[RE-wrenches] DC circuit breakers in parallel

[boB]

On 2/27/2013 1:23 PM, bob ellison wrote:
>
> Makes me wonder how many dual breakers I have taken the handle tie off 
> and used as singles in the past. It has been several, and none with no 
> internal connections that I could find or notice, with the exception 
> of longer rivets holding them together.
>


This is fairly easy to test for.

Remove the pin, reset the breaker handles and then basically apply a 
battery across the breaker
terminals.  If it is internally connected, both handles will flip 
together even without
the pins tying them together for switching.

If you are afraid of sparks and arcs, use a 12V battery.

Use real wire. No rat shack clip leads !

boB



> Granted it has been a while since I have done that.
>
> Later,
>
> Bob Ellison
>
> *From:*re-wrenches-bounces at lists.re-wrenches.org 
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On Behalf Of *John 
> Berdner
> *Sent:* Wednesday, February 27, 2013 2:06 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] DC circuit breakers in parallel
>
> Larry:
>
> The Code requires parallel breakers to be designed for this 
> application (internally ganged).
>
> Just using a handle tie does not allow you to use the poles in parallel.
>
> Best Regards,
>
> John Berdner
>
> General Manager, North America
>
> SolarEdge Technologies, Inc.
>
> 3347 Gateway Boulevard, Fremont CA 94538 USA */(*Please note of our 
> new address.)/*
> T: 510.498.3200, X 747
>
> M: 530.277.4894
>
> *From:*re-wrenches-bounces at lists.re-wrenches.org 
> <mailto:re-wrenches-bounces at lists.re-wrenches.org> 
> [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On Behalf Of *Ryan
> *Sent:* Wednesday, February 27, 2013 8:45 AM
> *To:* re-wrenches at lists.re-wrenches.org 
> <mailto:re-wrenches at lists.re-wrenches.org>
> *Subject:* Re: [RE-wrenches] DC circuit breakers in parallel
>
> Larry
> Our 100 amp din rail is essentially 2 breakers in parallel. So in 
> theory the 2 60 amp breakers "Could" work but. My concern would be 
> that they may not be tripped at the same time where they are not 
> internally ganged. I can't say "Go Ahead" but.
>
> Ryan
>
> -- 
> Ryan Stankevitz
> Technical Support Manager
> MidNite Solar Inc.
> ryan at midnitesolar.com  <mailto:ryan at midnitesolar.com>
> 360-403-7207 XT 151
> Skype ID ryan.midnite
>
>
>
> On 2/27/2013 11:21 AM, Larry Crutcher, Starlight Solar Power Systems 
> wrote:
>
>     We are installing the system today and I only have 60amp in stock.
>     Customer lives in CA and is leaving today after the installation.
>
>
>     Larry Crutcher
>
>     Starlight Solar Power Systems
>
>     On Feb 27, 2013, at 9:17 AM, Jonathan Hill wrote:
>
>     Why not use one of Midnite's new 100 amp din breakers?
>
>     Jonathan Hill
>
>     Solar applications engineer
>
>     Solar Electric Supply
>
>     530-559-3781
>
>     solarjon at solarelectricsupply.com
>     <mailto:solarjon at solarelectricsupply.com>
>
>
>     On Feb 27, 2013, at 8:06 AM, "Larry Crutcher, Starlight Solar
>     Power Systems"<larry at starlightsolar.com
>     <mailto:larry at starlightsolar.com>> wrote:
>
>         Hello Wrenches,
>
>         I am installing a Classic 150 controller in an RV with
>         potential 95 amps output at 12 volts. The customer has a
>         Midnite DIN box and wants me to use it for the controller
>         output. I am out of 150VDC breakers but I have two 60 amp
>         breakers. Is it safe and reliable to use the 2 breakers in
>         parallel for this purpose? I can pin the two handles together.
>         There will be other circuit protection at the battery.
>
>
>         Thank you,
>
>
>         Larry Crutcher
>
>         Starlight Solar Power Systems
>
>
>
>
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