diy solar

diy solar

Recent content by solar_trees

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    48v Multiplus-II: UL 1741 ?

    The UL Certificate for the 48v Multiplus II is on the Victron website now.
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    Series string shading summed up in 4 pictures

    If you have 2 parallel strings (String A and String B) and the bypass diodes activate on one of the panels in String A, will that reduce the output of String B?
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    Best Options for UL9540 inverter and battery on small 2.2kW system

    Are batteries under 1KWh exempt from the UL listing requirement? My state follows NEC 2020 and mentions this in its residential codes. I'm also planning to do a small system and the only way this is going to be possible for me is if smaller batteries are exempt.
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    UL Listed 12 or 24 volt batteries

    Do UL listed 12 or 24 volt batteries exist? So far the only UL listed batteries I've seen are 48 volt.
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    Any counties have a simple permitting process for off-grid?

    My county has a one size fits all permitting process you have to use whether or not you have a large roof-top grid-tie system or small off-grid ground mount. I was wondering if anyone lives in a county (or other AHJ), that has a simple, straight-forward permitting process for off-grid. I'm...
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    48v Multiplus-II: UL 1741 ?

    I just noticed that Current Connected lists a new version of the 48v Multiplus-II 3000VA Inverter as UL 1741 Certified. Is this a mistake or did the 48v Multiplus-II finally get certified? I didn't see any updates about it on Victron's website.
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    Solar connection to transfer switch: Hard-wire or 30-amp plug?

    I'm going to put the PV on the roof of my shed which is a few feet away from the garage, and the generator input would be on the outside of the garage (3 -15 feet from the shed depending on where I put it).
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    Solar connection to transfer switch: Hard-wire or 30-amp plug?

    I'm designing a small solar system that will supply continuous power to a generator transfer switch in my garage for 6 months out of the year and for the other 6 months will be used infrequently(as much as sunshine allows). I was wondering if it makes sense to connect this system to the...
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    Will this set-up work?

    What software did you use to make that drawing?
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    dc5521 adapter sizing

    I'm looking to get some dc5521 adapters so I can run my router off of DC power. I'm having trouble figuring out what size plug my router has so I can select the correct adapter. Any tips on how to figure this out? Also, any recommendations for where to buy the adapters?
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    Uses for non-UL Listed panels?

    Ok, interesting. Did your AHJ require the other components to be listed? The requirements of my AHJ are somewhat vague, but best I can tell UL listed components are required even for off-grid, but maybe it's up to the discretion of the inspector?
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    Uses for non-UL Listed panels?

    As I've been doing research for a DIY system, it seems like everything I want to do needs to be permitted and requires UL Listed panels. However, most of the consumer oriented panels from vendors like NewPowa, Renogy, BougeRV, etc. are not UL-Listed, so what are people using these for?
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    AC or DC line from ground mount?

    Do most jurisdictions still require UL listed components outside of dwellings?
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