QO Breakers and Panels [RE-wrenches]

[Travis Creswell, Ozark Solar]

Are Square D QO 's rated for 48 volt (battery) systems?  I know that Wiles
mentions Q0 in his Sandia Handbook but I can't find it.   From memory it
seemed like the wording was possibly a little ambiguous about 48 systems but
like Smitty I suffer from C.R.S.

Also who determined that QO are O.K. for use in DC?  There is no mention of
them being DC rated on the breaker or the panels themselves.  For example.. 
 We frequently use 250 V AC/DC disconnects (not 240 v) available at any
electrical supply house and they do say "250 volts DC"  on them.

Has anyone had trouble with inspectors catching this?  I never get inspected
on my rural jobs.  I'd pull a permit if there was someone to get it from but
in rural MO and AR there isn't.  I do get inspected several cities but I
haven't done any DC load centers on these jobs.  

In the last few years Square D came out with a "Homeline" brand of 1"
breakers and panels.  Has anyone heard if they are rated for DC?

Travis Creswell

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

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

List rules & etiquette:
 http://www.mrsharkey.com/wrenches/etiquete.htm

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

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