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    PG&E \ Off-Grid System Design

    My house is still connected to PG&E running all my other loads. I know 8 panels isn't a ton but I have a small house and that's all I can fit right now. We're adding on soon and I should be able to add another 4-5 panels down the road. I'm in the Bay Area so we don't deal with sustained high...
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    PG&E \ Off-Grid System Design

    I think the for time being I am going to eliminate any grid interaction at all -- including a transfer switch. I really just need to offset the cost of PHEV. Eventually I'll install a switch to run the dryer from both. Thanks everyone!
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    JK BMS Leads - Connecting to Previous Leads? Or complete rewire?

    I'm ready to wire up my battery packs with JK BMSs and have a logistical question on most effective and easy way to do it. The battery packs were EV modules with each 6s13p unit having it's own onboard BMS. I removed the control boards but left the wiring harnesses on for now because I wondering...
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    PG&E \ Off-Grid System Design

    I knew Briggs and Stratton made lawn mowers but not transfer switches lol. Seems like a pretty good deal for an automatic one... B&S 50a
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    PG&E \ Off-Grid System Design

    Looks like the transfer switch maxes out at 30a. I have a 40a EV charger so not sure this will work unless I find a higher amp rated switch. I have seen some 50a options but, if I understand how these work, then the total circuitry in the switch box = 50a. If this is correct, then I wouldn't be...
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    PG&E \ Off-Grid System Design

    Indeed. It's why I'm trying to target all of my PV to powering them. We have a very small home with minimal power needs outside of those. I recently installed 3 heat pump mini splits that I do not plan on powering with PV at the moment since they're pretty darn efficient. We have 4 children...
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    PG&E \ Off-Grid System Design

    So..... forget the whole permitting process and just never connect it to the grid at all and make my life easier 😂
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    PG&E \ Off-Grid System Design

    I did not. I was unaware of this exemption but will look into it. Thank you. EDIT: nothing found after a few search queries. Do you have any documentation \ notices about this I could review?
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    PG&E \ Off-Grid System Design

    I admit it's not ideal but at the moment that's all the rooftop space I have available to me and those are the panels I've got. I'm under no expectation that I will be able to recharge the full battery bank each day until I am able to find a way to connect more panels into my system. The...
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    PG&E \ Off-Grid System Design

    So what you're saying is that because of this there is potential for the inverter to actually backfeed the grid which makes it connected. Is that right?
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    PG&E \ Off-Grid System Design

    In my jurisdiction it is and meets code unless I have RSS installed. " IF ANOTHER MEANS OF RAPID SHUTDOWN IS NOT PRESENT, PROVIDE A ROOFTOP DC DISCONNECT * @ ROOF WITHIN 3’ OF PV ARRAY ALONG ACCESS PATHWAY PER HAYWARD FIRE ORDINANCE."
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    PG&E \ Off-Grid System Design

    Yes, vague drawing because this particular drawing just has to show configuration of elements. I also have to include a single line drawing of all the electrical in the PV system. Thanks for the heads up on the manual transfer switch, I was unfamiliar with those and they seem like the solution...
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    PG&E \ Off-Grid System Design

    That's actually the goal in my mind. I didn't know of another way to do this until now 😂 = manual transfer switch.
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    PG&E \ Off-Grid System Design

    I'm trying to finalize documents to submit for a permit in my city (Hayward, CA) but am trying to figure out what exactly I need to include when it comes to disconnects and stuff. I am NOT interested in a grid-tie system but simply want to reduce my grid consumption by eliminating EV charger and...
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    Fleximount Shelves Flash Sale

    Yup, no doubt. Wish I would have checked the actual specs before ordering. Not a huge deal for me with my battery modules being used but still would have been nice to have the full 2'
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    Fleximount Shelves Flash Sale

    I will say the one thing I am disappointed about is that the listing is a bit deceiving as it says it is 2'x4' but the actual width of each shelf is only 18" which means my battery modules hang off either side.
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    A123, Battery EVO, Big Battery, Tech Direct, etc.

    Would you also mind sharing the .stl file for that 3d printed strap holder? I would like to be able to print one if needed.
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    A123, Battery EVO, Big Battery, Tech Direct, etc.

    @webbbn it's been a while but am FINALLY getting around to these modules and have a few additional questions for you. How can you tell which terminals are positive and which terminals are negative on each pack? I'm confused by the labeling on the units themselves and am unsure how to configure...
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    Fleximount Shelves Flash Sale

    Quick update: the shelving unit is pretty sweet. Very stable and each wire shelf is screwed down into the corners by a washer/bolt/nut combo. with those secured down it keeps the supports from popping loose out of the slotted receivers. I laid a sheet of 1/4 hardiebacker on top of each wire...
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    Cut Sheet Template?

    Edit: It is listed as a requirement on the permit application.
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    Cut Sheet Template?

    Oh that's all they are looking for? I thought you needed to compile everything into a single spreadsheet or something. I just need to pull all the data sheets and submit them? Is it for every single component like EMT or just the major components?
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    Fleximount Shelves Flash Sale

    Shipping was free. Total shipped (including promo code MEMBER10) = $139.53 Edit: instead of just a slip joint into a groove on the Fleximount? Would that matter terribly on the crossbeam considering the amount of weight resting on the shelf itself? I would think the battery weight would keep...
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    Fleximount Shelves Flash Sale

    2'x4' Shelving Unit Just bought one myself!
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    Wood Battery Shelving

    @Skypower -- Those racks look really nice, and not quite as deep as the Dewalt shelves Will mentions in a separate post, which I like about them. My battery modules are 2' L and so I would either have to have them hang a bit or put them front to back (which might not be that big of a deal I...
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    Cut Sheet Template?

    Would you mind posting a pic or sharing it with me so I can see what all needs to be included for mine? Thanks!
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    Wood Battery Shelving

    Trying to figure out the best shelving system for my DIY ESS. I've seen plenty of metal racks and server racks and wooden racks. Metal would want to be grounded. Wood catches fire easier. Is one substantially more safe/better than the other?
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    Cut Sheet Template?

    Finally have compiled all the necessary parts to begin install of my PV + ESS system. Added rooftop solar to my homeowners insurance policy ($20/yr) and getting ready to submit for a permit. Permit application requires "cut sheets for each product and install according to the manufacture’s...
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    300a Class T Fuse and Block

    Just opened everything up and here's a breakdown. Definitely NOS as they came in original unopened packaging. Not rust on the threaded rod. Looks like same anti-seize product I've used on spark plugs before. Fuse rests on the ABS with posts embedded into the mold it appear, they do not unscrew...
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    300a Class T Fuse and Block

    They are set to arrive today. I will keep everyone posted on condition
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    300a Class T Fuse and Block

    Decided to take a peek on eBay to see if I could find a deal on this final part to my PV setup -- and found a great one! Class T 300a Fuse + Block
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    Optimal Panel Placement

    From what I hear you saying it would be better to run 4s1p to an MPPT on each inverter. Ignorant question: does running 4s1p into separate MPPTs affect the amount of PV generated?
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    Optimal Panel Placement

    The confusion is probably mine then. What would be the difference between running 4s2p into one MPPT and 4s1p into an MPPT on each inverter? I plan to use both so that I can supply an AC load center with 240v.
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    Optimal Panel Placement

    As posted in other threads I've got a total of 10 415w 48v QCells panels I'm going to integrate into my (2) LV6548 + ESS setup. In previous posts (thanks to tons of helpful replies) it's pretty clear I'm either going to go with 4S2P with a string into each inverter or 3S3P with a couple strings...
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    Any use for contactors or SSRs?

    Looks like I've got my answers. Thanks for your replies!
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