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Rocketman

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    Rocketman reacted to ___ in Victron grid tied setup from scratch   
    I think you'll need 9 modules to make that work... 🙂But...
    When I ordered my last batch of 335W Canadian Solar modules, I was looking at the spec sheet when I noticed that little voltage chart sags dangerously close to the 50V open-circuit side at lower temperatures. Did the math quickly and realised I am already in danger of exceeding 150V on a 3°C morning with the older 320W modules I already have. Can't really put them three in series on a 150V controller. So I will be splitting my 6 modules into 3 strings of 2. I used to say up to three is fine... I'm changing my mind. On a 150V MPPT, these 72 cell Canadian solars can't go three wide unless you go for a 250V MPPT.
    Edit: (April 2019), I made a mistake in my calculation, see message lower down.

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