4 MPP LV6548 / 30 kW EVE 304ah LiFePO4 battery/ 14 kW PV array

[raurre]

Why build it once when you can build it twice?

 

[raurre]

New transfer switch.

 

[raurre]

Should have done this to start with.

 

[Samsonite801]

Should have done this to start with.
View attachment 143922

Looks very nice as always with your work!

I also bought 2 inverters first, then bought 2 more a year later, I still don't have any of mine installed yet, but hopefully will go in this Spring/Summer hehe... Later on, after I thought on it more, I just felt better about having 4 too...

 

[Patrick1]

New transfer switch.View attachment 143730View attachment 143731

Why did you go with 4 wires?
Did you have to buy the box?
How much was it?

Thanks.

 

[raurre]

Why did you go with 4 wires?
Did you have to buy the box?
How much was it?

Thanks.

This was an Item that came from a plant I do work for. I would only use three of the four poles on the transfer switch. It is a prebuilt unit. But the switch by itself runs around $1100. https://www.automationdirect.com/ad...a-_switches/manual_transfer_switches/41504026
I bought it for a fraction of that price. Sad thing is, I have almost talked myself into keeping my two pole transfer switch. The more I have thought about it I think I'm going to remove all the ground/neutral bonding screws in the inverters and use a common neutral. So the 4 pole switch may be put in my inventory.

 

[raurre]

Lord I forgot how much fun it is to try and hide these god awful communication cables.

 

[Skypower]

I just slotted a hole near the bottom of the inverter and stuffed the excess into the wall. Out of sight, out of mind.

 

[BenQ]

Finally got the first 304 eve pack assembled and installed. Figuring out the best setting may takesome help .View attachment 76961View attachment 76965

I’m inspired to clean up my own wiring lol

 

[Skypower]

I love the wire way method you did, much cleaner than mine. Next time. If had to do it over again I’d build a plenum box from hardybacker to mount them on to draw the hot air from the sweet spot. Mine get hot in summer and I don’t want to risk heat damage or de-rate the output so I rigged up this ugly contraption. But it works lol!

 

[raurre]

Success! I think I would rather pull 3 pieces of 2/0 wire through a1/2 conduit than put those communication cables back through that plastic wire cover.

 

[Skypower]

I take it that com cable was popping out like bop-a-mole?

 

[raurre]

Distribution block for AC output. The next step makes me nervous. I have to update the firmware on all the inverters to make them able to work together.

 

[Skypower]

I hope the update goes smoothly. I’ve been thinking about getting a backup inverter or two and that’s been on my mind too.

 

[raurre]

Had to relocate all my DC distribution blocks on order to be able to make all the cables equal length. I also made room for the next battery that will inevitably find it's way into the cabinet.

 

[Skypower]

Just FYI. Ancor cable has a bit less resistance than Windy Nation cable. You can measure it with an internal resistance meter once the lugs are on. So you don’t want the two bands the same length to two different banks. But it may let you run a foot or two longer with the Ancor.

 

[raurre]

I would have been doomed if it were not for youtube. The first two inverters did fine on the firmware update with the cable that came with the units.
The second older to units not so much. Fortunately a youtube video explains how to add a 3.3k resistor in order to make them work.

 The next question is do I have to update the U2 firmware as well in order to make them work together??

 

[raurre]

It's like deja vu all over again.

 

[Skypower]

Lookin good! Wishing you many trouble free kWh’s.

 

[raurre]

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