As does Watteredge.-GlennSent from my 'smart'phone, so please excuse typos and
spelling errors.-- Original message--From: William Miller via
RE-wrenchesDate: Tue, Sep 19, 2023 2:09 PMTo: RE-wrenches;Cc: William
Miller;Subject:Re: [RE-wrenches] GT w/ BBStorm Copper has tables. William
Mi
Storm Copper has tables.
William Miller
Miller Solar.com
805-438-5600
www.millersolar.com
On Tue, Sep 19, 2023 at 7:13 AM Jay via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Thx Michael
>
> How do you calculate buss bar size?
> Is there a specific formula or table I can find?
>
>
For a general rule of thumb, I use NEC 366.23 "ampacity of conductors in
sheet metal gutters". For anything large or needing inspection, I have my
electrical engineer design the bussing as he will factor energy density and
temperature rise across the bussing. It's pretty straightforward for DC
buss
Thx MichaelHow do you calculate buss bar size?Is there a specific formula or table I can find?ThxJayOn Sep 18, 2023, at 5:15 PM, Michael Morningstar wrote:I've been making gutter bus wireways that run the length of batteries and inverters allowing for exact lengths of cables. I think I posted a p
I've been making gutter bus wireways that run the length of batteries and
inverters allowing for exact lengths of cables. I think I posted a picture
of an exceptionally large one. 24' long. I'm looking at the rack mounted
set up because the bussing and cabling is done. 3 racks of 6 5kwhr
batteries.
Sounds like a good design. As a tangent question to 13 parallel batteries, such as you’ll need Michael. How are people wiring larger numbers of lithium batteries together in parallel?Massive buss bars which I’m not sure how to do in a code compliance way. Or Not worrying about different cable lengt
Jay,
I'd like to design for 60kw supply and 100kWh battery. I think I'm going to
try the Discover rack mount set up rather than AES's and custom bussing.
Jason,
That's exactly what I was thinking, if I go the Sol-Ark route. Last time I
ordered custom panelboards like that, they were six months out.
If 40kw is the peak and then there are new added loads, what 50-60kw? If it was me I’d be designing the inverters to handle the 50/60 kw with future expansion capabilities beyond that. Then how much kWh of storage are you going to need or maybe are planning for?At some point maybe looking at a lar
I like the Sol-Ark idea having had a few dual-unit successes recently. In
terms of combining them, the Sol-ark manual has a good triple unit wiring
diagram on page 53. You would have to use two 400A panelboards with three
200A breakers for each to follow this diagram. However, I don't see the
point
Michael
Great questions. We have had great success with the Sol-Arks, starting with
the 8’s. Have completed several with twin 15’s and the systems have been great.
There was a software/ firmware issues when they first came out.
Having spent years installing AC coupled systems ( though
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