I'm looking to wire up an off-grid system. What I'm stuck on is battery placement.
The likelihood is my batteries will need to be quite far apart (almost 2 metres). My question is how does this relate to the wire thickness I should use to add components to the circuit?
To flesh this out in case I'm not being clear: if I only use one battery, the fusebox can be 50cm away from both positive and negative terminal. Using a certain wire thickness, this could result in an X% voltage drop since the return distance of the current is 1m.
If I use the batteries in parallel, the positive terminal is now 50cm from the fusebox, whilst the negative terminal (on the other battery) is now 1.5m away.
- Does this means the return distance is now 2m, resulting in a 2X% voltage drop?
- Or does it include the parallel connections, meaning it's 3.5m or 5m?