hogback
New Member
Hi All,
Helping a friend install panels to run into an eg4 6000. We have 16 420W commercial modules, and will do 4 strings of 4. 2 strings will combine on the roof, and each 8 module group will go into their own mppt on the eg4. The specs of the panels are as follows:
vmp 72.9
imp 5.77
voc 85.6
isc 6.2
The first thing I need is a set of breakers/disconnects and a box at the eg4 unit that is rated for over 342V and 15A. I've only ever used 150V midnite stuff before. Any suggestions? I know I don't need current interrupting capability rigorously, but the eg4 calls out for it. I think I've seen some breaker configurations that stack lower V breakers to bring the V rating up - does that make any sense?
Also, my friend is interested in being able to disconnect the 4-module strings on the roof from each other. I myself wouldn't bother. What might I say to convince him otherwise? I any case, I do need some sort of box on the roof to connect emt so I can bring the home runs down off the roof. I was also planning on ditching the mc4s and crimping/sealing to pv wire.
All help/suggestions much appreciates!
Helping a friend install panels to run into an eg4 6000. We have 16 420W commercial modules, and will do 4 strings of 4. 2 strings will combine on the roof, and each 8 module group will go into their own mppt on the eg4. The specs of the panels are as follows:
vmp 72.9
imp 5.77
voc 85.6
isc 6.2
The first thing I need is a set of breakers/disconnects and a box at the eg4 unit that is rated for over 342V and 15A. I've only ever used 150V midnite stuff before. Any suggestions? I know I don't need current interrupting capability rigorously, but the eg4 calls out for it. I think I've seen some breaker configurations that stack lower V breakers to bring the V rating up - does that make any sense?
Also, my friend is interested in being able to disconnect the 4-module strings on the roof from each other. I myself wouldn't bother. What might I say to convince him otherwise? I any case, I do need some sort of box on the roof to connect emt so I can bring the home runs down off the roof. I was also planning on ditching the mc4s and crimping/sealing to pv wire.
All help/suggestions much appreciates!