[RE-wrenches] Breaker trip

[garyh at solarindependence.com]

Mac,
I had 2 midnite charge controllers trip breakers and eventually fail the 
charge controllers on a Magnum system, moved the battery breaker from 
the battery positive bus direct to the batteries and problem went away.

On 2017-12-06 05:18, Mac Lewis wrote:
> Hello wrenches,
> 
> I've got a mysterious breaker tripping that I need some ideas on how to 
> fix.
> 
> Original system:
> Array 6 x 235W Kyocera modules
> 1 x Outback FM60 charge controller
> 1 x Magnum MS 4024 PAE inverter
> 
> Upgraded system we stacked a second inverter to accommodate an air
> compressor:
> Array 6 x 235W Kyocera modules
> 1 x Outback FM60 charge controller
> *2 x Magnum MS 4024 PAE inverter*
> 
> There have been no changes to the solar array, just to the inverter 
> side of
> the system.  We have been getting intermittent breaker tripping (a 
> couple
> of weeks between) on the battery breaker side of the charge controller.
> The basics have been checked and rechecked.  Torque is good on all 
> sides of
> the breaker all the way to the battery bussing.
> 
> The only thing that I can think of is that during a surge on the AC 
> side
> its sucking enough current out of the charge controller caps to trip 
> this
> breaker occasionally.
> 
> Has anyone experienced this?  The only way I can see to fix it is to go
> with a larger breaker ampacity, but maybe there is something better.  
> Does
> anyone no how quickly the max current setting in the Outback can 
> respond,
> would dropping this help?
> 
> Thanks
> 
> --
> 
> 
> 
> Mac Lewis
> 
> *"Yo solo sé que no sé nada." -Sócrates*
> _______________________________________________
> List sponsored by Redwood Alliance
> 
> List Address: RE-wrenches at lists.re-wrenches.org
> 
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
> 
> List-Archive:
> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html
> 
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
> 
> Check out or update participant bios:
> www.members.re-wrenches.org