Allan:
I am not sold on the CBI din breakers. For higher amperages, they seem too
fragile to hold larger gauge wires. I have had internal failures as
well. Also, the CBI breakers will open if you barely brush your hand
against them.
The narrower QOU handles on the 2 pole breakers are very handy for our
custom interlock brackets. Overall, I think a QOU is much more rugged than
a CBI.
Neither option negates the need for hand wiring feeds to the individual
breakers...
William
At 12:56 PM 10/23/2009, you wrote:
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William,
The first time I saw a prototype of the XW system I groaned at the use of
QOU breakers. Partly it was for the reason you mention, and partly because
the QOU had become a white elephant, not used in our industry since the
demise of the APT/Trace Powercenters. QOUs aren't normally stocked at our
local SqD distributor, so we would have to carry yet another stock of
breakers, besides OBDC and the CBI lines. My comments to the Xantrex
techies didn't make any difference, either.
Allan Sindelar
<mailto:[email protected]>[email protected]
NABCEP Certified Photovoltaic Installer
EE98J Journeyman Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
<http://www.positiveenergysolar.com/>www.PositiveEnergySolar.com
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