HI Allan,
they are designed to use a POZI drive bit I believe, which is
slightly different than a phillips but works much better.
I also use my large straight tip on my 8 in 1 screw driver.
jay
peltz power
On Jul 27, 2009, at 9:56 PM, Allan Sindelar wrote:
Kent,
No, this hasn’t happened to me yet.
My biggest issue with CBI breakers is finding the correct bit/tip to
get good torque. I’m not sure what it is, and would appreciate
hearing what works best – it’s something like a size 2½ Phillips
crossed with a Whitworth square drive, or something (neither of
those actually exist).
Allan Sindelar
al...@positiveenergysolar.com
NABCEP Certified Photovoltaic Installer
EE98J Journeyman Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com
Allan,
I've had trouble with breakers opening when they shouldn't. On an
array of two strings of Mitsubishi 175s (Isc = 7.9A) I had two 15-A
breakers open. Last week, I had a low-power call from a customer
with three strings of Evergreen 190s (Isc = 7.1A); one 15-A breaker
in the combiner was open. Most of my installs are around 3000 ft
elevation, so the irradiance is possibly a little higher than
normal, but not by enough that it should be an issue for 15-amp
breakers. If this is a wide-spread problem, I'd expect others on
this list to have noticed.
As others have mentioned, it is important to take precautions to
make sure that stranded wires are well tightened in these breakers.
I tighten, wiggle, re-tighten, and then check again later. On
systems where I've had breakers open, loose connections haven't been
the issue.
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemoutainsolar.com
Can you be more specific as to what
problems you have had?
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