power, until the main breaker switched on.
Checking more, the 120vac was present on the wire side of the breaker, even with breaker kicked to off position, to me, this was the exit side of the breaker.
You know they look similar, if not the same, as you find in a household panel.
So I wonder, does the breaker still work the same, with the direction of electric flow (current), going in either direction?
Not totally sure, as why I ask, even though the answer seems evident.
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This is normal. The MAIN breaker feeds the breaker box buss so it is hot on the wire side but cold on the buss side when off. This is the opposite of distribution breakers which clip onto a hot buss but have the wire side cold when off.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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03-31-2019, 03:28 PM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 4,180
THOR #6411
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Quote:
Originally Posted by 10scDust
During my troubleshooting on my converter will my multi meter, (of which turned out to be bad);
I discovered that in the 120vac buss, with all the breakers off, there was no power there, while plugged into shore power, until the main breaker switched on.
Checking more, the 120vac was present on the wire side of the breaker, even with breaker kicked to off position, to me, this was the exit side of the breaker.
You know they look similar, if not the same, as you find in a household panel.
So I wonder, does the breaker still work the same, with the direction of electric flow (current), going in either direction?
Not totally sure, as why I ask, even though the answer seems evident.
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The main breaker (30 amp) wire at the bottom is where shore power is routed to the power center bus. The wire to the 30 amp breaker will be live when on shore power or generator power, as this circuit breaker powers the power center bus. All other circuit breakers work the opposite way, as they take power from the bus and supplies current to the wire attach to them. If you have a 50 amp power center, it works the same way except you have a twin 50 amp circuit breaker instead of a 30 amp that divides the incoming power into twin power buses.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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03-31-2019, 06:29 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 668
THOR #13869
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Thanks for all the replies.
I kind of figured it was okay, just never seen it this way, and thought well maybe I'd ask.
__________________
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Rusty
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