[RE-wrenches] shunt trip breaker with outdoor disconnect offgrid

[Kirk Herander, VT Solar, LLC]

You would need a shunt trip rated @600vdc , 25 amps I'm guessing. A DC rated contactor might be better, but where to find either? And what control voltage will the ST or contactor use? I assume its grid-tie if an AHJ is involved.
The LG RESU would also require both pos and neg be switched off (ungrounded neg) for code compliance. You are probably best off running the battery leads outside to a 600vdc dp safety switch. And then back it's only 10 ga, wire
back and forth.


Kirk Herander / kirkh at vermont.solar [mailto:kirkh at vermont.solar]
Owner|Principal, VT Solar, LLC
Celebrating our 29th Anniversary 1991-2020
www.vermont.solar [https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com&data=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842843233477645&sdata=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D&reserved=0]
dba Vermont Solar Engineering
802.863.1202
On 8/13/2020 2:08:33 PM, Jerry Shafer <jerrysgarage01 at gmail.com> wrote:
Wrenches
Very interesting, l have a JHA that is requiring a shunt trip for the LG battery, any ideas here
Jerry

On Thu, Aug 13, 2020, 11:01 AM Kirk Herander, VT Solar, LLC <vtsolar at icloud.com [mailto:vtsolar at icloud.com]> wrote:

Hello,
Any of you ever use a 120vac-enabled shunt trip breaker on the inverter output at the main load panel, and have it controlled by a small AC disconnect switch outside?
I say offgrid because I doubt any utility would grid-tie approve as an outdoor disco, it since it does not visibly open the inverter output power wires.

But it wound save in round-trip inverter wiring outside and back in to the load center, and perhaps a big AC outdoor disco in larger systems.


Kirk Herander / kirkh at vermont.solar [mailto:kirkh at vermont.solar]
Owner|Principal, VT Solar, LLC
Celebrating our 29th Anniversary 1991-2020
www.vermont.solar [https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com&amp;data=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842843233477645&amp;sdata=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D&amp;reserved=0]
dba Vermont Solar Engineering
802.863.1202
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