[RE-wrenches] DC circuit breakers in parallel

[John Berdner]

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] On Behalf Of Ryan
Sent: Wednesday, February 27, 2013 8:45 AM
To: 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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