Re: [RE-wrenches] Module-Level Shutdown for off grid systems

On Mon, 30 Sep 2019 15:49:32 -0700, Dave Angelini Offgrid Solar wrote: Thanks Jason, I have one question on the sentence, ". If a dc circuit comes from the PV array and enters a home then you need a means to bring that circuit below 30V before attaching to, or entering, the home. That

Re: [RE-wrenches] Module-Level Shutdown for off grid systems

Hi Dave, If I was your AHJ then sure but since I’m not, you would need to work through their comfort with this approach since the 690.12 Code language is “PV system circuits installed on or in buildings shall include a rapid shutdown function to reduce shock hazard...” Note the requirement

Re: [RE-wrenches] Module-Level Shutdown for off grid systems

Hi Jay, Ray makes the right distinction between the PV system and other systems that I think applies to your example. This was the big change in 2017 as we pulled all the non-PV stuff out of 690 and created 706, 710, etc. The PV system disconnect is what you identify it to be though. Article

[RE-wrenches] Power OB mate stand-alone

Hello, i have several older Mates i want to energize to read firmware versions. Is there a way to do this without access to a hub / inverter / controller / etc.? There must be a pin assignment avail for the cat5 patch cord. Thanks. Kirk Herander

Re: [RE-wrenches] Module-Level Shutdown for off grid systems

Thanks Jason, I have one question on the sentence, ". If a dc circuit comes from the PV array and enters a home then you need a means to bring that circuit below 30V before attaching to, or entering, the home. That might be a readily accessible disconnect (marked as an RS initiation device)

[RE-wrenches] Bergey XL.1 HummmBuzzz

Friends, I've exhausted the Bergey tech support expertise on this issue and I'm hoping someone on the list may have a solution to share. I have a customer with an older XL.1 on a tilt-up tower. The machine has been in place since 2007. I've done some work to it over the years including blades,

Re: [RE-wrenches] Bergey XL.1 HummmBuzzz

Matt, What you are hearing is alternator noise. It's caused by the vibration from the permanent magnets passing by the alternator coils. All turbines produce some alternator sound, some more than others and the tower itself can act as a resonator, amplifying the

Re: [RE-wrenches] Module-Level Shutdown for off grid systems

The PV system (and 690.12) stop at the PV Disconnect. (see figure 690.1(b), Note (2)).  Charge Controllers are part of the Energy Storage system (706) now.  We presented this in our plan sets, and we drew clear lines on the wiring diagram showing which articles applied to which parts of the