1. Solar PV Updates PDE Summit, December 2009
Good Morning. It sure is good to be here today!

2. JCI 5kW PV Kits Updated PV Kit Consists of:
(24) SolarWorld 230-watt PV modules (5.52 kW total DC rating)
SMA 5000-watt inverter
One of three racking options: Tilt-up Ground/Roof, Ballasted roof mount, Flush-mount for pitched roof
More small parts to make a more complete PV system
Electrical drawing, physical layout drawing, warranty info., installation manuals

3. JCI 5kW PV Kits Updated PV Kit Ordering:
Order the modules direct from SolarWorld, contact is Cindy Vernon,
Order the rest of the kit from AEE Solar, full-service renewable energy equipment distributor, contact Michael Brennan,
See the “ReadMe” file and more on the Renewables eRoom under “Solar PV”  “JCI 5kW PV Kits new”

4. SolarWorld SW230
230 watts DC
Monocrystalline
Made in OR, CA, USA

5. SMA SB5000US Inverter 5000 watts AC
Can operate at 208, 240, or 277 Vac
Built-in DC combining/fusing
Built-in DC/AC disconnect
World leader in small PV inverters, from Germany

6. Direct Power and Water (DPW) Tilt-up Rack
Adjustable Tilt Angle,
20 – 65 deg.
Telescoping rear legs
Suitable for Roof/Ground Mount
L-feet at bottom

7. Direct Power and Water (DPW) Ballasted Rack
Tilt Angles available from
0 – 35 degrees
Need P.E. to calculate amount of ballast for site
Padded stainless steel pan at bottom

8. Unirac Flush-Mount Rack, “Post and Rail”
Module Mid Clamp
Module End Clamp
Rail
Module Grounding Clip
Grounding Lug
Posts
L-Foot
Flashing

9. Unirac Flush-Mount Rack, “Post and Rail”
umm… OSHA fall protection, anyone?

12. PV Array Wiring
Insulated Multitap Connectors in J-box

13. PV Array Wiring
Weathertight
Strain Relief
Connectors, bottom of J-box

14. PV Array Wiring
Module wiring: Two leads w/connectors come on each module. They connect together to make a series string. Module cables dressed to racking or to module frames.

15. PV Array Wiring
Can use pre-made module wiring “whips” or make your own using crimp-on connectors. Crimp-on method is less expensive if you’re doing a big job.

16. PV Array Wiring

17. PV Array Wiring Module Grounding:
Lay-in lugs (tinned copper, e.g. Ilsco GBL-4DBT)
Wiley WEEBs (they are ETL-listed for the purpose)
WEEBs are inexpensive and easy to use but you’ll still need some regular grounding lugs to ground the rack
Must get permission of the electrical inspector if using WEEBs

18. DC Combining/Fusing Box – not part of the Kit
+ Fuse Holders
Combined + Output
- Combining Block
Combined - Output

19. …because it’s built into the SMA inverter

20. …because it’s built into the SMA inverter
When AC/DC disconnect is shut off, inverter is “dead”, can be unwired/removed

21. Lightning Arrestors
Usually both DC and AC lightning arrestors are installed to protect the inverter.
Can be installed in the inverter, in a J-box, or in a safety switch (disconnect).
LA 302-R
AC side
LA 602-DC
DC side

22. AC Disconnect, usually required by Utility

23. PV Kit Parts Lists on eRoom

24. PV Kit Parts Lists on eRoom

25. AEE Solar Catalog on eRoom

26. AEE Solar Price List on eRoom

27. “Solar PV” folder on eRoom

28. “JCI 5kW PV Kits new” folder on eRoom

29. Ground/Roof System Sizing Tool available on Renewables eRoom

30. PV Small System Design Small System Design
Small systems, up to 50 kW, can assume SolarWorld 230 mono modules, SMA or Fronius or PVPowered (made in US, but 240Vac only) inverters
Can use multiple inverters to make your system size
SMA String Sizing program – note that you can’t spec an arbitrary system size, it needs to make sense in terms of module strings
Each inverter manufacturer has their own string sizing program

31. PV String Sizing
SMA String Sizing program: Google  SMA String Sizing

32. PV String Sizing

33. PV Small System Design
Three Single-Phase inverters plus a 3-phase Load Center (breaker panel) equals a 3-phase inverter.
3-phase power
Inverter 1
Circuit
Breakers
Inverter 2
Inverter 3
3-phase Load Center

34. SolarWorld 175-watt modules SMA 5000-watt inverter
Which of the following come standard in the JCI 5.5 kW PV Kit? (choose one best answer)
SolarWorld 175-watt modules
SMA 5000-watt inverter
SolarWorld 230-watt modules
1. and 2. above
2. and 3. above

35. The SMA SB5000US PV inverter comes standard with: (choose one best answer)
Lightning Arrestors
Module Wiring
DC Combining/Fusing section
Utility-Accessible AC Disconnect
Datalogging

36. The best place to get information about the JCI 5.5 kW PV Kit is:
The Renewables eRoom
The street corner, just like in the old days

37. The largest number of PV modules you can put in one series string depends on: (choose one best answer)
The PV module used + the average high temperature at the site
The wire size used for module wiring + the PV module used
The PV module used + the record low temperature at the site
The space available on the roof + the PV module used

38. The smallest number of PV modules you can put in one series string depends on: (choose one best answer)
The PV module used + the average low temperature at the site
The lowest voltage where the inverter can operate
The PV module used + the average high temperature at the site
1. and 2. above
2. and 3. above