Remove combiner box install eg4 6000xp

[scaudy]

Currently have 16 rec n peak 330 watt panels wired 4 in seires going to a combiner box 100 ft from array at the power room.

Current charge controler can handle the hogher AMPs but am considering going to 2 EG4 6000xp all in one inverters in parallel.

Question is how to wire the 4 strings of panels to the 6000xp.

• Vmp: 34.6 Volts
• Voc: 41.0 Volts
• Imp: 9.55 Amps
• Isc: 10.33 Amps

Would the 4 panels in series be enough to power the eg4 6000xp?

Is it possible to series the panels together at the combiner box location 100 feet from the panels? Making 8 in series.

The Eg4 6000xp specs
Startup V 100
Input range 100 - 480 V
MPP operating range 100 - 385 V
Nominal MPP V 320.

Any thoughts on best option? Thanks!

 

[DIYrich]

I would rewire at the panels into 8 panels on a string. While possible to do at the combiner box, it adds 200 ft to the length of the string, and resulting voltage loss.

 

[scaudy]

Thanks for the response. Everything at the panels is in conduit then runs underground. I did some looking and it does look like I can get to and connect in series at the panels so that is the direction I will go.

 

[JWLV]

The 6000XP has two MPPTs. You can put 10 panels in series (10 x 41 volts VOC = 410 volts) on the first MPPT and the remaining 6 in series on the second MPPT. Then you have room for future expansion if you want to add 4 more panels to the second string. You can also use much smaller cable with less than 10 amps running through the first MPPT. You can probably use 14 AWG or 12 AWG.

 

[Jsauerii]

The 6000XP has two MPPTs. You can put 10 panels in series (10 x 41 volts VOC = 410 volts) on the first MPPT and the remaining 6 in series on the second MPPT. Then you have room for future expansion if you want to add 4 more panels to the second string. You can also use much smaller cable with less than 10 amps running through the first MPPT. You can probably use 14 AWG or 12 AWG.

Just remember if you live where it gets cold there you will overload and burn out you 6000Xp's at -37F with the 10 panels recommended. I would do 2 strings of 8, you can add one of each to each 6000xp, 2 to one will overrun the nominal amperage of 17A

Those particular panels have a -0.27 C Temp Coefficient. The colder it gets the more power you produce.