Maybe this should be on the NABCEP test. R. Walters
On Sep 13, 2010, at 8:04 PM, benn kilburn wrote: > Hopefully any crew installing PV, and familiar with this debate (which they > should be) can easily distinguish between the GBL-4 and the GBL-4DBT. The > weight difference is quite noticeable. If it feels light for its size, it's > aluminum, dont use it!!! If it has some distinct weight to it, then it's > most likely the copper DBT, giv'er! > > > On Sep 12, 2010, at 5:41 PM, Jamie Johnson wrote: > That looks like a tin plated aluminum lug (aluminum corrosion) with a plated > steel screw (rusted screw)....... > > Here is an explanation of the differences between both ILSCO GBL 4 lugs from > John Wiles Code Corner in Homepower issue 102 > > "The Ilsco GBL-4DBT is a lay-in lug > made of solid copper, which is then tin-plated. It has a > stainless steel screw to hold the wire. The lug accepts a #14 > (2 mm2) to #4 (21 mm2) copper conductor. It is listed for > direct burial (DB) and outdoor use and can be attached to > aluminum structures (the tin plate). The much cheaper Ilsco > GBL-4 lug looks identical, but is tin-plated aluminum, has > a plated screw, and is not listed for outdoor use." > >
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