Freedom 458 Inverter / Charger
just installed 4 - 6 volt deep clycle batteries 2 days ago. however when I charge with my Generator the 30 amp fuse for the inverter and charger keeps popping. when charge with the engine they charge fine. any thoughts as to what is causing the fuse to blow after charging for a short time?
Battery charging overload
We need more information.
year, make, model of RV
make and model of battery charger (possibly an inverter/converter/charger)
30 amps 120 volts from generator is 3600 watts.
30 amps 12 volts battery charger is 360 watts
100 amps 12 volts battery charger is 1200 watts
200 amps 12 volts battery charger is 2400 watts
As you can see, it is unlikely a properly operating battery charger is capable of tripping a 30 amp 120 circuit breaker. There is probably some other issue that is tripping the breaker.
A shorted charger could trip a 30 amp breaker, but is not likely in your situation.
2001 Allegro Bus the Charger is a Freedom 458 series Combi Freedom Heart Interface. model #81-2022-12 serial # 313268 Date 07-01 I have owned it since new. the breaker is a 25amp pop out
Well, its not the charger section of the 458 as that will only pull about 11 amps max. That circuit also powers your microwave and your entertainment centre. Any chance you were microwaving something?
Once the batts have a good charge the upkeep current will be only two or three amps.
we have tried to turn all draws off and then charge and it still pops the breaker.
Freedom 458-20 81-2022-12 Manual
This model appears to have a 100 amp charger. Input AC power to the charger will decrease when pass through 120 volts AC becomes large. Total of the charger and the two 120 volt outputs will be limited to 30 amps.@ 120 volts.
There are three circuit breakers on this model. There is one 30 amp breaker on the “front” and a 15 and 20 amp on the back 130 volt output.
There may also be a 30 amp breaker in the RV main distribution panel. There may be more branch breakers on the sub panel distribution center (if one is installed in your unit).
Assuming the 30 amp breaker on the front of the inverter is the one that trips, there may be too much 120 volt AC out of the inverter/charger.
You said the breaker trips when using the generator. I expect it will also trip when using shore power.
See the manual linked above for testing instructions. Look in the installation portion of the manual.
Briefly, switch the two output circuit breakers "off" and try again.
If 30 amp breaker does not trip, then over load on the AC output is the issue.
If 30 amp breaker still trips, there is likely a fault in the inverter/charger.
There is a section on fault codes. See if you can narrow down the cause.
Set your Power Share function on the remote control panel to 20 or 10 if the input is 30A (generator). This will reduce the power used for charging to 20A.
Turn off your electric water heater, roof AC units, microwave, hairdryer, coffee pot etc to reduce the power demand from the inverter which is competing with the battery charging for power. These are all high power consumption devices.
NOTE: Freedom 25 only. Since the
Freedom 25 has dual AC inputs, one transfer
and one charge, factory default setting for
Power Sharing is OFF. If only one leg is used
to supply both inputs, set Power Sharing
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