For my new build, I am not planning a photovoltaic system initially, but I want to keep the option open for the future as much as possible.
Which cables should be installed from the meter cabinet to the roof so that a photovoltaic system can be retrofitted later as easily and cost-effectively as possible? How many cables? What cross-sections? How much space should be allowed for in the meter cabinet?
Which cables should be installed from the meter cabinet to the roof so that a photovoltaic system can be retrofitted later as easily and cost-effectively as possible? How many cables? What cross-sections? How much space should be allowed for in the meter cabinet?
Detlev69 schrieb:
But you know the sky-high prices installers sometimes charge for cables. Since I install all my other cables myself, why should I make an exception for photovoltaic cables? You don’t know which ones, how many, and how long.
Lumpi_LE schrieb:
Since it’s also about warranty, I wouldn’t include any third-party components in my system. Well, as a professional, you should know which cables are installed there and what they are used for. If they’ve been there for a while, you perform a test and know if they’re okay. That doesn’t take more than 10 minutes. If it’s simply the wrong cable, of course I wouldn’t take the risk either and I agree with you. But many just tell the customer it’s not allowed in order to make a bit more profit.
Detlev69 schrieb:
I have found out by now: you need real solar cables, double insulated, certified, 6 mm2 (10 AWG). Two of those. Plus a 16 mm2 (5 AWG) grounding cable.Lumpi_LE schrieb:
It depends on the size and whether power optimizers and/or multi-string systems are used.There are even more factors to consider.
It’s better to install empty conduits in advance. When you eventually start this project, talk to the suppliers beforehand and let them know you want to install the cables yourself. They will tell you which ones they require. That’s currently the best approach.
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