![]() ![]() Now, I’ve got a complete positive and negative busbar. Flipping the bottom lug ‘upside down’ will make these two lugs fit together better. I don’t have enough room for the washer and lock washer for the shunt so I’m just going to leave them out. I need to position the copper bar itself between the two lugs.įor the remaining two wires on the far left side these two lugs need to be drilled out with a step bit to fit the bigger bolt of the shunt.Īfter those lug holes have been enlarged, I’m going to bolt those two lugs and the copper bar to the “Load and Charger” side of the shunt with a 11/16” socket. Using the wiring diagram from explorist.life/solarwiringdiagrams as a reference, I’m going to attach the wires with the 5/16” lugs to the 3-hole busbar using the hex bolt setup I just mentioned tightening it up with a 1/2” socket and wrench. Now I’m going to need the 3-hole busbar, two – 1” long – 5/16’ x 18 hex bolt, 4 washers, and 2 lock washers. The fuses simply slide in place between the washers like this: Slide the wire lug over the ANL Fuse holder stud replace the washer and lock washer. All of the positive wires will fit on the ANL Fuse holder studs with a 5/16” lug. Now It’s time to position all of the wires and attach them to the positive and negative busbars using a ⅜” rachet, 6” extension, 9/16” socket, and an 11/16” Socket. I would position the shunt and positive busbar like this with the “ Battery” side of the shunt directly under the right-most ANL Fuse holder:Īfter those are secure on the side of the ANL Fuse holders that are opposite the positive busbar I’m going to remove the top nut, lock washer, washers and loosen the bottom nut with a 9/16” wrench and spin it up off the base of the ANL fuse holders about a quarter inch. Now would be a good time to fasten my Positive Busbar and the shunt from my Victron BMV-712 Battery monitor in the location that it is going to live within the system. Next, I’m going to install the ANL Fuse holders onto the 3 holes coming off the load side of the master disconnect switchĪfter that, I’m going to do the same thing on the 2-hole busbar side of the master disconnect switch but the one difference will be that I am not going to have the washer below the busbar nor the lock washer above the busbar as there will not be enough room once the wire lug and ANL Fuse is installed. I’m going to position these two busbars so that when I’m looking at the face of the switch the 2-hole busbar is on the left and the 4-hole busbar is on the right. Now I’m going to connect my 2-hole and 4-hole bus bars to my master disconnect switch using a 9/16” Wrench. Anyway, copper is a soft enough metal so with a fresh, sharp drill bit this process is fairly painless. If I had a drill press or even a high speed corded drill, that would be much preferred… but here we are. The next thing I am going to do is to clamp those pieces of copper into my bench vise and drill some holes in the copper.įor this I’ll be using a 7/16” Drill Bit, a ⅜” Drill Bit, and a 5/16” Drill Bit spun by a Dewalt Cordless Drill. I’m using a Dewalt Portable Band Saw and SWAG Table, but since copper is a soft metal this could also be cut with a hacksaw. If using 4/0 wire, please pre-measure to verify hole placement. The below diagram has been tested for 2/0 wire equivalent copper bar and switch. Here is a cut and drill list of the pieces I’ll be making. The first thing I’m going to do is to cut and drill my copper bar. Victron BMV-712 Battery Monitor ( Shunt): Using 4/0 wire between your batteries and Inverter? Upgrade your copper bar to 1/4″ x 1 1/2″ rather than the 1/4″ x 3/4″ we use for a 2/0 wire equivalent. The links throughout the rest of this blog post SHOULD be updated with blue sea fuses and fuse holders but if you stumble across non-name-brand fuses or holders, please do not use them and let me know where you see them. If you REALLY want to use the DIY solution on this page, that’s still fine but I MUST recommend using Blue Sea Fuse Holders & Blue Sea ANL Fuses as they are tested and certified pieces of equipment. ![]() I have already place the Lynx Distributor in my most recent diagrams at and will be phasing out the diagrams that do not use the Victron Lynx Distributor. So… Moving forward… I HIGHLY recommend using the Busbar and fuse holder solution that is the Lynx Distributor. Quality control on these have gone DRASTICALLY downhill over the last few months and many have had issues with these not being able to flow their rated current, heating up, and melting the fuse holders. IMPORTANT UPDATE: The fuses & fuse holders shown in the pictures and the video are NO LONGER RECOMMENDED. ![]() This DIY Busbar system is a great way to keep the main fuses nice and organized in a small space giving your camper van solar install a professional look. ![]()
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