Inverter protection [RE-wrenches]

[Kurt Nelson, SunWise]

Steve Willey, Backwoods Solar wrote:
> 
> I also use a breaker between that battery cable point and the C-40, NOT just between C-40 and PV.  It seems there needs to be some protection between battery and the control itself, even more important than that between control and PV.  Its battery current we are concerned most about.
> 
I also like to see a fused disconnect (or breakers) on either side of
the charge controller.  I agree that the main concern is current from
the battery, not from the PV where-in all conductors are sized to carry
at least PV short circuit current.  In some systems with a budget, I
have used a single breaker (in the DC250) between the charge controller
and the battery, with the PV (low current) side protected by the fuses
in the collection center.  On the other hand, I have installed systems
where-in I considered the fuses in the collection center to be
"optional" in systems with appropriate over-current and current
inturrupting devices on both sides of the charge controller.  

Kurt Nelson


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

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

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  http://www.topica.com/t/17
Newsletters, Tips and Discussions on Your Favorite Topics