back up power supplies

ccBear

Thanks chainsaw, I was at your place a couple of weeks ago. Thanks for showing me around. If I could not find the info on the site was going to give you a call.

Will start to look for some IBC in the next couple of weeks but have a few different things on the plate. Unfortunately they are not barra or trout. :upset:

Once again thank you for a look at your system.

Cheers. Robert

helomech

ccBear wrote:

I would love to see how to wire up the Jaycar relay mention 4 post's back. Can it be wire to a air stone and a 12v pump at the same time.

240v motors and appliances are being sold in the states and used legally. They refere to them as heavy duty not sure but believe it is because they last longer.

We have always had 240 volt here in the U.S., all our high draw things run it, dryers, water heaters, stoves, ovens and such. But all the lower draw things run 125vdc (everyone says 110). 240 is just two 125 volt legs wired together.

chainsaw

Got you now Bear, these days I suffer from CRAFT disease. Am in Townsville until 19th

ccBear

No problems CS have fun mate :headbang:

Privatteer

helomech wrote:

We have always had 240 volt here in the U.S., all our high draw things run it.

Most household stuff is all single phase 240v in Aust. But 415v/3phase is sometimes used for the bigger domestic aircons etc.
Commercial/industrial very common for 415v.
Don't see a lot of 2 phase items except in rural areas.

vk3laj

http://www.powerwerx.com/batteries-char ... .html#desc

That would work.. Charges a battery as well.
Just feed in 13v via a plugpac via your mains, and if that gets disrupted, it switches to batterys..

nebbian

helomech wrote:

We have always had 240 volt here in the U.S., all our high draw things run it, dryers, water heaters, stoves, ovens and such. But all the lower draw things run 125vdc (everyone says 110). 240 is just two 125 volt legs wired together.

I'm pretty sure that it is AC not DC for normal house wiring in the USA, despite Edison's best efforts...

werdna

nebbian wrote:

helomech wrote:

despite Edison's best efforts...

Funniest thing with that phrase is most people have a blank look on their face when you say that.

chillidude

werdna wrote:

nebbian wrote:

helomech wrote:

despite Edison's best efforts...

Funniest thing with that phrase is most people have a blank look on their face when you say that.

Yeah, I would have until I recently saw something about him on TV and they talked about him wanting DC powerstations - interesting history.

Rich L

I've worked a lot with standby power. Normally and UPS is used for emergency power to critical systems until engines come up. It's a load/battery size sort of thing. In essential and non-essential systems, the power is allowed to fail and an engine generator comes on the line and takes over. A computer would probably be connected to an ups to avoid a reboot, but a pump can normally live with an outage until a generator takes over.

I raise koi! I've had outages as long as two weeks, wh8ile I was on vacation. I told the person watching them to stop feeding and just keep me posted if the fish started gasping for air. Because I had such a low load (only 20 large koi) there was no problem. When I returned, I purged the filters and lines as best I could so the fish weren't exposed to toxic water. after that I fed lightly for a week while the filter bacteria recolonized.

Batteries are rated in amp hours! You can determine the current drawn (in amps) and divide that into the amp hours to get an idea how long the battery will supply the UPS.

mattyoga

werdna wrote:

nebbian wrote:

helomech wrote:

despite Edison's best efforts...

Funniest thing with that phrase is most people have a blank look on their face when you say that.

Made me laugh, especially seeing he used the electrocution of an elephant by evil AC in his campaign. Poor old topsy!
http://en.wikipedia.org/wiki/Topsy_(elephant)

(disturbing video warning for link)

RupertofOZ

A little bit more to the story than that...

http://en.wikipedia.org/wiki/Topsy_%28elephant%29

Yavimaya

Poor topsy, people are such absolute scum.
i used to have respect for edison.....

mattyoga

RupertofOZ wrote:

A little bit more to the story than that...

http://en.wikipedia.org/wiki/Topsy_%28elephant%29

Thats right they poisoned the elephant first, then electrocuted it. The 6.6kV AC seemed more effective! 6.6KV DC would have been perfectly safe!

Would have probably been a better way to go than hanging though!

Yavimaya

or they could have released it into the wild.....

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