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I believe they've also dramatically cut the costs? I recall the pre-orders were $800ish? Now I see then for $328, a far more reasonable price. Hoping they make a 24v soon.

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...

Thanks for taking the advice and following through.

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...

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...

Coming back to this thread, I have created some wiring designs. As a reminder, this is going ontop of a Ford Transit. Dual AGM Batteries, Dual 250A Alternators. The 1,000 watts of solar I have is the most that can fit uptop. Batteries are currently spec'd as 4X 12V 300AH from Epoch...

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

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...

Hello, I'd love to get some opinions on the following electrical system for my Ford Transit, High Roof Extended Wheelbase. Key usage pattern will be "Family adventure wagon", with a Sleep4/Seat4 configuration. Long road trips primarily in the SouthEast and SouthWest, but also Canada and the...

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.

Yes, great point. The Ford Transit alternators are 250 amps, and the second alternator is tuned for low RPM. I think we should be good on that point.

Thank you Harry. In their wisdom, Sterling put 8.9mm ports on their largest B2B chargers, so we're effectively limited to AWG-2. I will be keeping that run short, mounting the unit between the B and C pillar. In terms of consumption, most of the kitchen loads will run at less than...

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...

Hello, I am looking to monitor the energy generation from my B2B system. I was assuming I could do this with a SmartShunt. However, these can only be attached to negative lines. My van uses a Chassis Ground. The Lynx Distributor grounds the negative busbar to the chassis, and likewise...

I have built a small "UPS" using a 100ah 12V battery, and a 600W Giandel inverter, and a Xantrex Prowatt PS automatic transfer switch. https://www.amazon.com/gp/product/B004S5Y158 The Xantrex does not share a common ground accross the legs. Thus when I'm on battery, the inverter is not...

I've updated my post, the overnight rates are not $.02, Georgia Power does hide a number of cost recovery fees, including a large $.06 fuel recovery fee. Admittedly they are still low enough to make a Californian angry. Overnight "all-in" are roughly $.08, and $.32 during the afternoon...

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.

That aligns with the post I linked to, it mentions International Fire Code, and International Residential Code, but not NEC.

I'm in the process of acquiring the large Ruixu server rack. It's 10 48V 100Ah server racks assembled in parallel. It'll be paired with a Sol-Arc 15k. I'll be attaching a fuse to the rack for safety. Currently I'm planning a 350A class-T fuse, the Bussman JJN-350. This has an AIC of 20...

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...

Interesting read. I am planning on using a busbar setup with each battery having an independent, equal-length 4/0 connection to bus bar, then the bus-bar connected to inverter at diagonals via 4/0 cable. All of that is provided out-of-the box from Ruixu. I'm not sure how I'd adapt the...

How do we calculate the inrush capability of a battery pack?

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'm looking to build my first battery. I've noticed some BMS's, like Daly, will have leads and all the system load will transfer through the BMS. Others, like REC BMS, only have sensor leads to monitor cells, and don't carry the system load. Are there advantages to one style over the other...

Good question! In the state of Georgia, most of the fees are still based on usage. For example: Nuclear Construction Cost Recover Fee: "All bills rendered subject to the NCCR Schedule shall be respectively increased in an amount equal to 3.8130% of their base bill calculations which exclude...

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 ?

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Yes, Georgia is NEC2020. I've seen other threads here which indicate that UL9540 is only required in California, and UL9540A (batteries alone) is the national standard. Here's one example: https://diysolarforum.com/threads/paired-vs-non-paired-ul9540-requirement.68238/#post-861979 Hence my...

I did look at Pytes, but they don't publish pricing so I moved on. I landed on the Ruixu from Will's video, and his strong recommendation. The price is excellent. It's not 50K, it's 30K after tax credits. I think you're confusing ROI and payback, I get ROI the very next month when my...

Hello, I was hoping to get some feedback on a quote from a custom installer. Inverter Sol-Ark 15K Optimizer 26 X Tigo TS4-A-O + monitoring & shutdown Panels 26 X REC 420AA Pure 2 Total System Price - REC : $34,725.60 or 26 X QCells Q.PEAK DUE BLK ML-G10 + 410 Total System Price -...