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  1. J

    Will 240 (120/240 appliance run off a transformer?

    Can you run the multi pluses directly into the auto transformer? I assume you want a breaker after because the supply from each inverter could be on either of the phases (though unlikely)
  2. J

    Will 240 (120/240 appliance run off a transformer?

    I don't actually have a stove yet. I'm doing the wiring but I will keep that in mind.
  3. J

    Will 240 (120/240 appliance run off a transformer?

    I like your suggestion. I didn't really understand what auto transformers do and how they were designed. I read a bunch upon and watch the videos. Not that I think I'm a expert or anything now. I'm "split" between having the inverters parallel or split phase now. I could use the auto transformer...
  4. J

    Will 240 (120/240 appliance run off a transformer?

    Does anyone know if a 240V wall oven would run of 240V (hot to neutral) instead of 240 (L1/L2, hot/hot, split phase). I just have 120 and I can't think of any other 240V appliances I would want so I was wondering if a oven would run off a step up transformer. I realized the step up transformer...
  5. J

    DC earthing wire for off-grid cabin

    Cool thanks. Do you think 3/0 would be heavy enough for a battery cable for two 24V Victron multi-Plus. Fused with a 350 amp fuse? I haven't actually bought the 4/0 wire and only have a 300 amp class-t fuse now. I was talking in terms of what I was planning on getting. I am building the cabin...
  6. J

    DC earthing wire for off-grid cabin

    I'm asking about grounding DC to Earth. I know some people don't do that but I think you're supposed to. Someone had suggested before connecting the DC Earth to the panels equipment ground. I felt nervous about connecting the two systems there. If the DC and AC Earth grounding attached to the...
  7. J

    DC earthing wire for off-grid cabin

    Some background: I have a small solar cabin. The cabins electricity runs off a 600 amp hour 24 volt battery. The main battery cables are 4/0 with a 400 amp fuse. The 24V inverters are equipment grounded to Victron negative bus bar using 2/0. (The inverters also have 2/0 conductors). I bought 2/0...
  8. J

    Grounding AC and DC systems to Earth

    For those of you with both the AC and low voltage DC systems do you ground both systems to earth on the same grounding rod? Do you use two separate grounding points/grounding rods. I thought I needed to have two separate grounding rods for each system. I was going to run the AC grounding...
  9. J

    i need help to determine wich lifepo4 to buy for a 30amp continous low watt hour battery

    If you can't find a 48 volt battery that is small enough for your project or cells that are small enough to build within the size constraints you could use a different battery voltage. This would require you to have a transformer which would not be ideal also because an extra device takes some...
  10. J

    i need help to determine wich lifepo4 to buy for a 30amp continous low watt hour battery

    You could consider using a 12 to 48 or 24 to 48 DC transformer to run the motor. Not exactly cheap for a high quality 30 amp one but it would cut down in the amount of battery cells needed in series to make the battery nominal voltage.
  11. J

    Must I use a clamp meter

    Do I really need a clamp meter when building a battery and installing a van electrical system? I have a Fluke 117 multimeter coming in the mail. Should I buy all the equipment I need to do a compacity test on new cells or just top balance them with the multimeter. The cells are new "Grade A"...
  12. J

    Charger for initial charging and top balancing 24V 200AH LiFePO4 battery

    As your primary battery charger? Doesn't that take forever. I'm bought the Kungbear to top balance/charge the cells and the 24V Multiplus to charge them once they are made into a battery.
  13. J

    Charger for initial charging and top balancing 24V 200AH LiFePO4 battery

    I also bought a Fluke 117 Multimeter so I can use that to test the accuracy of the bench charger. Battery cells should arrive tomorrow. I'm excited.
  14. J

    Charger for initial charging and top balancing 24V 200AH LiFePO4 battery

    I bought a Kungbear 30/10. Cool what do you use the 60 volts for? Should I use a voltage blocking diode when charging?
  15. J

    Charger for initial charging and top balancing 24V 200AH LiFePO4 battery

    I ended up getting the a open box Kungber from amazon for $65. I'm trying to figure out if I'll need a voltage blocking diode or not? Some people were committing on Wills top balancing video that a crowbar circuit could cause a short circuit across the outputs causing the power supply to fry.
  16. J

    Charger for initial charging and top balancing 24V 200AH LiFePO4 battery

    Has anyone used this power supply? I need one to initially charge and top balance my batteries. It seems to be the cheapest 4 digit digital, fine adjustment, 10A 30V battery charger on amazon. It has a 70% 5 star rating (131 reviews)...
  17. J

    what active balancer you think best to suggestion ?

    Is there an advantage using quiescent current QNBBM-8S Active Balancers over Heltec Active Balancers? Do the Heltec Active Balancer need to be used with JK-BMS to work. Can you hook the Heltec to the battery cells and let it do its magic? I believe the Electrodacus Solar BMS I'm using has some...
  18. J

    Fuse after a small step down transformer?

    I am thinking about installing some tiny fans in a piece of plastic to put in in the top of a roll down window under/behind a rain guard. The battery is 24V. If I use 12V fans and a inline step down do I need a inline fuse after the stepdown? I'm ordering a few parts from rock auto and they have...
  19. J

    Fuse size? Please help before I catch fire.

    I said I'll probably will probably never be much above 0.5 C. I don't know what my usage would be. What I was saying was the batteries are rated for 2 C discharge (400 amps). I said on average I would probably use 0.5 (100A) on average. I'l said that because will recommend a 0.5 discharge rate...
  20. J

    Fuse size? Please help before I catch fire.

    What do you mean the avg cont. load is 40AH? The 2/0 cable going from the battery will have the 100 amp DC circut and the 125 amp AC circut to the inverter. 125 x 1.5 = 187.5 + 100 a = 287.5 amp. I was thinking a 300 amp fuse for the battery fuse would be good. The circut for the inverter with...
  21. J

    Fuse size? Please help before I catch fire.

    Should I just go with a 300 amp fuse to be safe. I doubt I would even blow a 250 amp fuse. I just don't want to have to get a bigger fuse later on if I add more stuff. Honesty I feel uncomfortable with the 300 amp fuse on the inverter. Do you think a 250 amp inverter fuse would do. Victron...
  22. J

    Fuse size? Please help before I catch fire.

    I don't know exactly but I'm estimating it will be 10 feet.
  23. J

    Fuse size? Please help before I catch fire.

    My BMS is isn't fet based. I have a 100 amp relay cut off for DC panel. The 300 watt inverter goes through there. BMS can turn off the Multiplus, Orion and solar controller too. Battery continuous discharge rate is 2 C but will probably never be much above 0.5 C.
  24. J

    Fuse size? Please help before I catch fire.

    It's a 24 volt system not 12. Why not 3000 watt Victron is nearly the same price as a 2000. I'll probably leave it off and power it on only need slot of power. I have a little 24v 300 watt inverter for small 120 stuff like charging my laptop.
  25. J

    Fuse size? Please help before I catch fire.

    Cont. output power at 75 °F(VA): 3000 Peak power (W): 6000
  26. J

    Fuse size? Please help before I catch fire.

    My set up is a 200ah 24V battery made with 16 Frey (Fortune) 100ah cells). Between the battery box and the rest of the power system is a 32 in long chee fridge/freezer. Everything will be mounted fairly close together with room for air to circulate on a plywood sheet. The DC-DC charger will have...
  27. J

    Topsolar Brand flexible solar panels?

    I didn't realize they had any warranty. I need the solar to be 24v, lightweight as they are going in top of a not flat cargo box mounted on a flimsy station wagon roof rack. I like those perticular panels because they have good Amazon rating, their cheap, all black will look good with cargo box...
  28. J

    Fuse Size

    I know you fuse wires not x.... So please don't comment that. I'm trying to determine what size fuses to use with my 24V system. How much larger then the load should fuses be. I read a number of different answers given online ranging from 20-50% larger? My DC fuse panel is rate for 100a...
  29. J

    Topsolar Brand flexible solar panels?

    Has anyone used these flexible solar panels by top solar? Do you like them? They recently dropped in price! Going to put 2 of the 100 watt ones on top of a cargo box. https://www.amazon.com/gp/product/B08MKSG4B9/ref=ox_sc_act_title_3?smid=A3AL79HK0411E6&psc=1
  30. J

    Extended Battery Terminals

    With my battery design I can't have the contacts/cables coming off the side due to space so I'm creating custom extended terminals. I'm going to have someone weld a coper rod (probably 3/4 in diameter and about 2 in in height) to the center of a busbar that connects the ends of the battery (each...
  31. J

    Battery Connection Questions

    Photo didn't seem to upload.
  32. J

    Battery Connection Questions

    How should I attach the 6awg wire to to the batter. I thought the vehicle s battery wires were claimed together. I was going to buy a terminal clamp with an extra hole however the battery vehicles battery cable is a different style. Should I just add the wire on top of the others on the terminal...
  33. J

    DC Fuse Box with Negative bus bar behind positive terminals?

    Does anyone know of a DC blade style fuse box with a negative bus bar behind the positive. All the ones I can find have it either on top, bottom or on the opposite side of the negative. I really want one were both positive and negative contacts are on the same side. I know that could be...
  34. J

    30A fuse in a Victron lynx distributor

    That's a midi fuse. It is shorter with smaller post then a mega fuse. I would need an adapter or miniature bus bar of some kind. Someone on Facebook suggested I use a 40A mega fuse. I'll be using either 6 or 8 gauge wire so it won't be too big for the wire. I really appreciate your input. I'm...

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