The power supply is capable providing 300W for the PC. Assuming its efficiency is 85%, it draws 352W.
But this is the top, it does not draw always that power.
If the PC requires 30W while idling, the power supply will provide that, accordingly will draw only 35W.
(Approximately)
My server is not a PC, it’s an Odroid HC4.
There are lots of confusing information in the replies so to clarify.
The
Brennenstuhl Primera-Line, Steckdosenadapter mit
Is rated at
Amperage 16 Amps
Wattage 3680 watts
So thats fine.
Your eton power block would be fine plugged into that and would deliver enough power for your computer, printer, screen if needed and hub. No problem.
Only issue identified is the on off switch, as i did not see one, if you leave everything connected and running not an issue, but if you want to switch off evenings to save electic, then your wall socket needs a interrupting switch. But NOT and extension, wall prefered.
If her desktop, monitor, and printer are already powered off, does the surge protector and UPS draw very much power in idle mode? If not, then a on / off switch for everything would not not really be needed.
Right?
In principal the demand is almost zero, bit like modern phone charges. They have built in sensitive components when demand is zero so switch off. Perhaps a few euros per year. But as its a battery backup there could be a demand on power also heat generation fire risk, but very minimal.
Personally I disconnect or switch off everything for safety, never leave anything on standby. Kettles, toasters, microwave cookers, all off at mains. Only thing i leave plugged in and on is my router and bedside clock.
Because the nature of UPS I’d have it connected and powered up always.
I don’t understand this fear of a switchable power strip?
https://www.mediamarkt.de/de/product/_nedis-exso515ueswt-verlangerungsbuchse-102769186.html
What’s the problem with that extension?
It’s rated for 16 A, I have more of such (very similar) items, the switch in them are dual circuit switches, they disconnect both wires (active, neutral).
Disconnecting protective earth is not necessary.
The surge protectors cosumption is negligible.
The UPS will consume, as it has its own idle power, and has to keep the battery charged, so it will take I guess between 5 to 15W.
Monitor, printer, other periferals usually take 1 … 2W in standby, the PC itself can draw 5W in standby. Assuming 1 printer, 1 monitor, and a PC, the thing could draw 7W together when not in use. Say it is used for 5 hours a day, then the rest means approx. 4 kWh in a month, 49kWh in a year.
(Thi is just an estimation, the actual values should be measured).
How much money is that depends on the price of electricity. I totally understand @Rosika if she wants to completely switch off everything, and to get a real zero standby consumption.
Before energy price boom our house consumed 4700kWh in a year.
Did not care too much, we could afford easily. We already had LED lights.
After the boom, I looked around in the house, and minimized the number of stand-by devices (we had a huge lot of them!) now the yearly consumption is reduced to 3300 kWh, but I changed my server to an Odroid, which has cut the consumption from ~20W to ~5W 
So those stand-by Watts may matter, even if they seem to be negligible.
I have to ask, why router?
This could be a name issue. …
My livebox, is orange my internet provider, some may call it a router. I leave it connected all the time for 3 reasons.
Orange do system updates during the night when the network is quiet
If they try to connect to a line and no handshaking is replied to they are well known to just disconnect it or reduce internet speed to it
Sometimes in the middle of the night if either my wife or i cannot sleep, we tend to go on the net. Sad but true
Oh, I missed that.
So what protects the PC?
Perhaps i missed a step but to clarify i thought the setup was
Wall socket, => surge protection => ups => computer ?
So everything is protected in Line
Hi all, 
thanks so much to all of for your many responses 
.
Yes, Paul. That´s the correct setup. Thanks for pointing it out to everyone.
@easyt50 :
Well, actually my printer isn´t included in the setup. It´s situated at the other end of the room and it´s connected to a completely separate wall socket.
I make use of its Wi-Fi connection.
Right. And indeed I wasn´t thinking of a complete switch-off.
The only thing I want to power down during the night is the power supply of my external HDD.
That problem is solved by utilizing a power strip with on/off switch.
Thanks, Howard.
Well, that consideration is new to me.
Surely the UPS unit is meant to stay connected to mains at all times, right?
Right. I was thinking the same, László.
The Eaton “3S 550 DIN” comes with an on/off switch, but what´s the use case of this 
When would you want to switch it off? Surely not on a daily basis… 
?
No problem at all. I´ve been using it for years without any problems.
@nevj :
Well, up till now nothing is protected. I haven´t bought anything yet.
Just wanted to discuss all aspects here in the forum.
The PC, monitor and power unit of the external HDD should be protected thus in the end:
… like Paul correctly assumed.
Thanks to @Gary as well.
Many greetings from Rosika 
I did not have an answer to the ups myself, bits of me said switch it off, save power costs, not in use, rechargeable battery etc… but then other part of me said leave it on no harm.
So i ask the experts
Should I Turn off UPS When Not in Use?.
Suggestion is leave it on overnight.
If an uninterruptible power supply (UPS) is turned off but still connected to a power outlet for 24 hours, several things can happen depending on the type of UPS:
Battery Charging: Most UPS units have a built-in charging mechanism. If the UPS is turned off but plugged in, the battery may still receive a trickle charge, depending on the design. This is beneficial for maintaining the battery’s health.
Battery Condition: If the UPS has a lead-acid battery, it may take longer to charge fully when the unit is off. Lithium-ion batteries, on the other hand, can charge more efficiently. However, leaving a lead-acid battery discharged for too long can lead to sulfation, which could reduce its lifespan.
No Power Output: While the UPS is off, it will not provide any power output to connected devices, meaning any devices connected will not receive power until the UPS is turned back on.
Potential Damage: If the UPS is off for an extended period and the battery is not maintained, it could lead to a complete discharge or damage to the battery over time.
No Heat Generation: Since the UPS is off, it will not generate heat from operation, which can be beneficial in terms of energy conservation.
In summary, keeping a UPS plugged in while turned off is generally safe and can help maintain the battery, but it won’t provide any power backup until it is turned on.
I found this on Quora web site and it sounded interesting to me.
Dave Martindale
](https://www.quora.com/profile/Dave-Martindale-1)
Electronics hobbyist since 1965 or so.Author has 8.4K answers and 17.9M answer views4y
UPSes are designed to be plugged in continuously, and to have a computer plugged into them continuously. That’s the only way they will be ready to carry the computer through a power interruption. I don’t see much point in extending the life of a UPS by having it not connected ready to do its job. (If it’s not connected, there’s not much point in owning it.)
Most UPSes use lead-acid batteries. Lead-acid batteries will have the longest life if they are kept fully charged, and a UPS that is always plugged into the wall should be providing a continuous “float charge” to the battery. Every discharge cycle shortens battery life somewhat, so do not discharge the battery periodically.
Now, if you keep your computer completely shut down when you aren’t using it, you could also turn off the output switch of the UPS. This would keep the battery charged, and prevent the UPS from activating if there is a power failure when the computer doesn’t actually need input power. However, this is infrequent enough that it isn’t going to make much difference to the life of the UPS battery.
Hi and thanks to all of you for your latest replies,
Thank you for providing those informative links.
O.K., I get it now.
For me it´d be best to leave the UPS on at all times then.
The only thing still on my mind is the potential fire hazard when using UPSes.
You said “minimal”, but it still worries me a lot.
I found this disturbing comment on reddit:
Currently building a new PC and wondering how many of you run a UPS?
I never have over many years, but am wondering if it’s worth it for the peace of mind. I’ve been looking into a few models, but even the ~$200 ones have so many horror stories in the reviews (fires, melting down components, not actually protecting devices when an issue does occur, faulty manufacturing, etc.) that it really makes me wonder if it’s even worth it. Thoughts?
(bold by me)
Actually I never encountered any of those horror stories during my research on the web, but what the author says seems frightening. 
And you mentioned “fire risk” as well, Paul.
Oh dear, oh dear… 
.
@easyt50 :
Thanks for the links and the summary of the gist, Howard.
If I decide to purchase a UPS, I´ll know how to handle it then. 
Many greetings from Rosika
Sorry did not want to scare you, I have never seen one catch fire, and the internet is always full of stories when things go wrong never when they work fine.
How many electric scooters have been sold in the world ?
How many have caught fire, several, as a percentage its almost un measured but the internet is full of stories about fires…
If you buy from a well known make and its supplied by them, then electrical safety should be fine, its the cheap Chinese imports that are rip offs to worry about.
Bit like christmas tree lights every year the government takes control of the sales of cheap copies and destroyers them.
Think you should be fine with a real quality product.
Though I know chinese can produce very high quality and good stuff, when they want, or they are specifically asked for quality, they are unbeatable in making “cheap” things, where the word “cheap” is a synonym for “shittiest bad quality piece of crap”, and whatever grawlixes and cusses we used to read from @daniel.m.tripp (he has the most appropriate vocabulary to describe this, my english is not up to that task)
Recently my wife was seduced by temu, she could not withstand some really good looking items…
Let my warning stand here:
Disappointment is guaranteed!
What you will get, is somewhat similar to the photo on the webshop, but only looking from afar with a squint!
There is so much publicity for that company, everytime i open a web page or look at YouTube they pop up. With the prices they offer they cannot be any good in the products they sell.
Sorry to any members of the Chinese community who may read the site it was not meant as an attack on any individuals just the products and prices.
I ride a honda motorcycle which is from the factory in Thailand but the biggest selling honda motorcycle of all time is made in china The Sundiro Honda Motorcycle Co., Ltd. and Wuyang-Honda Motors Co., Ltd. are in charge of Super Cub Series production in China… and honda are known for the quality of build.
I do a quite lot of video work for the man who runs a motorcycle business.
He sells motorcycles from different brands, but all of those brands are from the same family, they belong to the KSR group. Malaguti, Brixton, Motron, Niu to name them.
All those are made in China. I know, Malaguti, Motron are designed in Italy, Brixton designed in Austria, I’m not sure about NIU, but it uses parts from Bosch and Panasonic, so built on well branded base.
Surely all made in China. And they are great vehicles, no matter electric or petrol driven…
My son owns a Motron Revolver, he loves it!
And it’s made in China too…
We have 3 Farm bikes. 2 genuine old Hondas bought as basket cases and restored. One Honda imitation quad bike. The imitation is fine mechanically, but its electrics are second rate… so far we have had failures of a coil, a magneto, a headlight, the mileage meter, and an electric winch.
Awww shucks - why thank you kind sir 
There’s too much of this going on these days - even on Amazon - I think the bad photoshop (they probably used Paint Shop Pro) copy and pastes of the product super-imposed (e.g. paste of their product pasted onto a generic bicycle for some kinda cycling accessory) onto another photo - I think they’re designed to catch the unwary using their phone - as a rule I NEVER buy stuff from my phone or even tablet - I ALWAYS use a web browser on a desktop computer (or laptop).
Nearly all of the stuff we get is made in China anyway (like Apple? Lenovo? Probably Dell) - it’s just that the internationals are tighter on quality control…
Anyone remember hearing the perjorative “Jap Crap” for cars, motorcycles and other products from the 1960’s (it may have preceded the 60’s but I wasn’t around until 1962) and 70’s? Bizarrely - Made in Japan is NOW considered by marketing as an indication of quality!