Question Use surge protector on pc that already have a built in protector in the psu? Not sure if it have it from before or not

Kellerman88

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Jun 30, 2019
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Hi.

My son having a Lenovo t7i pc that came with 850w psu 90% effiency, i dont know if this have a built in surge protector or not.
Want to connect it to my surge protector power stripe but i have readed that it’s bad to connect surge protectors into surge protectors?

So im not sure what to do in this case?
Cant find anything info about this psu.
 

Ralston18

Titan
Moderator
I am not aware of any PSU's with specific built in surge protection - at least suffiicient enough to handle daily hits and other electrical power problems often experienced in many areas.

And you do not want to connect surge protectors into surge protectors.

Surge protection is measured in Joules and protection is cumulative. One big hit may destroy all protection as can a series of smaller hits.

FYI:

Lifewire - Surge protectors

You can easily find other similar links to learn more about surge protection.
 
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Kellerman88

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Jun 30, 2019
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I am not aware of any PSU's with specific built in surge protection - at least suffiicient enough to handle daily hits and other electrical power problems often experienced in many areas.

And you do not want to connect surge protectors into surge protectors.

Surge protection is measured in Joules and protection is cumulative. One big hit may destroy all protection as can a series of smaller hits.

FYI:

Lifewire - Surge protectors

You can easily find other similar links to learn more about surge protection.
I have seen the rm750e/850e as well as ASUS TUF have built in surge protectors? Overvolt protectors and so on. I like to have all my units into a protector, not from Lightning strike but if/when power goes off and it comes back it could cause a spike i have heard, so want to keep it safe but i dont want to plug it into surge if it already have one.

I bet you know what you talking about no doubt, so the one that claim to have protectors built in is also safe to connect to my separate surge protector power stripe? And not count as a protector into another protector? :)
 

Ralston18

Titan
Moderator
Make and model PSU?

What is that "protector": make and model? From the context I believe you are referring to a UPS.

I have a UPS (Uninterruptable Power Supply) into which I plug only my main computer (and thus its' PSU) and monitor.

Objective being to just have a few minutes time to gracefully shutdown if power goes out or starts surging up and down.

As for "claims" there may well be some sort of surge protection but how effective and meaningful that protection actually is requires much more information and probably some research. Including a close look at the fine print in production documentation and warranties.

Overall, I would not deem plugging my computer (and its' PSU -surge protected or not?) into a UPS or a basic surge protector as daisy chained surge protectors.

However plugging a UPS into a surge protector or vice versa should not be done and probably is mentioned and caution/warned against somewhere in the documentation.

Where things really go astray is when someone pulls out two or three powerbar/surge protectors from a big box store discount bin and then plugs them all together to serve computers, monitors, printers, speakers,TVs, game boxes, etc...

Likely to create some sort of loop as well. Not good either.
 

Kellerman88

Reputable
Jun 30, 2019
106
6
4,585
Make and model PSU?

What is that "protector": make and model? From the context I believe you are referring to a UPS.

I have a UPS (Uninterruptable Power Supply) into which I plug only my main computer (and thus its' PSU) and monitor.

Objective being to just have a few minutes time to gracefully shutdown if power goes out or starts surging up and down.

As for "claims" there may well be some sort of surge protection but how effective and meaningful that protection actually is requires much more information and probably some research. Including a close look at the fine print in production documentation and warranties.

Overall, I would not deem plugging my computer (and its' PSU -surge protected or not?) into a UPS or a basic surge protector as daisy chained surge protectors.

However plugging a UPS into a surge protector or vice versa should not be done and probably is mentioned and caution/warned against somewhere in the documentation.

Where things really go astray is when someone pulls out two or three powerbar/surge protectors from a big box store discount bin and then plugs them all together to serve computers, monitors, printers, speakers,TVs, game boxes, etc...

Likely to create some sort of loop as well. Not good either.
My english isnt the best but i refere to a psu not ups, psu from corsair the rm series, and for example ASUS TUF serie have also so called built in overvolt protection. What i wanted to know if this type of "protectors" could be a bad idea to plug into a surge protector.
After what you let me know it sounds safe to plug in every model of psu to a surge protector before it reach the wall outlet. I wanted to make sure i didnt double connect protectors into protectors to not do anything wrong.
 
Get a surge protector. Not only because it'll act as a power strip (usually) so you can plug in other devices, in the case of a power event, what do you want to take the brunt of the event: the cheaper surge protector or the more expensive power supply?

For reference, I have a $30 USD surge protector that I plug my computer into. A power supply replacement would cost $100 USD. I think I would rather replace the $30 part over the $100 one.
 
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Ralston18

Titan
Moderator
Agree with @hotaru.hino

Wall outlet ===> Surge Protector ===> PSU and other devices.

Even if the PSU has some sort of built in protections I would not consider the PSU as a surge protector.

Depending on the power situation where you live a good quality (but more expensive) surge protector should be used.

Again, protection (Joules) is cummulative and there could easily be a time where the surge protector has absorbed its' limit in energy and the next hit goes to the PSU and host computer.
 
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