diy solar

diy solar

Busbars / Terminal Blocks / LYNX Power In Dilemma

12000 ac watts / .85 conversion efficiency / 48 volts low cutoff = 294.117647059 inverter amps
294.117647059 inverter amps / .8 fuse headroom = 367.647058824 fuse amps
367.647058824 fuse amps * 3 inverters = 1,102.941176471 busbar amps

Just for reference the lynx distributor busbars are 8mm * 30mm = 240mm2
Look at the Deye datasheet. Battery current is limited to 250A. The 12kW is the grid interface I guess or the PV interface, I think they don't assume the interter to be fully sized for "off grid" mode.

But yeah, I'd plan on a 1000A busbar to have some headroom.

Victron Lynx 8x30mm I'm not so sure if it's just marketing or it can really do it... It seems a bit small, especially for some enclosed/insulated space.
 
Look at the Deye datasheet. Battery current is limited to 250A. The 12kW is the grid interface I guess or the PV interface, I think they don't assume the interter to be fully sized for "off grid" mode.
I guess this is essentially the same unit as a Sol-ark 12k.
So 250amps make sense.
But yeah, I'd plan on a 1000A busbar to have some headroom.

Victron Lynx 8x30mm I'm not so sure if it's just marketing or it can really do it... It seems a bit small, especially for some enclosed/insulated space.
240mm2 is ~= 500mcm
According to this table you need ~750-1000mcm
Which according to this link
is 380.0mm2 to 506.7mm2
 
I'm a bit split. Either I do a 2x2 Victron Lynx setup (or similar with the previously mentioned busbars) or I do a "DIY" solution with a 80x10 mm or 100x10 mm busbar and drill the holes myself.

I'm not so much afraid of the holes as I am about the platin. Pure copper oxidizes quite quickly, so a tin or nickel plating is highly reccomended, as I will be installing the battery cables as I expand. I won't be installing everything on first day.

I saw some posts here on this forum about members managing to get some tin or nickel plating with decent results, but I'm not 100% sold on this :unsure: .
 
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