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  1. What is the difference between the SMA 2500 inverters?

    Asked 06/30/2011

    I am looking for a 2.5 kw inverter.

    Question – 1 comment

  2. What is the best substitute for Sharp 170W solar panel?

    Asked 06/29/2011

    I currently have a small installation of Sharp 170W panels.

    Question – 1 comment

  3. What are the options for a grid-tied array to continue to generate power in the event of a power outage?

    Asked 06/27/2011

      Hello, I'd like to get a better understanding of the ability of a grid-tied system to produce power when the g

    Question – 2 comments

  4. How do you calculate the efficiency of a solar panel?

    Asked 06/27/2011

    Solar Panel data sheets show both cell efficiency and module efficiency.   How do you calculate module efficiency?  Do you include the sol

    Question – 1 comment

  5. How much clearance is required when mounting a Sunny Boy 6000?

    Asked 06/24/2011

    I'm installing a Sunny Boy 6000 on a job, but have limited area to mount the inverter.  What is the required clearance?

    Question – 2 comments

  6. What is the wind resistance rating required by IEC 61215?

    Asked 06/24/2011

    I'm using a  Siliken SLK60P6L 230 Solar Panel  on a project in a coastal area prone to hurricanes.

    Question – 1 comment

  7. In what applications are Tyco Solklips best utilized?

    Asked 06/24/2011

    Hello, I'd like to get a better understanding of what applications are best served by using Tyco Solklips.

    Question

  8. What are the Deck Monitoring components I should specify for a commercial job using multiple SMA Sunny Boy inverters?

    Asked 06/23/2011

    We're developing a project that will use a mix of four SMA Sunny Boy inverters.

    Question – 1 comment

  9. What is the start voltage of the Steca Solsum 6.6f?

    Asked 06/23/2011

    I've looked through the  Steca Solsum 6.6F 6A Charge Controller 's data sheet and install manual, and I haven't been able

    Question – 1 comment

  10. Are the 1/2" strain relief bushings intended for a 7/8” hole?

    Asked 06/23/2011

    I am looking at 2 hole 1/2" hub strain relief bushings for #10 USE-2 wire.   The question is are they intended for a 7/8" hole o

    Question – 1 comment

  11. Can you sub out the 175A breaker in a MidNite Solar MNE175LT E-Panel?

    Asked 06/23/2011

    I recently purchased the  MidNite Solar MNE175LT E-Panel , but have since found that I only need 125A protection.

    Question – 1 comment

  12. How do you estimate the string sizing for the Xantrex XW MPPT 80-600 Charge Controller?

    Asked 06/22/2011

    I noticed that Xantrex has not yet published the string sizing tool for the Xantrex XW MPPT 80-600 .   What's a good way to estima

    Question – 2 comments

  13. What Combiner Box with AC Disconnect do you recommend for Enphase branch lines?

    Asked 06/22/2011

    What AC Combiner Box with AC Disconnect do you recommend for up to 12 incoming Enphase branch lines?

    Question – 1 comment

  14. Compatibility of Magnum Energy ME-ARC50 Remote Control

    Asked 06/22/2011

    If you are thinking of buying the  Magnum Energy ME-ARC50 Remote Control to use with your Magnum inverter, visit the Magnum Energy webs

    Question – 1 comment

  15. Why would my new Deka batteries be showing less than a full charge?

    Asked 06/21/2011

    I just installed a 3-panel system along with (2) Deka 12V 245Ah AGM batteries.  The system is working great.

    Question – 3 comments

  16. Can you use a solar inverter for a wind installation?

    Asked 06/20/2011

    Are there any solar inverters which can be used with wind turbines?

    Question – 2 comments

  17. What is the difference between the Enphase Envoy IEMU-02 and IEMU-03 gateways?

    Asked 06/20/2011

    I am buying a Enphase Envoy IEMU Communications Gateway and I need to know the difference between the IEMU -02 and the IEMU -03 versions? 

    Question – 1 comment

  18. Does the MidNite Solar MNPV6 Combiner Box come with a Ground Bus Bar?

    Asked 06/16/2011

    I am buying MidNite Solar MNPV6 Combiner 6 Input 20A 150/600V for combining 6 strings light commercial solar project.

    Question – 2 comments

  19. On the Apollo Solar Charge Controller, what are the steps to fix a high input Voltage Error?

    Asked 06/16/2011

    We have an Apollo Solar Turbo Charge Controller and when we applied the input voltage battery to the charge controller the display LCD sho

    Question – 3 comments

  20. Is there a solar PV field inspection check list?

    Asked 06/15/2011

    I'm looking forward to installing my first solar PV project, 5kW in California. Is there a checklist of the inspection?

    Question – 2 comments

  21. Does SMA Sunny Boy 10000TL-US operate on single phase 240V?

    Asked 06/15/2011

     I was wondering if the SMA10,000 is adjustable to single phase 240V?

    Question – 2 comments

  22. Can you buy custom cut trunk cables for Enphase M215?

    Asked 06/09/2011

    I was looking at your website, and it looks like I have to buy 30, 40, 240 connector options.

    Question – 1 comment

  23. Is an inverter/charger different than an offgrid inverter?

    Asked 06/09/2011

    Or is it just the names- a way of promoting? Does the inverter/charger act like a charge controller?

    Question – 1 comment

  24. How does the end cap for M190 look like?

    Asked 06/08/2011

    The end cap you have for sale look like a M190 not a 380. I am looking for three 190 end caps and 13 to 19 dollars too much.

    Question – 1 comment

  25. Why do the PV Source Circuits in a solar array require over current protection?

    Asked 06/03/2011

    If a solar array is an isolated source of power / current, why does it require over current protection?

    Question – 1 comment