Franky Beuselinck
Member
- Joined
- Feb 12, 2017
- Messages
- 57
On request of some people a more indepth post of my DIY solarcombinerbox.
This box is designed for my solar array which is still in abuilding phase.
Finally I will have 12 panels in a 3S - 4P combination.
The DC combinerbox will combine all the DC currents and add some extra safety features.
It all starts with a box...
Drill 14mm holes to fit the MC4 connectors.
Installing the MC4 connector with 10 gauge wire/2.5mm.
Preparing the schottky diodes and drill holes 3.5mm and taper 4mm thread into the heat sink.
Use some coolpaste before installing them on the heat sink.
A test layout...
Wire it all up, the terminal blocks are awesome, I found it by coincidence whilebrowsing onAE.
I used Solar cable (6mm)between terminal block and DC breaker & terminal block and surge protection device.
Terminal block, 6 in - 2 out.
Don't forget to install the fuses....
Diagram....sorry I'm not that good at it, if not clear don't hesitate to ask me a question.
Data sheet schottky diode.
These are the links to all hardware I used to build this unit. Except the enclosure & heatsink which I had lying around from previous projects.
Cap fuse holder
https://www.aliexpress.com/item/32695643760.html
I use 10A fuses
https://www.aliexpress.com/item/32946610764.html
DC breaker:
https://www.aliexpress.com/item/32940325595.html
Surge protection
https://www.aliexpress.com/item/32890590691.html
Terminal block
https://www.aliexpress.com/item/32946942889.html
High power zener diodes
https://www.aliexpress.com/item/1412597935.html
MC4 connector
https://www.aliexpress.com/item/32835142335.html
Cupper lugs between fuse holders/zener & zener/terminal block
https://www.aliexpress.com/item/32846486368.html
Used tools:
MC4 crimptool
https://www.aliexpress.com/item/32882304975.html
Wire stripper:
https://www.aliexpress.com/item/32955348322.html
Good luck building your own, and again, don't hesitate to ask questions. Feedback appreciated too.
Frank
This box is designed for my solar array which is still in abuilding phase.
Finally I will have 12 panels in a 3S - 4P combination.
The DC combinerbox will combine all the DC currents and add some extra safety features.
It all starts with a box...
Drill 14mm holes to fit the MC4 connectors.
Installing the MC4 connector with 10 gauge wire/2.5mm.
Preparing the schottky diodes and drill holes 3.5mm and taper 4mm thread into the heat sink.
Use some coolpaste before installing them on the heat sink.
A test layout...
Wire it all up, the terminal blocks are awesome, I found it by coincidence whilebrowsing onAE.
I used Solar cable (6mm)between terminal block and DC breaker & terminal block and surge protection device.
Terminal block, 6 in - 2 out.
Don't forget to install the fuses....
Diagram....sorry I'm not that good at it, if not clear don't hesitate to ask me a question.
Data sheet schottky diode.
These are the links to all hardware I used to build this unit. Except the enclosure & heatsink which I had lying around from previous projects.
Cap fuse holder
https://www.aliexpress.com/item/32695643760.html
I use 10A fuses
https://www.aliexpress.com/item/32946610764.html
DC breaker:
https://www.aliexpress.com/item/32940325595.html
Surge protection
https://www.aliexpress.com/item/32890590691.html
Terminal block
https://www.aliexpress.com/item/32946942889.html
High power zener diodes
https://www.aliexpress.com/item/1412597935.html
MC4 connector
https://www.aliexpress.com/item/32835142335.html
Cupper lugs between fuse holders/zener & zener/terminal block
https://www.aliexpress.com/item/32846486368.html
Used tools:
MC4 crimptool
https://www.aliexpress.com/item/32882304975.html
Wire stripper:
https://www.aliexpress.com/item/32955348322.html
Good luck building your own, and again, don't hesitate to ask questions. Feedback appreciated too.
Frank