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Old 10-11-2019, 04:06 PM   #36
Beau388
Senior Member
 
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 4,157
THOR #6411
Let me see if I can help. The Use/Store switch controls the latching relay which is located in the left front corner of the under-bed electrical compartment. It is beside the Rapid Camp circuit board. There is in an 8 gauge cable that runs from the battery compartment (through the 50 amp circuit breaker) to the relay. The relay is also wired to the 12 volts section of the power center under the bed. The purpose of the latching relay is to remove the connection of the house batteries from the power center and the power center's 12 volt converter. This is a 12 volt direct current circuit.



The automatic transfer switch (ATS) is located under the bed. It is the 120 volt device between the shore line inlet and the power center Its normal mode is to supply 120 volt power to the power center. Its primary purpose is to prevent (isolate) the shore lower cable from becoming live when the generator is supplying 120 volt power to the power center.


The inverter bypass relay's (integral to most RV inverters) purpose is to supply 120 volt power from the power center to selected RV 120 volt circuits bypassing all functions of the inverter. When no 120 volt power is available from the power center, the bypass relay will open and allow the inverter to invert 12 volt DC power into 120 volt AC power and supply power to the selected circuits (assuming the inverter is on). The inverter is also located under the bed and is the largest electrical object under the bed.


Latching relay if upper right. Below is the ATS. Silver box to the right is converter and power center. Foreground, center is EMS. Far left in the inverter. Yes, my wiring is messy - a project of the winter
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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