energyhunter
New Member
- Joined
- Feb 20, 2022
- Messages
- 83
Summary: DIY first system running about one year, thanks to SS and Will Prowse: Upgraded two EG4 6500s, FROM 120v CL panel TO 240v split phase for ALL loads, utility only for back up; equivalent of SBU. Never selling power back to grid, so I chose two 6000XPs (purchased) instead of a single 18K. I will build a ground array with bifacial panels 395k ea or up to 470k ea if bifacial kicks in fully. (Unless y'all have a better idea.) East Tennessee sunshine is about 5.3 and average for panels tilt is 30 degrees.
Question (1) Wouldn't the two PowerPros (about 28K of storage) be adequate for this system? (EG4 has the firmware to adapt it), versus spending $2,000 more for the rack mounted six EG4LL-S (about 30K of storage)? The two PowerPros will be properly mounted outside the shed wall and the two 6000XPs will be inside that shed with the year round 9k mini split.
Question (2) Is 4 Gauge wire sufficient?
Distance from MAIN to new whole house panel in workshop/shed is about 75 ft. I purchased 85 ft of 4/3 copper NM cable for that run through schedule 80 electrical PVC mounted in the crawl space underneath the floor joists; runs about 70 ft plus 10 ft is buried one ft deep between house and workshop. House is 1500 sq ft w/average 120/240 circuits, includes 3 ton heat and A/C and workshop is 16 x 24 (384 sq ft) to have mostly 15a and 20a circuits. Very short distance to array so 10 gauge PV wire should be okay....
I'm sure I made some embarrassing errors here so am open to ALL suggestions and yes, I will have an electrician check my work. Safety is so important to me and I will try to adapt to the NEC for that reason; This is an unincorporated area, county only. Still not sure about a transfer switch.
Question (1) Wouldn't the two PowerPros (about 28K of storage) be adequate for this system? (EG4 has the firmware to adapt it), versus spending $2,000 more for the rack mounted six EG4LL-S (about 30K of storage)? The two PowerPros will be properly mounted outside the shed wall and the two 6000XPs will be inside that shed with the year round 9k mini split.
Question (2) Is 4 Gauge wire sufficient?
Distance from MAIN to new whole house panel in workshop/shed is about 75 ft. I purchased 85 ft of 4/3 copper NM cable for that run through schedule 80 electrical PVC mounted in the crawl space underneath the floor joists; runs about 70 ft plus 10 ft is buried one ft deep between house and workshop. House is 1500 sq ft w/average 120/240 circuits, includes 3 ton heat and A/C and workshop is 16 x 24 (384 sq ft) to have mostly 15a and 20a circuits. Very short distance to array so 10 gauge PV wire should be okay....
I'm sure I made some embarrassing errors here so am open to ALL suggestions and yes, I will have an electrician check my work. Safety is so important to me and I will try to adapt to the NEC for that reason; This is an unincorporated area, county only. Still not sure about a transfer switch.