just starting a solar install on a new camping trailer.

[driesterer]

I am looking for suggestions on integrating the existing camper wiring (12VDC with 120VAC shore power) I have 2 - 6 volt lead acid batteries and a
GIANDEL 2200W Pure Sine Wave Power Inverter. 2 - 100 amp solar panels. Can I parallel the batteries to the inverter and the camper battery charger? I am missing something.
Thanks

 

[John Frum]

What is the system voltage of the camper?
Was the exisiting system factory installed by the camper manufacturer?

 

[driesterer]

Camper has 120 Volt AC shore Power with a 12 volt battery charger. when plugged in it charges the battery and I am able to use the A/C, Microwave and TV. Everything else is on the 12 Volt DC side. When not plugged into shore power, I only have the battery to power lights and the water pump and radio.

 

[John Frum]

I am looking for suggestions on integrating the existing camper wiring (12VDC with 120VAC shore power) I have 2 - 6 volt lead acid batteries and a
GIANDEL 2200W Pure Sine Wave Power Inverter. 2 - 100 amp solar panels. Can I parallel the batteries to the inverter and the camper battery charger? I am missing something.
Thanks

2200 ac watts / .85 conversion factor / 12 volts = 215.68627451 dc amps
215.68627451 dc amps * 1.25 fuse factor = 269.607843137 fuse amps.
Yes you can parallel the charger and the inverter to the battery.
The inverter needs 0 awg cable assuming its <10 feet round trip and a 275 amp fuse.
Can your battery handle an additional 215 amps draw?

Actually I'm not sure we have the same understanding of parallel.

 

[driesterer]

I drew a basic plan.

 

[John Frum]

I drew a basic plan.

Sorry my vision is not up to the task.

 

[John Frum]

I drew a basic plan.

Here is a good tool for diagrams https://app.diagrams.net/

 

[driesterer]

 

[John Frum]

Looks like the camper has a typical WFCO style ac/dc panel and converter, confirm?

 

[driesterer]

Yes. Typical WFCO. And by parallel I meant both the Giandal charger and the WFCO chargers are both going to the same battery.

 

[John Frum]

Yes. Typical WFCO. And by parallel I meant both the Giandal charger and the WFCO chargers are both going to the same battery.

potential power loop

Let me think about this

 

[John Frum]

this is what we don't want
inverter->converter->dc_panel->battery->inverter

 

[John Frum]

disregard the last drawing its late and I'm tired

 

[John Frum]

Will think about it and post tomorrow.
Anyone else feel free to jump in.

 

[John Frum]

got it... I think.

                                       |->breaker->converter->dc_panel
shore_power->surge_protector->breaker->|
                                       |->
                                          |->manual_transfer_switch->master_breaker
inverter--------------------------------->

 

[John Frum]

The big consideration is the neutral/ground bond.
When on shore power neutral and ground should only be bonded somewhere between the pedestal and the poco transformer.
When you are on inverter power the neutral and ground should be bonded within the inverter.
This is for the safety!

 

[driesterer]

That is what I have it think.

 

[John Frum]

So you added an ats and a surge protector?

 

[driesterer]

I have a manual transfer switch. I do not have any problems with the AC side. its the DC side that is the issue. I see now that I need to eliminate the batteries getting charged from 2 separate chargers at the same time.

 

[John Frum]

I have a manual transfer switch. I do not have any problems with the AC side. its the DC side that is the issue. I see now that I need to eliminate the batteries getting charged from 2 separate chargers at the same time.

by 2 chargers you mean a solar charge controller and a converter?
Wait hold the phone is that giandel unit an all_in_one or an inverter_charger?

 

[John Frum]

Your picture shows pv panels going to the inverter that suggests its an all_in_one, confirm?
If it is this whole thing gets much simpler.

 

[John Frum]

I have a manual transfer switch. I do not have any problems with the AC side. its the DC side that is the issue. I see now that I need to eliminate the batteries getting charged from 2 separate chargers at the same time.

You can have multiple charge sources you just can't have a power loop between the converter and the inverter.

 

[John Frum]

Here is another option

                                                   |<->battery->inverter->ac_panel
shore_power->surge_protector->converter->dc_panel->|
                                                   |->dc_loads

 

[driesterer]

4.2 out of 5 stars 227Reviews

GIANDEL 2200W Pure Sine Wave Power Inverter 12V DC to 120V AC with 20A Solar Charge Control and Remote Control&LED Display and Dual AC Outlets &1x2.4A USB Port for RV Truck Car Solar System

 

[John Frum]

4.2 out of 5 stars 227Reviews

GIANDEL 2200W Pure Sine Wave Power Inverter 12V DC to 120V AC with 20A Solar Charge Control and Remote Control&LED Display and Dual AC Outlets &1x2.4A USB Port for RV Truck Car Solar System

Ok so not an all in one or an inverter/charger.