Tech Help

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  1. PG&E installed a smartmeter. they suggested that i check my systems inverter to ensure it turned back on

    Asked 22 hours ago

    I'm not sure solar panel inverter turned back on after PG&E shut off power there's words like sync ac and state 104 in the m

    Question

  2. Can I mix panel manufacturers, Canadian w/ REC scm 225?

    Asked 5 days ago

    Can I mix panel manufacturers, Canadian w/ REC scm 225? discussion,solar installation discussion,solar forum

    Question

  3. Connecting more wattage than recommended on Phocos MPPT Controller...

    Asked 5 days ago

    I have a Phocos 30A 24V Mppt controller. The max PVwatt recommended is 900W . However I have 4 x 250watts panels.

    Question

  4. Auto switch from panels to grid

    Asked 05/05/2013

    I would like to power one circuit in the house (110 vac) with panels inverted to AC (no batteries) during daylight hours.

    Question – 1 comment

  5. What keeps the voltage from backfeeding to the grid during a power outage?

    Asked 05/02/2013

    We are an electrical coop located in South West Texas and a member has installed a model 5000US solar inverter fed by 21 panels, what keeps

    Question – 1 comment

  6. Windy Boy to Sunny Boy - converting back

    Asked 04/26/2013

    We have a WB US7000 that we would like to use as a Sunny Boy.

    Question – 1 comment

  7. Steca PR2020 controller (with SW235 solar panel) does not recognize night time. All other functions working fine. Any ideas?

    Asked 04/23/2013

    I know these need a few day/night cycles to learn from watching the voltage of the module when day and night are present but after 5 days

    Question

  8. I have a motorhome with a Steca control panel showing EO6 fault, any ideas?

    Asked 04/18/2013

    Question

  9. AGM Battery Voltage

    Asked 04/17/2013

    Hi, I am in the Panama Canal Zone and have bought here a new Deka AGM battery.

    Question

  10. I want a nominal 48-volt inverter to produce a nominal 110 &/or 220 VAC output,1000-watts or less. Any suggestions?

    Asked 04/12/2013

    My goal/purpose is to use portable 48V e-bike battery packs as a reservoir and as portable 48V e-bike battery packs.

    Question

  11. I bought the Sunny Boy USB-PBS PC Service Cable but am having issues. Is it 32 or 64bit?

    Asked 04/09/2013

    http://www.civicsolar.com/product/sunny-boy-usb-pbs-pc-service-cable

    Question – 1 comment

  12. When there is a connector mismatch with the Enphase M215 (MC4/Tyco) and an intermediate connector is needed, which one do I use?

    Asked 04/09/2013

    Question – 1 comment

  13. When purchasing a Soladeck Roof Mount Combiner/Enclosure, what are all of the associated parts that should be ordered with it?

    Asked 04/09/2013

    Question

  14. What do you need for a residential off-grid system that can support a 208V pump?

    Asked 04/08/2013

    Howdy,    I want to take my home off-grid.    I have split-phase 120/240V power, but I have a 1 HP 208V pump I use for my swim

    Question – 1 comment

  15. Charge Controller, 24 volt panels to 12 volt batteries

    Asked 04/07/2013

    I am looking for a charge controller that I can wire in up to 500 watts of 24 volt panels to charge 12 volt batteries.  What would you rec

    Question – 1 comment

  16. What does LID and CTM stand for?

    Asked 04/01/2013

    Can you tell me what LID and CTM stand for?  Are there particular installations or situations would this be most important to consider?

    Question

  17. Powder coated vs stainless steel battery box

    Asked 03/22/2013

    In a salt water area where corrosion is an issue, is there any significant benefit of choosing a stainless steel battery box over one that

    Question – 2 comments

  18. I have (8) 300w solar panels. How do I size the micro inverters and the power pure sine inverter?

    Asked 03/21/2013

    I want to tie the system into my house power and reduce my bill.  I also want to use the array as a back up when the grid is down (often i

    Question – 4 comments

  19. Can a 600VDC fuse be used to protect an inverter from excess voltage input?

    Asked 03/18/2013

    At 10 degrees F the input voltage for the inverter I want to use will become too great, or over 600V.

    Question – 1 comment

  20. What type and size inverter do I need to run my deep well water pump? It states that it is 12 amps.

    Asked 03/14/2013

    Question – 2 comments

  21. For an Enphase pole mount system (1kw), what is the maximum distance the pole can be from the house?

    Asked 03/13/2013

    I'm putting together a 1kw Enphase pole mount system, and I'm trying to see how far I can site the system away from the main pan

    Question – 2 comments

  22. How can you tell if a PV module frame is energized before you touch it, what precautions should be taken?

    Asked 03/09/2013

    Question

  23. SMA Sunny Island - what does the 6.7kW input mean?

    Asked 03/07/2013

    Hello - I'm trying to understand the specs on the SMA Sunny Island 4548.

    Question – 4 comments

  24. AC coupled system: sizing PV inverter vs battery inverter. why the 90% ratio?

    Asked 03/07/2013

    I'm looking to add a battery backup to an existing PV system.

    Question – 1 comment

  25. Are there any recommended solar panel cleaning products?

    Asked 03/07/2013

    Hello, Is it worth it to use any of the commercially available cleaning products specifically designed for cleaning solar panels or wou

    Question – 1 comment