Ive run the CAT5 cable above the garage doors going to each of the evses, and this one Ive designated as the secondary device and the one over here in this side on the right side of Disney is the primary device there you go powering each one of The wall boxed EVS, is a 50 amp breaker that I had installed so that 50 amp is sharing or is shared by its a hard amp service by the way Im disconnecting for an amps. So each one of those wall boxes shares this single 50 amp service. Even though theyre rated at 40 amps, so both of them are on theyd, be trying to draw 40 amps from each from here. So itll be 80 amps trying to draw from a 50 amp breaker, which wont work so thats. Why were looking at the power sharing option for the wall box evses? I created this sketch that shows the various components for using the power sharing option on these wall boxes. Basically, theyre just a few things to look for the first is to designate which ones going to be your primary and secondary devices. So this is my primary, and this is my secondary. The next thing is to run the Cat5e cable between the two devices, and we are only going to use two of the wires inside of the Cat5e cable. The Cat5e cable is recommended in the instructions provided by wallbox. The next thing is once weve opened: each wall box were going to look at the switch inside for the terminal and non terminal switch positions by default.

The boxes had switches set to the T position and the dial selectors were set to seven. So we have to change the selection on the primary to eight or nine and the secondary to zero. Last, when we connect the wiring for the devices, one wire is going to connect to the first position on each of the wall boxes and the second wire is going to connect up to position 4 on the primary and position three on the secondary, so theres. The wiring and overall instruction for the wall box power sharing option. So what Im going to do now is remove the ring around the wall box and the face plate and theres. One Torx screw right here and theres one Torx screw in each of the four corners to take the wall box off because its a Nema 4 rated box to be mounted Outdoors or indoors to deal with inclement weather. But it has five Torx screws to remove. To take the face plate off, so I took the screws out of the face plate. I put one back just to hold the face plate up, but we can open it here. So lets take this last one out and you can see its held together by this ribbon, cable. So inside the box, which you cant see very well but theres, the wire connector down here, theres a t switch up here, the T or non t, and then this right here is the setting.

If you have a primary or secondary um unit and again, in my case, this ones, primary, the other ones secondary the default – is that the switch up here is in t mode terminal mode and in my case, because theres only two of them theyre, both in terminal Mode thats, fine on the dial switch Im going to change this to be number eight currently default is at zero. I believe so well change this dial to read eight. So, as you can see, the face plate is off. I disconnected the ribbon from here, and this is the terminal not terminal switch, and this is the dial, as I mentioned, for um, the selector of primary non primary turns out. This was on seven when it was shipped, so I just dialed it over to eight and now thats all set. The next thing we have to do is connect the wiring and again this is just a CAT5 cable and you only need two of the wires in my case, Im going to select blue and green it doesnt matter which two you pick as long as youre consistent About that so Im gon na pick the blue and green wires Im going to basically tape up the rest of them to be around the stock of the cable. So only blue and green are left sticking out Ive taken a little bit of the cover off. So the blue and the green have some copper showing, and the last piece is on this wall box.

This is obviously the power connection which you can see during the other video I disconnected, and so we werent playing with any hot Electronics in here. The second one is for the cable to the j1772 plug and theres a middle one here that you can use for another connection, I guess so you have to hold the ring on the inside while you take it out from the bottom, so Ive taken the plug Out of the bottom and thats, what Im? Putting the Cable in Im probably going to end up? Maybe not drilling a hole through here and putting it through, but the directions from wall box say if you can to run the wire up the power here into the wall box. That seems like a bit of a challenge since mine is connected in the garage. I dont have inclement weather its, not really a problem for me so having it go through. The middle connector is fine um, but I will probably want to seal it off so dirt and dust cant get inside of it again. Having this open invalidates the fact that its a Nema for enclosure – I mean, if you could spray water on it and wind and snow, and it would still maintain its water tightness, taking this out and validates that so, if youre doing this outside, I dont recommend this Method for you, thank you. Im gon na have to cut this off and re strip it give myself a little bit of room to work with inside.

Here were going to continue the process of connecting the wire to the terminal block here. The first green toner block on the bottom on the left, and there are two wires – the blue and the green. You can see Ive taped CAT5, so all the other wires are down and clean Ive got the blue and the green. The blue Im going to put in position one which is the bottom left corner of the terminal block the blue in the secondary, is going to go in the same bottom left corner terminal spot again. This is the primary secondaries over there and the primary the blue is going to go in the bottom left. The green is going to go in position three third from the left and then on the secondary charger. The green is going to go in position. Four. The fourth one from the left on the bottom on the left, terminal block, okay, theres, two green ones here, two green terminal blocks. The left terminal block is what were working with blue position: one green to position three on the primary blue to position, one green to position four on the secondary, so all you need to do is get a small screwdriver, very small fry glasses and it pushes in, But you need to put your screwdriver in the top part of it kind of release the lever. So there goes position one now Im going to put this in position. Three push it in push that, in your rings, tight, everythings, tight, okay, so the wiring for this is actually done.

Pull this out just a little bit and there you go so now were going to reconnect the face plate, putting the ribbon back in make sure its all snug then Ill put the screws back on the Torx screws, one two three four and then put the face Plate on with the screw in the bottom – and this will be all set so Ill, do the same thing on the other side, everythings identical except the fact Ill put the Green in the fourth position and the dial, instead of being in position, eight will be at Position, zero, otherwise theyre the same youre, all in t mode um. So there you go so here. I am at the secondary wall box primary ones over here secondaries over here Im going to take the Torx screws out of the face and out of the bottom of the Ring Ill strip, the wiring connect it all up, pull the power on it before I do Any of those things and then reconnect the wiring, the blue in the bottom left terminal position one the Green in position four, since this is the secondary box, make sure the dial is set to zero and the terminal non terminal switch is set to T then Ill. Put it all back together and we will see if the error code goes away on the primary wall box. Interestingly enough, after about 30 seconds, the secondary wall box turned green.