Wrenches I was just about to order a pallet of Yingli 255 modules and noticed the spec sheet calls out Amphenol H3 connectors. I looked at the spare 230W module in the shop from a July install and, just as I remembered, it had MC connectors. So I looked at the latest 230W module spec sheet and it too had been changed to Amphenol. All Yingly mods apparently now come only with PV wire & Amphenolconnectors. I know the article in the recent Photon comparison of connectors pointed out that though many different brands would interchange, snap together and hold fast, that they should not be trusted to create a low impedance connection nor be watertight just because they fit. The article went on to say that connector mfgrs have resisted creating a standard for their industry. I can't say that I blame them but it sure gives us another potential glitch to avoid. Just a note, at SPI I came across a display of crimpers for different brands of PV lead connectors. There were well over a dozen different varieties of expensive looking hand tools on display. While I didn't look closely at them all I could easily see that Tyco & MC were clearly different and probably not interchangable. Others looked similar but a difference of only a few thousandths of an inch can spoil your day when discovering that A doesn't fit into B like it should. Something else to be pissed at the PV industry about.
Jim Duncan North Texas Renewable Energy NABCEP Certified Solar PV Installer No.031310-57 TECL 27398 nt...@1scom.net 817.917.0527 www.ntrei.com
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