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  1. What nuts and bolts do I need for the Prosolar channel nuts?

    Asked 12/03/2013

    Hi, We are changing out solar panels and need some replacement parts - 5/16" sliding inserts (channel nuts) which I can find onlin

    Question – 1 comment

  2. What type of inverter will I need for an 8kW string?

    Asked 11/27/2013

    1

    Question – 1 comment

  3. No measurements received from Panel

    Asked 11/21/2013

    "Optimizer shutdown, No measurements received from Panel".  Just got this message on my alerts.  How do I reset them?

    Question

  4. Micro Inverters or AC Modules? What's the difference?

    Asked 11/21/2013

    I'm starting a new project on my vacation house and just using micro inverters (1 x 20A circuit).

    Question – 2 comments

  5. What is the limit for PV I can install on my electrical panel?

    Asked 11/06/2013

    I need to put 3 circuits of 20A (Enphase) into my 200A distribution panel, but my installer is saying I can only put in 40A due to 690.64

    Question – 2 comments

  6. How do I choose the right marine batteries for cranking and for a 24 volt trolling motor

    Asked 10/27/2013

    I am using Interstate batteries at the present time.

    Question

  7. Do you have any current pricing comparison data regarding install cost of various residential racking systems

    Asked 10/23/2013

    interested in the material and install cost comparisons between Zep Solar, Unirac, and Schletter.

    Question

  8. Can the output on a Model 5000M inverter be turned down to produce less wattage?

    Asked 10/21/2013

    Question

  9. In mounting 16 panels in a 2 X 8 configuration, should I leave space between, or place them against each other (and add sealant)

    Asked 10/19/2013

    Also, what are the problems, if any, of powering a capacitor-start motor with a "modified sine-wave" (square-wave) inverter?

    Question

  10. What type of module and racking is best for a corrosive environment, like salty air for example?

    Asked 10/19/2013

    Question – 1 comment

  11. How can I ground my PV system in a coastal environment?

    Asked 10/19/2013

    Question

  12. Have you done any projects in Africa?

    Asked 10/15/2013

    Question

  13. Can 600V panels be used in 1000V strings?

    Asked 10/07/2013

    I've heard solar panels rated at 600V are effectively the same as panels rated at 1000V.  Can I confidently use 600V panels

    Question – 1 comment

  14. Maximum input voltage on a PS30 controller

    Asked 10/05/2013

    Does anybody know what or where to find the maximum input voltage on the Morningstar PS30 controller when connected to a 12v battery bank?

    Question

  15. Under what circumstances do I need a revenue grade monitoring system?

    Asked 10/04/2013

    Question

  16. How wide is the unirac Solarmount e mid clamp?

    Asked 10/02/2013

    What would the spacing between the modules be?

    Question

  17. Is it ok to use 1000V wire for a 600V system?

    Asked 09/19/2013

    We are designing a PV system using 600V modules and 600V inverter.

    Question – 1 comment

  18. Need help to see why the 8.7KW system is under performance

    Asked 09/16/2013

    We just installed one 8.7KW solar PV system. We used SMA 11000TL inverter as the customer wants to expand the size in the future.

    Question – 2 comments

  19. What Enphase microinverter will work with the Panasonic 240S?

    Asked 09/10/2013

    Question – 1 comment

  20. Will 3 controllers outputs wired in series charge a 60v scooter from a 24v 240w panel mounted on a small trailer.

    Asked 09/09/2013

    I want to find a way to make scooters go more distance at a fair cost.

    Question

  21. Difference between a Mechanically Attached and a Full Adhered roof?

    Asked 09/05/2013

    We are exploring our ballast racking options for a commercial project and trying to determine if we can avoid any penetrations for seismic

    Question – 1 comment

  22. Why are Stion CIGS modules free of Performance Induced Degradation?

    Asked 08/23/2013

    Traditional Crystalline Silicon solar modules suffer from Performance Induced Degradation (PID), but Stion CIGS modules are free of PID.

    Question – 2 comments

  23. Where can I find the seismic zone for my building in order to determine the best ballasted racking solution?

    Asked 08/21/2013

    I have a 120kW project in Northern California.

    Question – 1 comment

  24. Will an Outback FlexPower Two Output 240VAC at the combined inverter capacity?

    Asked 08/15/2013

    I'm interested in an Outback Flexpower Two FP2-10 prewired with a pair of VFX3648's.

    Question – 2 comments

  25. Is my Trace 4024 inverter compatible to stack and connect to a new Xantrex 4024 inverter?

    Asked 08/13/2013

    Question