Using Romex To Connect Solar Panels

When solar panels are wired in series the voltage of the panels adds together but the amperage remains the same.

Using romex to connect solar panels.

Romex 10 2 is good for 30a. More protection is always better. Just like a typical battery you may be familiar with solar panels have positive and negative terminals. Connecting solar panels in series.

Connecting solar panels in series. The series connection is done by wiring the positive terminal of each panel to the negative terminal of the next panel a connection similar to the ones of the christmas lights until the final panel is connected to the charge controller or inverter. Solid wire passes electricity at a capacity 1 size greater than stranded wire. That means the 10 gauge wire works as if i had used 8 gauge automotive wire.

The romex 10 2 will be inside garage only. My reason for choosing to go with 24v is that i d like to use some of the circuits already in place connected with 12 awg romex wire. For my installation of rv solar panels 10 gauge household romex wiring was chosen for a few reasons. Why i chose 10 gauge romex wiring.

So if you connect two solar panels with a rated voltage of 40 volts and a rated amperage of 5 amps in series the voltage of the series would be 80 volts while the amperage would remain at 5 amps. Choosing the right wire for your solar energy system is critical to it s functioning properly and remaining undamaged. 2 romex into the attic the romex probable needs to be clamped so hopefully i can position the solardeck in a way that a short run of plastic conduit lands near a diagonal roof member to mount a junction box which will only be used for the clamp no actual electrical junction. They can be wired in parallel.

But now i d rather not. Stringing solar panels in series involves connecting each panel to the next in a line as illustrated in the left side of the diagram above. If we have two solar panels with the same voltage but different wattage there is no problem. Romex is available at home depot and is much cheaper than 10 gauge automotive wire.

Romex cable comes with multiple conductors encased in a second insulated covering. My question is if there will be problem with me using romex 10 2 to connect inverter to ac disconnect that sits on the outside wall of the garage. Since i am using a transformerless inverter i do not need to ground the inverter using grounding electrode. Some circuits would be dc and some ac via an inverter.

How to choose and use the right wires with your solar system.