[RE-wrenches] CBI circuit breakers

[jay peltz]

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
> Allan at 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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