Recent content by chicagoandy

Most residential smoke detectors have interconnects, typically at 120v. The following products are simple relays that expose 120V when the alarm is active. They can also expose lower DC voltage, depending on model. Kidde - Interconnect Accessories Smoke Relay Module: 408-Sm120X First Alert...

Thanks for taking the advice and following through.

Your Multiplus can pull 3,000 watts. Divide that by 12V and you get 250 Amps, just for the inverter. Add additional amps for your other DC current. AWG-2 cable is far too small for what could be 300 Amps. The Victron Multiplus that you're using specifies two paralell runs of 50mm cable...

I am totally aligned on 'cost engineering' whenever possible. I will note that Current Connected right now has 350Amp T-Class fuses for $39. That's about half what you see them typically selling for. I ordered some spares.

That's a lot of assumptions to trust your house on. To save how much money? How many fuses have you bought? Y'all can do what you like, I'll stick with the reputable sources. Fake fuses are a thing, they have fooled distributors and retailers, they can fool you too. Grey market is also...

I have zero doubt that it's only a matter of time. But even if they're not fake, how to does one know they're not factory rejects, seconds, returns, anything. Most of us do not have the equipment to test these. I am king of "cost efficiency", but there are areas we should not cut...

Yeah, there's a lot of fake fuses out there. Not sure I'd be buying any life-safety critical components on Overstock. Or AliExpress or Alibaba or Temu or Ebay. Only buy: Littelfuse, Eaton, Bussman, or similar top-line fuses from legitimate electronic or marine retailers. Amazon is OK if...

Here's a good thread on tank sensors for Cerbo GX: https://community.victronenergy.com/questions/54949/cerbo-gx-sensor-recommendations.html They mention many different ones that work, but they all appear to use float-sensors rather than ultrasonic.

Interesting site, great prices on the MRBF, but very expensive for the class-t. Thanks for the tip.

No.

Current Connected site clearly shows you want the Pytes if you want closed comms with solark as a supported configuration Sol-Ark will happily do closed-loop comms with anyone that supports the protocol. They advertise "Any Battery", and they list more than 20 supported battery vendors...

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Thanks! They do not make parsing these documents easy for non-professionals. It intuitively makes sense that lower voltages would be easier to break, but I was going by what I understood in the doc. Higher AIC for Alternating Current also makes intuitive sense. Yep, adding overcurrent...

Sorry, I meant to ask - What is the point at which large parallel batteries can have a max discharge beyond the capability of Class-T fuses? - my question wasn't about inverter inrush, but just - "how big is too big" for a Class-T ?

Capacity of the fuse is measured in amps. 50a, 100a, 150a, etc. I would use a 350a. This value speaks to the rated amperage the fuse will blow, after a certain amount of time has expired. My question here is about AIC. AIC, or Amerage Inrush Current, is something completely different...