Tech Help

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  1. Can I use 250A DC disconnect with Xantrex XW6048?

    Asked 04/27/2011

    I have a trace 250 amp dc disconnect and i would like to use it with a xw6048 that you sell, is there any reason why i cant?

    Question – 1 comment

  2. Which charge controller should I choose?

    Asked 04/27/2011

    Would like some input regarding proper charge control selection for stand alone and grid tie systems.

    Question – 4 comments

  3. How does the Enphase D380 know the difference between going single- or three-phase?

    Asked 04/26/2011

    How does the Enphase D380 know the difference between going single- or three-phase?

    Question – 1 comment

  4. Should I wire my off-grid system for 24V or 48V?

    Asked 04/22/2011

    I am building a small (2kW) off-grid system with a  Outback FLEXPower One FP1-4 w/ GVFX3648 inverter and ET Solar panels.

    Question – 1 comment

  5. What is the difference between mill finish and clear anodized rail?

    Asked 04/20/2011

    Is there any application difference? Do you recommend using mill finish flashing or rails in an application in California?

    Question – 1 comment

  6. What is the weight per square foot that the RapidRac?

    Asked 04/20/2011

    I'm looking for the Unirac RapidRac specification. What is the maximum load that Rapidrac will support?

    Question – 3 comments

  7. Is this a suitable junction box to use with my Enphase installation?

    Asked 04/20/2011

    I am hooking four 240W panels using an Enphase interconnect cable and then planning on this box then 10-3 running to service panel?

    Question – 3 comments

  8. Could you help me with wiring Enphase Interconnect cable?

    Asked 04/20/2011

    Okay, I need reassurance..

    Question – 4 comments

  9. What is included with the UniSolar PVL-136 Thin Film Panels?

    Asked 04/18/2011

    What is included with the UniSolar PVL-136 solar panels?

    Question – 1 comment

  10. Is an AC lightning arrestor essential for a PV system?

    Asked 04/17/2011

    I have an off grid system, I have DC lightning arrestors, but I read somewhere that I should have an AC surge arrestor and an AC surge cap

    Question – 1 comment

  11. Do I lose production from both modules if the D380 fails?

    Asked 04/15/2011

    If the Enphase Energy D380 inverter fails, am I losing the energy from both modules?

    Question – 1 comment

  12. Does Enphase Energy D380 inverter work with only one module?

    Asked 04/15/2011

    Can I connect only 1 panel to an Enphase D380 and not connect the 2nd panel without impacting the performance of the unit?

    Question – 1 comment

  13. Do the Trina Solar panels have MC4 or Tyco connectors?

    Asked 04/15/2011

    Can you please let me know what type of connectors come on the Trina solar panels ?  Does it vary depending on the panel size/model?

    Question – 1 comment

  14. Does higher Torque Value on installation damage PV module?

    Asked 04/15/2011

    I am installing ET Solar panels ( ET-P660230B ) on Unirac HD rails using top-mounted clamps.  The ET installation manual recommends the

    Question – 1 comment

  15. What is the difference between a standard and high frequency inverter?

    Asked 04/14/2011

    Specifically, the SMA Sunny Boy 3000US Inverter vs. SMA Sunny Boy 3000 HF US Inverter (the latter is slightly more expensive).

    Question – 1 comment

  16. What is passive solar tracking?

    Asked 04/14/2011

    Could you explain me the details of 'passive' solar tracking? Is there a significant reduction in efficiency?

    Question – 1 comment

  17. Can you recommend a single axis tracker for my project?

    Asked 04/14/2011

    What are the benefits of single axis tracker? I'm building a 3 kW solar system on my back yard. Thank you.

    Question – 1 comment

  18. Have you seen the DynoRaxx system?

    Asked 04/13/2011

    I visited the DynoRaxx booth at PV America. They said it was their debut to the public.

    Question – 5 comments

  19. What is galvanic separation?

    Asked 04/12/2011

    I am reading in the SMA TL installation manual that the transformerless inverters don't have galvanic seperation. What does it mean?

    Question – 1 comment

  20. Which Fronius monitoring option should I use for three IG inverters?

    Asked 04/11/2011

    I'm trying to figure out which Fronius monitoring option I should be purchasing. Since there are lots of products I am confused.

    Question – 3 comments

  21. What is the panel mounting hole range of Ironridge UNI-SP/01XH?

    Asked 04/11/2011

    The installation manual and the drawings of the Ironridge Side of Pole  UNI-SP/01XH doesn't state the maximum and minimum hole dis

    Question – 1 comment

  22. What size pole should I use for Ironridge Top of Pole mount?

    Asked 04/11/2011

    The installation manual doesn't really mention. 2.0" or 3.0" diameter pole? Can I use other sizes?

    Question – 1 comment

  23. What size pole should I use for Ironridge Side of Pole mount?

    Asked 04/11/2011

    Is 3.0" diameter pole only available size for the ironridge side of pole mount?

    Question – 1 comment

  24. Can I use Magnum MM612AE Modified Sine Wave inverter for my laptop?

    Asked 04/08/2011

    Do laptops and cell phone chargers require pure sine wave or is the Magnum MM612 AE inverter/charger good for my application?

    Question – 1 comment

  25. When can you use a transformerless inverter on a solar installation?

    Asked 04/06/2011

    SMA released the transformerless Sunny Boy 8000TL, 9000TL and the 10000TL inverters.   I think that Fronius and Power-one both also have a

    Question – 1 comment