New 6.4 KW -->Aug 2011 + photos

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Gitchee Gumee Kid
Gitchee Gumee Kid Registered Users Posts: 19 ✭
in Solar Beginners Corner #1
Xantrex XW6048-120/240=60 Hybrid Inverter
Xantrex XW-MPPT60-150 Charge Controller
Kyocera KD215GX-LPU (30 panels ---> 15/array )

http://s994.photobucket.com/albums/af61/GitcheGumeeKid/Solar%20Renewable%20Energy%20Project%20%20%20%20%20July%2020110/

GGK

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  • rollandelliott
    rollandelliott Solar Expert Posts: 834 ✭✭
    #2
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    Re: New 6.4 KW -->Aug 2011 + photos

    the rebar welding and cement work was pretty impressive did you do that yourself? What do you need to weld rebar like that? will one of those lincoln $500 welders at home depot work?
    I didn't see it in the photos but I'm guessing the bottom of the dirt hole is filled with concrete about a foot deept to incase the rebar?

    Thanks for sharing.!
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  • Frxddy
    Frxddy Solar Expert Posts: 113 ✭✭✭✭
    #3
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    Re: New 6.4 KW -->Aug 2011 + photos

    Congrats on the good looking system! I hope wind load isn't an issue in your area. That's a lot of panel at that height. My gut says it's plenty strong, but I wonder how much wobble it'll incur at high wind loads. I'll bet in an 80 MPH wind it will deflect the top of the pole 6 or 8 inches. I've always wondered what a space between each panel would do. Going by math alone, the wind load is the same, but wouldn't allowing some wind to go between panels make less of a load?
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  • Seven
    Seven Solar Expert Posts: 292 ✭✭
    #4
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    Re: New 6.4 KW -->Aug 2011 + photos

    Awesome install!

    Are you going over the max for your CC by running 5 of those panels in series? Iirc the Voc is over 30v for those panels and 5 would put you at 150v.
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  • Gitchee Gumee Kid
    Gitchee Gumee Kid Registered Users Posts: 19 ✭
    #5
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    Re: New 6.4 KW -->Aug 2011 + photos
    rollandelliott wrote: »
    the rebar welding and cement work was pretty impressive did you do that yourself? What do you need to weld rebar like that? will one of those lincoln $500 welders at home depot work?
    I didn't see it in the photos but I'm guessing the bottom of the dirt hole is filled with concrete about a foot deept to incase the rebar?

    Thanks for sharing.!

    <================0=======================>
    rollanddelliott,
    The entire project is done by a local firm specializing in RE systems.
    The excavating rebar fabrication + welding and cement work were all sub-contracted by them.
    It was impressive welding! I agree. Wish I could do as well.
    I'll pass on giving you an opinion on a Lincoln welder.
    Yes on the last question about the concrete base (at least a foot thick )

    GGK l
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  • Gitchee Gumee Kid
    Gitchee Gumee Kid Registered Users Posts: 19 ✭
    #6
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    Re: New 6.4 KW -->Aug 2011 + photos
    Seven wrote: »
    Awesome install!

    Are you going over the max for your CC by running 5 of those panels in series? Iirc the Voc is over 30v for those panels and 5 would put you at 150v.
    <=================0=======================>

    7,
    Just looked at the display panel. 5.3 KW's being generated (sunny,clear sky )and the CC says 51.4v on #1 CC and 51.3v on # 2 CC.

    GGK
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  • Gitchee Gumee Kid
    Gitchee Gumee Kid Registered Users Posts: 19 ✭
    #7
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    Re: New 6.4 KW -->Aug 2011 + photos
    Frxddy wrote: »
    Congrats on the good looking system! I hope wind load isn't an issue in your area. That's a lot of panel at that height. My gut says it's plenty strong, but I wonder how much wobble it'll incur at high wind loads. I'll bet in an 80 MPH wind it will deflect the top of the pole 6 or 8 inches. I've always wondered what a space between each panel would do. Going by math alone, the wind load is the same, but wouldn't allowing some wind to go between panels make less of a load?
    <==================0======================>
    Frxddy,

    Thank you for the congrats.
    I too fret sometimes about wind loads.
    The footings were "supposedly designed by a structural engineer. They said that they guarantee it. "They will stand behind it" But will they stand under it? lol

    GGK


    ROUGH SKETCH

    It was a so called monolithic pour.








    Arraypierfoundationsketch.jpg
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #8
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    Re: New 6.4 KW -->Aug 2011 + photos

    Man, I am not sure I trust your structural engineer. I have 1/3 of my pole encased in 24" concrete and rebar. And I still don't trust the pole. 3Kw array on the pole too. Wind leverage on those 4 bolts/all-thread will be fantastic. I hope it holds. The wide base underground should help anchor the beast in, but I used sch 80 8" pipe, and it feels iffy.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister ,

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