Jump to content

DB box connections

Recommended Posts

Good day,

As I am new with solar, busy with all the researching. It’s my nature like to understand how things work.

Is there somewhere a link how DB board gets connected with solar power? Still try figure out,  if for example  run a hybrid system, where is the inverter connected to your DB board, able to feed the house, and the excess energy can flow back into the grid?




Link to comment
Share on other sites

Hi Morne. 

Normally looks something like this. 

  1. DB gets split in Essential and non-essential loads. 
  2. Grid feeds the Non-essential loads and the Inverter 
  3. The inverter output feeds the essential loads. 
  4. Grid Meter connected to the mains  will allow that excess PV is used to feed the Loads on the input side of the inverter, but will stop power going to the grid. 
  5. Change over in the system will allow for quick bypass should inverter fail.   
Link to comment
Share on other sites

Thank you Jaco, starting to make sense now.

Please see photo below. 
This photos below look so simple, but when I look at the installations on the forum, looks way more complicated, lots CB’s, and DB’s etc.

Is it correct to say, where the mains enters Main CB, will the output from there go straight to the Inverter? And from the inverter back to DB connected to the ESS CB’s?



Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...