diy solar

diy solar

Recent content by richm

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    Use solder paste on terminals-busbar to improve conductivity?

    Regarding using silver paste, here is a video of an electrician talking about using Noalox anti-corrosion paste to improve the long-term conductivity of a cable crimp: Noalox claims to "penetrate and cut aluminum oxidation improving efficiency and service life of aluminum electrical connections".
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    Here's my plan to install a 230V Mini-Split

    I'm trying to plan a system for a 120V 9K BTU 25 SEER mini-split with around 800Ah 12V LIiFePO4. But I also looked at doing 400Ah 24V LIiFePO4, but the costs were always higher, and the system was more complex. I'm curious. Which parts of the system are a deciding factor in the choice of 24V...
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    Here's my plan to install a 230V Mini-Split

    This is just a wild guess, but the additional transformer could decrease the power factor, causing a decrease in efficiency. The inverter will be designed to compensate the power factor for the inductors in the inverter itself, so a 240v inverter might be more efficient.
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    Here's my plan to install a 230V Mini-Split

    Ah, rats, you're right. These are 25 SEER, and they have wall mount evaporators that are 120V, but their ceiling cassette units are 230V. https://cooperandhunter.us/products/single-zone-mini-splits/sophia-singl/ceiling-cassette/
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    Here's my plan to install a 230V Mini-Split

    There are 9K BTU mini-splits that run on 120V AC: https://cooperandhunter.us/product/CH-SR09SPH-115VI-O/
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