Tech Help

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Found 342 results

  1. Can I use a standard RS 485 card with an SMA 2000HF inverter?

    Asked 3 days ago

    Hello, I have a solar installation with an SMA 2000HF inverter and would like to use the Sunny Webbox monitoring system.

    Question – 1 comment

  2. Can I replace my 6 Trojan 6 volt 105 batteries with 3 Deka 12 volt Gel batteries for my golf cart?

    Asked 5 days ago

    I have an EZ-Go golf cart and heard you can replace the 6 Trojan 6 volt 105 batteries with 3 Deka 12 volt Gel batteries. I am wondering if

    Question – 1 comment

  3. Looking to replace a Uni-Solar Battery Charger, Model MBC-262, made by United Solar Systems Corp.

    Asked 6 days ago

    Good Morning, I gather the UniSolar company in your vendor list is not the same company that produced this panel.  It was installed on

    Question

  4. Which charge controller do you use with a UniSolar e-PVL Solar Panel?

    Asked 01/27/2012

    I want to use the UniSolar e-PVL-144 Amorphous PowerBond Solar Panels on my off-grid solar project but I am not sure which charge controll

    Question

  5. What is the approximate weight per linear foot for Unirac and IronRidge Rails?

    Asked 01/19/2012

    I am trying to compare solar racking options and I am considering Unirac and IronRidge.

    Question – 1 comment

  6. Do Canadian Solar and ET Solar panels have bypass diodes - like the Solar World panels?

    Asked 01/12/2012

    Hello, Do Canadian Solar and ET Solar panels have bypass diodes - like the Solar World panels?  Are panels without these diodes cheaper

    Question – 2 comments

  7. I have some deka 12gvr-75 gel batteries. Can I use them in a solar system?

    Asked 01/10/2012

    Question – 1 comment

  8. What is the best deep cycle batteries to buy for solar applications?

    Asked 01/06/2012

    Question – 1 comment

  9. Effect of shading from the mountain?

    Asked 01/05/2012

    I have been planning a small, solar system for my home primarily to run my well pump.

    Question – 1 comment

  10. What is the most advanced solar panel today on the market?

    Asked 01/04/2012

    Question – 1 comment

  11. Need switching device controlled by insolation and time of day. Does it exist?

    Asked 12/22/2011

    I'd like to control a 40 to 70 amp switch to recharge an electric powered automobile.  My goal is that my PV array will provide the p

    Question – 4 comments

  12. Do your products accommodate uplifts for wind loads of 147mph?

    Asked 12/15/2011

    We are a government agency trying to promote PV installations in So.

    Question – 1 comment

  13. Am I using the right charge controller for my system?

    Asked 12/14/2011

    I have a Sun Saver solar charge controller SS-6L 12V 6A, match with a 80 W panel, and a deep cell battery 77amp.I have 2 questions: Is

    Question – 2 comments

  14. What inverter is appropriate for a 10kW high-leg delta solar application?

    Asked 12/14/2011

    Hello, I'm working on a 9.2kW project with a MecaSolar tracker.

    Question – 4 comments

  15. Does the amount of sunshine affect the type of batteries I need?

    Asked 12/13/2011

    I don't get a lot of sunshine.  I need a diesel generator.  Does this affect the type of batteries I need?

    Question – 2 comments

  16. How do you measure if a solar panel is functional before you mount it on the roof?

    Asked 12/13/2011

    A spike of power hit the building where we completed an installation.  The system did not have proper surge protection.  The inverters wer

    Question – 3 comments

  17. How are my solar panels tied to the grid?

    Asked 12/13/2011

    I have 8 Schott Solar panels that were put on with a government grant.  I didn't get to have any involvement in it at all and I don&#

    Question – 1 comment

  18. I have a Fronius inverter. Can I add an Enphase system to another available 2-pole breaker without causing problems?

    Asked 12/06/2011

    If grid power isn't available, my Fronius shuts down.  Does the Enphase shut down as well?  If so, I don't see any conflicts if

    Question – 1 comment

  19. Can you revise a CSI rebate reservation to a larger system capacity?

    Asked 12/05/2011

    Hello, I had original CSI reservation that was based on 27 of the ET660230B panels for 5.350 kW in CSI rating.

    Question – 2 comments

  20. Can you give me the comparison between the Kyocera 240 watt/ uniden micro inverter and the AUO 240 with built in micro inverter?

    Asked 11/28/2011

    in other words which panel has the better power output. Does the difference in cost justify the extra cost of the AUO given the proven rel

    Question – 1 comment

  21. Can solar panels be used as windows?

    Asked 11/22/2011

    just curious.

    Question – 1 comment

  22. Do I need to specify WEEB-UMC for Unirac rails and clamps?

    Asked 11/18/2011

    Question – 1 comment

  23. How many watts is the Solyndra SL-50-10 cylindirical module?

    Asked 11/18/2011

    Question – 2 comments

  24. Why the neutral current is zero in WYE configuration in balanced load while it is unbalanced?

    Asked 11/16/2011

    Why the neutral current is zero in WYE configuration in balanced load while it gives some value of current in unbalanced load?

    Question – 2 comments

  25. Is there a means of providing a DC disconnect for multiple strings without combining them?

    Asked 11/14/2011

    Hello, I have an installation with two series strings.

    Question – 1 comment