[RE-wrenches] Breakers weakening?

[Brian Mehalic]

Yikes. Didn’t realize that about the ConnectDER. Repeated tripping due to a fault can certainly damage internal parts and contacts, leading to resistance and operation and lower than the rated current. 

Brian

> On May 9, 2021, at 7:06 AM, Kirk Herander, VSE <kirkh at vermont.solar> wrote:
> 
> 
> The breaker is actually in a "connectder", a meter collar add-on which plugs into the meter socket, and the house meter plugs into it. It creates a point of interconnect outside of the house panel. Unfortunately the breaker itself cannot be removed and replaced. The entire collar must be. That's $365 to fix a $20 breaker.
> 
> Kirk Herander / kirkh at vermont.solar
> Owner|Principal, VT Solar, LLC
> Celebrating our 30th Anniversary 1991-2021!!
> www.vermont.solar
> dba Vermont Solar Engineering
> 802.863.1202
>> On 5/9/2021 8:56:27 AM, Chris Mason <cometenergysystems at gmail.com> wrote:
>> 
>> I'm presuming this is a breaker in a load center.
>> Breakers fail, that's not unusual. Breakers for inverters undergo constant load so they will run hot all the time and will be prone to failure.
>> It may have always been out of tolerance, most applications never push the breaker close to the limit.
>> I would just swap it and move on.
>> 
>> On Sat, May 8, 2021 at 2:13 PM Kirk Herander, VSE <kirkh at vermont.solar> wrote:
>>> I have a system where the SE10000 inverter fried internally. The 60A AC output breaker tripped several times, as a result of the homeowner resetting over and over until he called me.
>>> I replaced the inverter under warranty and all is fine, except on sunny days the breaker will trip at about 40A, close to the max output of the inverter. Reset it outside of peak inverter output and its good. I assume the breaker has weakened from stress of some sort, so I replaced it and time will tell.
>>> Anyone ever seen a breaker have it's trip point reduced like this?
>>> 
>>> Kirk Herander / kirkh at vermont.solar
>>> Owner|Principal, VT Solar, LLC
>>> Celebrating our 30th Anniversary 1991-2021!!
>>> www.vermont.solar
>>> dba Vermont Solar Engineering
>>> 802.863.1202
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>> 
>> -- 
>> Chris Mason
>> Solar systems designer
>> Generac Generators Industrial technician
>> 
>> Comet Systems Ltd DBA Comet Solar
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