Solar Panel Connectors 10AWG Compatible with MC4 Connecter to SAE Adapter PV Extension Cable Wire for RV Caravan Solar Panels Battery Charger kit with Two SAE to SAE Polarity Reverse Adapters

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And even with fridge, radio, plotters, autopilot and occasional radar it seems that these panels are keeping up with my usage. If you connect two of them in parallel, your total amps would be 16 amps Imp and the voltage would remain at 18 volts Vmp.

Just in case you need more to think about - you might consider not purchasing the solar controller with the panel and locating a controller in the trailer. I'm sure people will have a fit when I say how I solved my wire problem between the panel and the camper.

Whether you've combined your modules with the multibranch connectors or with a combiner box, you'll need to understand how to select and use MC4 extension cables.

For the record, I switched everything over to SAE connectors to avoid the bad connections from "cigarette lighter" type plugs which suck. I've also read that energy loss is less a function of the connectors and more about distance and gauge of wire. I retrofitted my trailer with one and use a SO cord with a Marinco connector on one end to fit the trailer and MC4 connector on the other end to fit the panel.When we increase current without increasing voltage there is a very good chance we will need a larger wire to avoid voltage drop from the parallel connection to the destination.

I had the same concerns about the MC4 connectors but have been using them for 6+ years now without a problem.

Since it is a portable system I intend to babysit it anytime it is in use and much prefer a small, one time, added cost to have the faster charging panels.

I can say, as someone who likes to park in the shade, I am often placing my solar panel at the limit of my wire's reach (20-25'). Modern solar modules tend to use the MC4 connectors because they make wiring your solar array much simpler and faster. Panels connected in series are defined as Strings, Panels connected in parallel are defined as Branches. One type accepts two male MC4 connectors on the input side and has a male MC4 connector for its output. When you use solar panels on a house or cabin, the distance that the wire must travel is normally so long that using an extension cable is no longer practical.so their plus factors are that they hold together well and their negative factors are that most users find them a challenge to take apart. You can then strip back the insulation from the cut ends and terminate them to a bus bar or circuit breakers. Solar-specific, UV-resistant extension cable with a 4mm² conductor cross-section for connecting solar panels. They plug-in either way so you need to keep track of the + - yourself when you're making the wires up to receive them.