[RE-wrenches] MC & Amphenol

[North Texas Renewable Energy Inc]

  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
  ntrei at 1scom.net
  817.917.0527
  www.ntrei.com


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