Another "Review My Wiring" Thread: Fuses / Breakers / Wire Size / Grounding

[MrM1]

@smoothJoey I'm having a second thought about the physical 400A switch.

The Growatt 12kw has a switch (On / Power Saver / Off) on the front of the case. So do I really even need the external BEP Pro 400A on/off switch on the battery cable?

 

[John Frum]

@smoothJoey I'm having a second thought about the physical 400A switch.

The Growatt 12kw has a switch (On / Power Saver / Off) on the front of the case. So do I really even need the external BEP Pro 400A on/off switch on the battery cable?

You can ditch the switch.
You should precharge the caps in your inverter using a resistor though.

Inverter Disconnect Switch with Precharge

To get the paper, click on the orange button at the top of this page. This circuit is designed as a disconnect switch that allows the user to pre-charge the inverter capacitors before turning the switch completely on. 26 June 2020 update: At...

diysolarforum.com

 

[MrM1]

You can ditch the switch.
You should precharge the caps in your inverter using a resistor though.

Inverter Disconnect Switch with Precharge

To get the paper, click on the orange button at the top of this page. This circuit is designed as a disconnect switch that allows the user to pre-charge the inverter capacitors before turning the switch completely on. 26 June 2020 update: At...

diysolarforum.com

Yeah I already have the resistors so good to go there. Thanks

 

[MrM1]

OK. Back to this design. It's been almost 10 months, but we've finally started.

Off Grid Farm ~ Mobile Power Cargo Trailer Build: Growatt 12kw Install

Installing The Big Growatt SPF 12000T 12kw Inverter into a Cargo Trailer for a 12k watt mobile power generator. All the panels will be installed on a pole/post barn and I will connect the Inverter's Solar Charge Controller MPPT to the panels via 8 awg SOOW cable and Anderson Connectors. First...

diysolarforum.com

@John Frum (or others). If I do not use an external switch, and I use a pre charge resistor, if the switch is off in the inverter, will the capacitors get charged. Or does the internal inverter switch need to be on to charge the caps?

 

[John Frum]

OK. Back to this design. It's been almost 10 months, but we've finally started.

Off Grid Farm ~ Mobile Power Cargo Trailer Build: Growatt 12kw Install

Installing The Big Growatt SPF 12000T 12kw Inverter into a Cargo Trailer for a 12k watt mobile power generator. All the panels will be installed on a pole/post barn and I will connect the Inverter's Solar Charge Controller MPPT to the panels via 8 awg SOOW cable and Anderson Connectors. First...

diysolarforum.com

@John Frum (or others). If I do not use an external switch, and I use a pre charge resistor, if the switch is off in the inverter, will the capacitors get charged. Or does the internal inverter switch need to be on to charge the caps?

From memory it depends on the inverter.

 

[MrM1]

From memory it depends on the inverter.

Yeah I was afraid of that ?