My hesitation to that is the compressibility of the neoprene. One of the things I like about nylon or similar hard plastics is they don’t compress so you do get a ridged structure.
jay peltz power > On Jan 28, 2016, at 10:15 AM, Ray Walters <[email protected]> wrote: > > I would use a SS washer with integrated Neoprene rubber gasket. We use them > on roof work, and Unirac uses them under the lag on their roof flashings. > <images.jpeg> > https://www.copperstate.com/shop/429/neoprene-washers > <https://www.copperstate.com/shop/429/neoprene-washers> > > Thanks, > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer > 303 505-8760 > On 1/28/2016 8:25 AM, Jay wrote: >> Hi Larry >> >> I wasn't planning on installing anything between al and al. Just between SS >> and al. So the module will still be bolted directly to the al rack material. >> I'm not too worried about the grounding, and certainly not worried enough to >> install lay in lugs with copper to each module. >> >> As lones pointed out, there are parts that would insulate the bolt. >> But as the owner hasn't requested that, not going to suggest it! >> >> I sure didn't plan on stirring the pot like this. >> Just really wanted some help on sourcing the washers >> >> Thanks >> >> Jay >> Peltz power >> >> On Jan 28, 2016, at 6:49 AM, Starlight Solar Power Systems < >> <mailto:[email protected]>[email protected] >> <mailto:[email protected]>> wrote: >> >>> Hey Jay, >>> >>> I’m still trying to picture this and had a thought: If you isolate the >>> module from the rack electrically with these washers, and both are >>> grounded, and the two grounds are not at the same potential (different >>> length ground runs), you may be creating a path for high voltage into the >>> array in event of a near lightning strike. >>> >>> Also, if the washer is between the two metals, how will you isolate the >>> bolt that puts them together from not touching the sides of the holes? >>> Perhaps you need to look into non-conductive fasteners as well. >>> >>> Larry Crutcher >>> Starlight Solar Power Systems >>> >>> >
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