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I like to ask, is the voltage from the solar panel messure with some load connected or is open circuit, normally solar panels produce high voltage than the working system, the reasson for that is to have Amperes in of to charge the batery, these is related to the size and power generated by the panel.
No need a resistor or in any case use a voltage regulator to prevent over charge.
dear see that :
1- the range of voltage which inverter work between it for example 180-260 v
2- most small generator voltage reach more than 260V so the inveter not work
3-check the frequency of genaratoer if it not fix the inverter will mot work
If a normal install, the shore power and generator will go through a transfer switch then to the inverter. If when inverting 120 VAC circuits are OK, then the problem must be before the inverter. I would suspect that it is the transfer switch.
Disconnect shore power, make sure generator in NOT running then take a look at the transfer switch these are in a boat or RV but either can lead to vibration problems which can lead to loosening wire connections which can lead to heating and burning. It may be something as simple as a wire coming loose. (Which could be dangerous!) Whether or not the contacts in the relays are OK, check and/or tighten all electrical connections. It's a good idea to check and tighten all electrical connections regularly.
Some transfer switches can be repaired by replacing just the relays. Other units (like mine this year!) will need to be replaced entirely.
I and welcome to FixYa. I am Kelly. If you have a single load at 1430 watts and possibly some other item using power figure your max working load at 2000W. I would recommend a 3000W inverter.
The problem your going to have with an inveter that size is a single battery is probably going to die an early death trying to keep up with it. Your prbably going to need to parallel a 2nd battery into your work vehicle.
This inverter is what I would recommend so that no matter what you did to it (6000W burst load) you are not getting it fixed or replacing it.
the solar panel is just to charge your inverter,if it is charging and
the inverter is on it will drain the current the solar panel is
supplying to the batteries,this makes it look like it is not charging
,so i advice you to switch off you inverter when charging it,get
another set of batteries connected to your solar panel then charge
both, let them be separated so that the new one is not in use so that
when solar is out you can switch to the other set of batteries