QO Breakers and Panels [RE-wrenches]

[Bill Brooks]

William,

I couldn't agree more about array combiners. I was the one screaming for
these things for years and the manufacturers just blew me off. The TCB-10 is
definitely not the answer to the dilemma. It is horribly under-built in the
fuse holders and some large system suppliers are beginning to remove them
from their system designs.

My comment was based on the class of equipment that is available.
Unfortunately, the custom designed equipment, like combiners, are not all
that great. Trace also has their five circuit combiner board and Advanced
Energy has their six circuit board. These are okay, but I have seen problems
with terminals loosening on them.

We need a more robust combiner for only slightly more money.

Switches, circuit breakers, and fuses are readily available for 125 Volts
DC, but we are at the manufacturer's mercy on combiners.

Nice word--"paucity". There is a paucity of good vocabulary words these
days, and this word helps improve that situation. (Homework for all
wrenches: Use paucity correctly in a sentence in one of your next three
emails.)

Bill.



-----Original Message-----
From: William Miller [mailto:wrmiller at slonet.org]
Sent: Wednesday, March 07, 2001 4:42 AM
To: RE-wrenches at topica.com
Subject: RE: QO Breakers and Panels [RE-wrenches]


At 08:43 PM 3/6/01 -0800, you wrote:
>
>Enough of this. We have listed equipment at 125 Volts for 12, 24, and
>48-Volts systems that is readily available, inexpensive, and works. I'm
>wondering what the problem is.
>
>Bill.
>

Bill:

I see a paucity of equipment to be used for combing arrays.  Specifically,
Trace makes a fused combiner and that's it (other than building one
yourself, such as the one featured in Home Power a few months ago).  I
don't favor fuses for this application.  Am I unaware of products available
for this purpose?  Please let me know if there is anything else out there
to use for this purpose.

Are you aware that Square D will factory certify QO breakers for 125 VDC in
NQOD panels?  Is this as acceptable to a local inspector as a UL listing?

Thanks,

William Miller


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To send a message:
 RE-wrenches at topica.com

The archive of previous messages: 
 http://www.topica.com/lists/RE-wrenches/

List rules & etiquette:
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To unsubscribe send a message to: 
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To check out the other RE-Wrench participants:
 www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine: 
 www.homepower.com

For info contact list moderator by email:
 michael.welch at homepower.com

____________________________________________________________
T O P I C A  -- Learn More. Surf Less. 
Newsletters, Tips and Discussions on Topics You Choose.
http://www.topica.com/partner/tag01