I recently found out that our sole ground rod is only 4 feet long. That said, I want to add a properly-sized ground rod to "improve" the grounding system and hopefully comply properly with the electrical code.
Our current electrical system is the one in blue, where M is the meter, B is the breaker. Both are grounded via #8 wires connected to the ground rod. The ground bus bar in the main panel is also connected to the ground rod via a #8 wire.
The existing ground rod is in front of the house. However, there isn't much space in front to place another rod there. That said, I'm planning on putting the additional rod at the back of the house. In effect, the two rods will be around 20 meters apart.
Now, the question is: Can I just run a #8 or #6 wire from the 8-ft ground rod back to the Main Panel and just bond it to the ground bus bar, in effect bonding the two ground rods? Or do I need to run a separate wire all the way from the 8-ft rod to the 4-ft rod? Note that the Main Panel will be closer to the 8-ft rod. They will be just 7-8 meters apart.