29
Cheap UPS solution?
(feddit.nl)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 15 Aug 2023
29 points (89.2% liked)
Selfhosted
40219 readers
412 users here now
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
Rules:
-
Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
-
No spam posting.
-
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
-
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
-
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
-
No trolling.
Resources:
- selfh.st Newsletter and index of selfhosted software and apps
- awesome-selfhosted software
- awesome-sysadmin resources
- Self-Hosted Podcast from Jupiter Broadcasting
Any issues on the community? Report it using the report flag.
Questions? DM the mods!
founded 1 year ago
MODERATORS
Man. That AIMS low frequency inverter is nice.
I actually bought one of those cheaper Chinese pure sine wave inverters, but found that they don't run motors/power tools that well. The surge current demand just exceeds anything they can provide. They're great for resistive loads like PCs/LEDs/Hotplates, but if you wanted to run a table saw or something the AIMS is the only way.
Cheaper or not, isn't a huge factor.
My really expensive sol-ark 12k cannot start my 110v air-compressor.
The issue is, the rated L.R.A. ie, locked rotor amps, how much current it takes to get it started.
My A/C motor, for example, uses around 20 amps @ 240v when running, ie ~5,000w. However, its L.R.A, is 112.0 amps @ 220v, ie- (24,640 watts). Which is more than the peak load my 12k inverter can handle. So- if you tried to start it on the inverter, well, it doesn't work.
https://static.xtremeownage.com/blog/2023/off-grid-ac/
The same principle applies to anything with a motor.
You have to evaluate the L.R.A. Remember, if you have say, a 5,000watt RMS inverter, which can handle a 10k peak- its not going to be able to start something that has a 14,000 startup draw.