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    Combiner box limits?

    Thank you, for your time in answering my questions. kind regards Steve
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    Combiner box limits?

    Hello, I would be really grateful for experienced persons thoughts / input as I'm trying to avoid a mistake.... I have a 2S4P system that I am installing. 8 identical Panels, each panel: 330W, 32.6V (VMP), 10.2A (IMP) 10.9 (ISC) My array is East / West, as a result I am over-panelling. My...
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    Is it looking ok ?

    Thank you, you have been an enormous help, steve.
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    Is it looking ok ?

    Thank you LakeHouse, your explanation is helpful. Steve
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    Is it looking ok ?

    Thanks for your answer, If I've understood what you have said, in summary: 1: Although the array can generate a theoretical 2,640w, the MPPT will throttle that to a max of 1015w, which is within the 1080W limit of the combiner box ( so it's what is flowing through the combiner box, not what...
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    Is it looking ok ?

    If I could ask..... In the parameter data for the 6 string Eco-Worthy combiner box that I intend to use, it states the following: "Max input solar system wattage (12v) = 1080W" "Max input solar system wattage (24v) = 2160W" "Max input solar system wattage (48v) = 4320W" My battery is a single...
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    Is it looking ok ?

    Thanks very much, I will proceed........ kind regards Steve.
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    Is it looking ok ?

    Hello Sunshine_eggo, could I just check something else with you please? This is my thinking for cabling purposes: With my 2 string 4 parallel array, each string will create 2 x 38.12v ( 76 v ) and 1 x 10.2a. I am intending to use the: ECO-WORTHY 6 String PV Combiner Box & 63A Circuit Breakers (...
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    it's all in the connections

    I'm nearly there... advice please: My system: 2S4P, each string has 2 x 330w panels, each panel output is: 32.6v (VMP), 10.2 (IMP), & 10.9 (ISC). this gives a max output of 2640w to the charge controller. QUESTION: 1: Do I HAVE to use a combiner box, or could I use the standard mc4 connectors...
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    Is it looking ok ?

    Thank you very much. steve.
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    Is it looking ok ?

    I do not have a data sheet, the numbers are direct from the label on each panel, thanks you have been very helpful. Can I please one final question: (just ask for my own education): The fact that the power is coming from 2 panels, (not 1) on each positive cable, does not require a larger...
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    Is it looking ok ?

    Hello Sunshine_eggo, Thank you for taking the time to read and comment, it is appreciated, your comments are well received. I have a E/W array, half on east side, other on west side. This is why I am over panelling, thanks for your observations. Concerning fuse size, here is the data on the...
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    Is it looking ok ?

    Hello, I am about to mount a further 2 panels to my small emergency system, and I would very much appreciate if an experienced person here ( not a newbie like me- thanks) would take a quick look and comment if it's wrong! ( or right ? :) ) Please take a look at my numbers / panel configuration...
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    WHY THE HEAT ?

    who? whole cable
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    WHY THE HEAT ?

    i have observed the heat starts at the fuse lugs, and then spreads along the cables, until the who cable heats. the last place to heat seems to be the bat terminal. I'll try bypassing the fuse and bolting the lugs together... thanks for you continued thoughts.
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    WHY THE HEAT ?

    yes they are heat shrunk, maybe I'll make a new section ( bat to fuse ) as last comment, check lugs are really connected well and test...
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    WHY THE HEAT ?

    Yes I made a whole new cable with no fuse, connected and tested = no heat, perfect. I have not bypassing the fuse and connecting the two cable ( fuse ends) together, will try and see if any difference...
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    WHY THE HEAT ?

    Thanks for your reply. Are these voltage drop values to be expected ? I will make a new cable ( the one I will be removing is new ) from battery to fuse, paying careful attention to ensure the lugs are securely fastened, and test again.
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    WHY THE HEAT ?

    as previously clarified, the picture was when NUTS NOT TIGHTENED...if only it were that simple ...
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    WHY THE HEAT ?

    Hi TorC Here are the results for the following points you suggested I do, Your observations and thoughts would be very welcome: Big picture: A) I'm not sure if it "normal" to generate this heat under these conditions? B) understanding heat is wasted power, when I remove the fuse and wire direct...
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    WHY THE HEAT ?

    Thank you, will do. I'll let you know tomorrow. Steve.
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    WHY THE HEAT ?

    Thanks for input, no I have not tried either, will do. I'll learn how to do the v drop test, and complete. thanks.
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    WHY THE HEAT ?

    Could you explain what the 150v comes from please?
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    WHY THE HEAT ?

    Cable is good, (no heat when connected directly without fuse).
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    WHY THE HEAT ?

    Thanks for the chart, its helpful. I'm a little confused with the wire gauge: The Inverter states its spec as 12v 1200 watts continuous power , it does not state its amps. however If my calculations are right the amps value at 1200 watts is 100Amp. The Inverter states in the user manual the...
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    WHY THE HEAT ?

    Sorry, I did not think to explain the photos: The photos are of the fuse removed from the system, It shows the components and order of mounting. When it was attached and in use it was FULLY tightened, and not left finger tight as in the photos. kind regards Steve.
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    WHY THE HEAT ?

    Hello Bud, Here are pictures of the fuse and cable setup. I made the cables up, ensuring everything including crimps were very tight. the fuse holder is the Victron Energy Mega Fuse Holder, and a Mega Link Fuse Current Rating: 150A. One end from battery, other to inverter. Steve.
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    WHY THE HEAT ?

    Hello, Can I ask for advice please? I have a heating issue that I do not understand, My positive lead to the inverter is going above > 50deg c. (and would go higher if left) I have 1 x 300Amp battery, with a 12v1200 watt Victron inverter. When the inverter is near load max output at 1130...
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    IS THIS WHAT I SHOULD EXPECT ?

    Hello, I've just mounted my solar panels and I'd very much appreciate someone to spend a couple of minutes to check if my results are to be expected..... Here's the spec: Solar self build Generator Spec: 300Ah LifeP04 battery, max continuous charge rate 150A < 150v/70-Tr Victron SmartSolar...
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    Blocking Diode Question please:

    thanks again. I'm done!.... shows once again, you just need to ask the right people!
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    Blocking Diode Question please:

    Finally, can I please query: "0.75v @ 10.2A = 7.65W heat/wasted energy. 0.22v @ 10.2A = 2.24W heat/wasted energy." Mine are 117V and 10.2A they are not the same as above ? ( I'm probably misunderstanding something here so apologies) thank you.
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    Blocking Diode Question please:

    Thank you for your reply, really appreciated.
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    Blocking Diode Question please:

    How do you buy someone a beer on here ?
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    Blocking Diode Question please:

    Thank you for your advice, I don't think after speaking to you that i want to put another variable in the system that might fail. and it sounds as though the net benefit is negligible at best. thanks.
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    Blocking Diode Question please:

    Thank you so much for your reply and advice, clearly I've been over cooking this ( personality trait )
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