Balcony power plants are conquering garage roofs and balcony railings throughout Germany. Anyone who has built a mini PV system will be asked by friends and relatives in no time at all if they would like to install two panels to reduce their electricity bill.
The unusual connectors on the back of solar modules are of the MC4 type, a connector design that is only found in solar systems. The waterproof and weatherproof plugs have many advantages and fortunately they are relatively easy to install yourself. The c’t solar expert Jan Mahn shows live in the c’t uplink how to make extension cables in the perfect length for solar systems. Together with Andrijan Möcker and Pina Merkert, he also explains what to look out for with the solar cables.
Jan’s article about the plugs appeared in c’t 10/2023 and they’re available at kiosks, im Browser and in the c’t app for iOS and Android.
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