First plug kicks a breaker

[telo.edgars]

I just bought a PC. It is second hand.
The thing is that first time I plug in extension cord with PC and monitor in there it blew a fuse in my room.
Then I plugged only monitor in socket and it was ok.
After that I plugged in the PC alone and it blew the fuse, I flipped it up back again then put my PC and monitor in extension cord and plugged it in the wall socket and it didn't blow a thing.

That was a 10A fuse as far as i know.

OS is Windows 10 64-bit

The specs are as follows:
ASUS strix z270H motherboard
i5-7600k running at base speed
Corsair vengeance 16GB 3000MHz
MSI AERO 1080
750W Power supply chieftec 80+bronze

And a BenqXL2730Z on display port.

Previous owner had used it for 8 months and went on to live in different country so I got it fairly cheap.

Should I be worried about PSU (or at all for that matter) , should I buy a new one, all parts still have warranty for up to 2 years. Can it cause more serious damage?

P.S. edit i fiddled around in the case and connected an HDD and a case fan

P.S.S Im from Latvia (Europe) using 220V~250V line

Thanks!

 

[mjslakeridge]

You need to figure out what else is connected to the circuit that the PC and monitor were tripping the breaker. Perhaps the circuit was already nearing it's capacity and the PC and or monitor pushed it over the limit. Are you using a heavy gauge (thick) extension cord? A 10Amp breaker would be somewhat rare (at least in the U.S.) Most residential circuits for general use are 15 Amps, which would safely handle a total of 1,800 Watts load. 15 amps x 120 volts = 1,800 Watts. If indeed the circuit is only 10 Amps then a limit of 1,200 Watts for that circuit. If you are in Europe or somewhere that uses 240Volt wiring, the calculations would of course be different.

 

[Barty1884]

Chieftec units are generally junk, so I'd initially look to it if you can narrow it down to the system itself.

As mentioned, there's likely much more on the circuit than just the PC.

I assume you don't have an alternate to test with?

Even if it's not the PSU, I'd look to replace it with something of greater quality regardless.



Breadboard the rig, outside of the case (CPU, MB, cooler, 1xDIMM & relevant PSU connectors). That should help rule out shorts etc inside the case, along with 'basic' problems in the barebones setup.

 

[telo.edgars]

You need to figure out what else is connected to the circuit that the PC and monitor were tripping the breaker. Perhaps the circuit was already nearing it's capacity and the PC and or monitor pushed it over the limit. Are you using a heavy gauge (thick) extension cord? A 10Amp breaker would be somewhat rare (at least in the U.S.) Most residential circuits for general use are 15 Amps, which would safely handle a total of 1,800 Watts load. 15 amps x 120 volts = 1,800 Watts. If indeed the circuit is only 10 Amps then a limit of 1,200 Watts for that circuit. If you are in Europe or somewhere that uses 240Volt wiring, the calculations would of course be different.

Im using something like this only without the switch

Wouldn't it keep on kicking the breaker if I were to plug it back in if it was near the limit, if just unplugged the PC and nothing more in the circuit?

 

[jojesa]

Overloading is the most common reason a breaker trip.
For example, you have a 10 amp circuit with 15 amps worth of electricity running through that circuit (TV, cable box, PC, AC, etc) The circuit breaker will trip to prevent overheating.
When the switch that tripped is OFF, before you go and flip the switch back on, check what other electrical devices are also connected to that 10 Amp breaker. Turn off the other devices on the circuit to reduce the electrical load and see if it trips just with the PC on.

Chieftec units are generally junk.

I doubt the PSU will cause this issue. By the way Chieftec are not junk. They might not have a good presence in North America but in Europe and South America they are know to work well. I am not saying they are great or excellent but they are good.
Maybe you are confusing it with Chiefmax, which are quite dangerous.

 

[Barty1884]

By the way Chieftec are not junk. They might not have a good presence in North America but in Europe and South America they are know to work well. I am not saying they are great or excellent but they are good.
Maybe you are confusing it with Chiefmax, which are quite dangerous.

Chieftec units are generally junk,

For the most part, they're either CWT or Sirfa built and, anything by those manufacturers (again, generally, not definitively) that can be sold at the pricepoint Chieftec meets, are not going to be "good".

They have a couple of Delta units which are somewhere in the ok-decent-good range.

So I'm saying they don't have an "ok" model somewhere in their product stack, but generally speaking no, they are not "good".

Typically, you have to make some educated guesses on specific PSUs from their model numbers, teardowns & other products the OEM built for other vendors using the same platform, that do get reviewed commonly (Corsair etc). Too frequently you'll find the same platform is used by those true 'junk' brands.

While Chieftec units are not usually reviewed in North America, you can find some here and use Google translate as needed..
https://www.techpowerup.com/reviewdb/PSUs/Chieftec/

From what I can find, even their better offerings can't do their rated output.