I like your copper pipe straps to connect batteries. I wanted to use
threaded rod to connect mine, but I wasn't definitively sure how to
determine the Amp capacity of conductors that aren't standard wires.
Those U-shaped bits of 4/0 copper wire were surprisingly time consuming
to make.
I imagine there's some formula related to the surface area and material
properties, but I didn't find it easily.
------ Original Message ------
From: "Zach Underwood" <[email protected]>
To: [email protected]
Sent: 8/31/2017 1:29:35 PM
Subject: Re: [AFMUG] OT Home Battery Array, Generator and Solar
Readiness
I forgot to include a picture of the battery bank. That is 390ah at 48
volts made up of 5 strings of 78ah agm battery. Load right now is about
2kwh per day and it is charged with 4x 275 solar panels and a midnight
kid.
On Thu, Aug 31, 2017 at 1:21 PM, Zach Underwood <[email protected]>
wrote:
I am running the 2kw 48 version of the Aims for my off grid shipping
container. One very nice thing about aims in the the surge rating.
Mine has a base of 2kw, surge to 6kw for 20 sec and 4kw for 5 min (I
think it is 5 min). I have ran chop saws, air compressors and table
saws on it.
On Thu, Aug 31, 2017 at 1:12 PM, Adam Moffett <[email protected]>
wrote:
http://www.aimscorp.net/12000-Watt-Inverter-Charger-48-volt-120-240vac.html
<http://www.aimscorp.net/12000-Watt-Inverter-Charger-48-volt-120-240vac.html>
I hooked up one of these. 12kw, or 50 amp at 240v. So I feed a sub
panel with it, and every circuit on the sub-panel is battery backed.
The link says it's $3000, but you'll really pay something like $2600.
Then you have to account for batteries and wiring.
It's not exactly what you're asking for, but it's pretty cost
effective. It only runs in charger mode or inverter mode, not both
at once. So when you're in charger mode you're not getting "clean"
power, just whatever comes in off the utility grid.
There's also a 10ms delay when switching from charger mode to
inverter mode, and some devices could reset during that blip. The 4
batteries in the picture give me 4800 watt hours. Which might only
be 15-20 minutes at full load, but it's never at full load. I'd
expect to get a few hours out of it in reality. Long enough to drive
there and take action if the generator failed to start.
------ Original Message ------
From: "Sterling Jacobson" <[email protected]>
To: "[email protected]" <[email protected]>
Sent: 8/30/2017 5:03:07 PM
Subject: [AFMUG] OT Home Battery Array, Generator and Solar Readiness
Looks like it’s about $6k plus installation for a TESLA Wall
battery.
Couldn’t I just get about 10 $165 batteries and put them in an array
in my utility room?
I’ve got a Generac transfer switch that I haven’t hooked up.
Ideally I would like to have ‘clean’ power through some sort of
whole home inverter/conditioner for regular utility power.
Then if the power glitches I would like to seamlessly run off a
battery array for a few minutes until the Generator comes online.
Then have a whole home generator on NG for any extended power
outages.
But I’m having a hard time finding online any sort of DIY or
sample/guide for electricians to make this.
Is this not ‘normal’ now days?
I don’t have solar, but would like to consider it in the future as
well.
Wife doesn’t like the look of panels on the roof ☹
--
Zach Underwood (RHCE,RHCSA,RHCT,UACA)
My website <http://zachunderwood.me>
advance-networking.com
--
Zach Underwood (RHCE,RHCSA,RHCT,UACA)
My website <http://zachunderwood.me>
advance-networking.com
