diy solar

diy solar

Recent content by time2roll

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    Inverter outlets

    A good 3000w inverter will have a hardwire connection.
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    8% voltage drop and running 80amps in 4 AWG for 300'

    I would be looking at a 600v controller to put all 16 in series. or as many as possible.
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    Debunk: Alternator DC to DC charger not required for big Lithium Battery

    Ok consider measuring alternator output running the A/C and headlights at the same time. In general I only recommend 20 amp DC-DC converter on a factory alternator as it can draw in 30+ amps to correct the voltage. Yes there are circumstances where all will be fine at a higher level. If all...
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    Drinking water from thin air

    Depends on being comfortable with potential contaminants. Or use secondary filtration.
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    Debunk: Alternator DC to DC charger not required for big Lithium Battery

    80 amps from a 120 amp alternator for an added system seems a bit much. Many alternators do not have a current protection limit and can fail if they go over design maximum.
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    Power storage/capacity problem??

    Yes but not those batteries. Move to lithium. While at it move to 24 or 48 volts. The existing system is but a toy for very limited use.
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    Conduit, over, under, through Privacy fence?

    At least with vinyl it is easy to cut it away when replacing with a block wall.
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    Conduit, over, under, through Privacy fence?

    I would drill the post and run straight through. Looks fine on a block wall the electrician drilled on my fence. Straight shot is easier to pull also.
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    Grid Frequency Problems??

    Best way to extract grid power with bad frequency is to get a charger that does not care much and charge the battery direct. Same goes for voltage. Although not everything goes to 270. My Meanwell says 90 to 264v and 47 to 63 Hz.
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    Charge and discharge differential rates between packs

    At 15% delta on a fairly low draw seems a bit high. Start by checking the connections are clean, tight and balanced. Especially on the 9.2a slacker. Next would be to measure voltage drop at each of the connections to find the issue.
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    RV electrical diagram for review with 2000w inverter

    Yes 250a should be plenty. I have two Overkill BMS at 120 amps each. Inverter does draw less amps on lithium due to higher running voltage.
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    RV electrical diagram for review with 2000w inverter

    Single 400 ah battery would work as long as the allowed discharge is 200+ amps. Best to post a link to the battery before you buy. Two in parallel is easy to balance. 2x the diy 280 with 120a+ BMS (each) would be my choice. Works well on my RV trailer.
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    Debunk: Alternator DC to DC charger not required for big Lithium Battery

    Yes. The real test will be when the battery is somewhat low.
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    RV electrical diagram for review with 2000w inverter

    Surprised to see the Samlex in with all the Victron. My only real comment would be the battery might be a bit undersized. Inverter alone can easily draw 150 amps and while the diy 280 might be fine with a 200+ amp BMS the premade battery could have a lower limit. And while many cells are...
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    Debunk: Alternator DC to DC charger not required for big Lithium Battery

    As long as the fuse holds, it would be OK to call it good. The real test will be when the battery is low. 125 amps off a 150 amp alternator could easily allow overload of the alternator. To know what is going on... a clamp-on DC ammeter would show amps getting to the house battery. Yes...
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