Using Romex To Connect Solar Panels

Connecting solar panels in series.

Using romex to connect solar panels.

Solar wire types also known as solar panel wire and pv wire refers to the type of wires used to connect your solar panels with the rest of your photovoltaic system. More protection is always better. Romex cable comes with multiple conductors encased in a second insulated covering. Romex is available at home depot and is much cheaper than 10 gauge automotive wire.

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. 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. 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. Since i am using a transformerless inverter i do not need to ground the inverter using grounding electrode.

Connecting solar panels in series. 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. When solar panels are wired in series the voltage of the panels adds together but the amperage remains the same. For my installation of rv solar panels 10 gauge household romex wiring was chosen for a few reasons.

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. On the other hand if our two solar panels have both different wattage and different voltage then parallel connection is not possible since the panel with the lowest voltage would behave like a load and would begin to absorb current instead of producing it with the. Just like a typical battery you may be familiar with solar panels have positive and negative terminals. 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. Until i put in a whole house solar system i m setting up a small system 400 ah 24v batteries 600w solar panels. That means the 10 gauge wire works as if i had used 8 gauge automotive wire.

They can be wired in parallel. Romex 10 2 is good for 30a. Why i chose 10 gauge romex wiring. How to choose and use the right wires with your solar system.

The romex 10 2 will be inside garage only.