need wiring info on k-120 panels, were to hook lugs up

System
System Posts: 2,511 admin
in Advanced Solar Electric Technical Forum #1
i have another post on here as i am have prolems with my PV system ?
i need to verify i have the wires connected to the right lugs on in the J box on the back of my PV
for a 2 panels system set up for 12volt ( parallel)
thanks
p.s. they are KC -120 watt panels year made 2001
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,687 admin
    #2
    Re: need wiring info on k-120 panels, were to hook lugs up

    Here is the Kyocera page where all of the discontinued spec sheets are:

    http://www.kyocerasolar.com/products/spec_module_discontinued.html

    I don't have a DXF reader (appears to be generated by AutoCad), but there is a k120 file in DXF format that may list the connections.

    http://www.kyocerasolar.com/dxf/70030449-1-A.dxf

    A test you might be able to find the diode connection... short one panel and take a volt meter and measure the terminal voltages (while in sun--does not have to be full-noon day sun)... If you have the diode protected output connected, it should read near zero volts, and the solar cells themselves should read somewhere between 0.2 and 1.0 volts above the shorted output voltages...

    If all of the connections read near zero, try shorting another one/set instead. You should not damage anything by performing these short circuit tests.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • crewzer
    crewzer Registered Users, Solar Expert Posts: 1,832 ✭✭✭✭
    #3
    Re: need wiring info on k-120 panels, were to hook lugs up

    Bill's got you going in the right direction. Check the Kyocera Installation manual for details on terminals in the junction boxes:

    http://www.kyocerasolar.com/pdf/specsheets/KC35-120Install.pdf

    HTH,
    Jim / crewzer
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  • System2
    System2 Posts: 6,290 admin
    #4
    Re: need wiring info on k-120 panels, were to hook lugs up

    it was a bad meter !
    got it now hooheee !
    thanks
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,687 admin
    #5
    Re: need wiring info on k-120 panels, were to hook lugs up

    Looks like Jim found you the correct manual for your panels... And glad to find it was a meter problem rather than some new math or physics principles. :-D

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • System2
    System2 Posts: 6,290 admin
    #6
    Re: need wiring info on k-120 panels, were to hook lugs up

    no kidding i was seeing things on the meter i knew could not be true , but with out another meter on hand i though maybe there was just something i was missing. its not like it was a cheap meter.. fluke brand, but it was old and who knows what happend to it in the past
    thanks for you help
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