I'm a youtube frog. Don't interact much to videos regardless of how it made me feel. However, I cannot ignore the poetic nature of "don't connect yourself to an electrical ground, electricity doesn't respect you" it made me laugh out loud literally and honestly refreshed my mental state after cramming videos. Cheers Professor!
This was my question as well. Thank you for asking. The presenter says it backwards in the video - that the power supply should be rated for 425 watts if your requirements are 850.
Can you specify what you mean by an electrical ground? Is it just the difference between attaching yourself to an unpainted metal surface and attaching yourself to the ground in an outlet?
When I'm referring to the electrical ground, I'm specifically referring to the shared building ground connection used by the building's electrical systems and connected to a grounding rod in the earth. A metal surface that isn't connected to earth would best be described as a "common" return path, although we often colloquially refer to common as "ground." To simplify the warning in my video, don't ever connect yourself to the grounding wire in an outlet.
@@professormesser Good advice, I remember a video TH-camr (Thomas Nagy) done some time back, when he was working in a school doing an electrical installation. He was testing the phases, and found a leak which was feeding into the CPC (ground) with a fair few amps/volts, it would have seriously injured you. Just assume all wires are live until proven otherwise.
I was confused by the bullet "Do not connect yourself to an electrical ground." I was trained to repair radios in the military and I was taught to wear a wrist strap connected to electrical ground while handling any circuit card. Can you give more detailed explanation about this warning about danger from electrical ground?
Never never never never connect your body to any source that has the potential to be energized. It can kill you. Connecting to an electrical ground has nothing to do with preventing electrostatic discharge.
@@professormesser I thought more about it and realized the danger you were talking about. Thanks for taking the time to reply and thank you very much for making these videos.
I think what he means is that you should not try to connect the wrist strap to the Ground of a Power socket (on european sockets easily acceable as it is just two unisolated metal claws ) using a wrist strap is highly recommended, but you should better connect it to something like a water pipe or an unpainted part of a Radiator
The real answer here is that electrostatic discharge doesn’t really kill computer components (at least nowadays I don’t know about in the past) there are videos of people brutally shocking off the shelf parts with huge zaps over and over again and they don’t tend to die.
@@oliverfenn8489 it really depends on the component and the circuit if placed. I’ve intentionally damaged parts in testing and had to deal with the unintentional damage caused by others who neglected proper ESD precautions.
So the power supply converts the AC into 3.3V DC, 5.5V DC and 12V DC right? I noticed that 3.3 and 12V DC gets used exactly but it shows 5.5V DC being used as 5V DC, is their a reason for that?
I'm a youtube frog. Don't interact much to videos regardless of how it made me feel.
However, I cannot ignore the poetic nature of "don't connect yourself to an electrical ground, electricity doesn't respect you" it made me laugh out loud literally and honestly refreshed my mental state after cramming videos. Cheers Professor!
This is an excellent teaching aid for my Comptia A+ test, found it to be extremely useful!!!!!!
I'm on video 50 of 74 in two days... I am determined to get a new job
Edit: passed core 1
did you take notes on the videos or just watch them? any other resources?
This video has also played a great part of my professional life in IT as well !!!
For the exam, do we need to know the ratings i.e. Platinum, Gold, Silver, Bronze?
is there a reason why you have the rhetian railway in the background? Love it! All the best from switzerland!
You are a gentleman and a scholar my kind sir. Thank you for teaching us!
DO YOU HAVE STUDY GROUPS? I FIND THIS SECTION HARDER THAN OTHERS.
what exactly did you mean by 50% capacity? thanks :)
If you are using 425 watts and using an 850 watt power supply, you're at 50% power supply capacity.
@@professormesser gotcha thanks!
This was my question as well. Thank you for asking. The presenter says it backwards in the video - that the power supply should be rated for 425 watts if your requirements are 850.
@@sageRJRJ sure no problems mister RG
Can you specify what you mean by an electrical ground? Is it just the difference between attaching yourself to an unpainted metal surface and attaching yourself to the ground in an outlet?
When I'm referring to the electrical ground, I'm specifically referring to the shared building ground connection used by the building's electrical systems and connected to a grounding rod in the earth. A metal surface that isn't connected to earth would best be described as a "common" return path, although we often colloquially refer to common as "ground."
To simplify the warning in my video, don't ever connect yourself to the grounding wire in an outlet.
@@professormesser Good advice, I remember a video TH-camr (Thomas Nagy) done some time back, when he was working in a school doing an electrical installation. He was testing the phases, and found a leak which was feeding into the CPC (ground) with a fair few amps/volts, it would have seriously injured you. Just assume all wires are live until proven otherwise.
How does the +/- Voltage translate to motherboard connections? I imagine all the connections are at level with the ground connection.
I'm sure there's pins in the motherboard
I was confused by the bullet "Do not connect yourself to an electrical ground." I was trained to repair radios in the military and I was taught to wear a wrist strap connected to electrical ground while handling any circuit card. Can you give more detailed explanation about this warning about danger from electrical ground?
Never never never never connect your body to any source that has the potential to be energized. It can kill you. Connecting to an electrical ground has nothing to do with preventing electrostatic discharge.
@@professormesser I thought more about it and realized the danger you were talking about. Thanks for taking the time to reply and thank you very much for making these videos.
I think what he means is that you should not try to connect the wrist strap to the Ground of a Power socket (on european sockets easily acceable as it is just two unisolated metal claws )
using a wrist strap is highly recommended, but you should better connect it to something like a water pipe or an unpainted part of a Radiator
The real answer here is that electrostatic discharge doesn’t really kill computer components (at least nowadays I don’t know about in the past) there are videos of people brutally shocking off the shelf parts with huge zaps over and over again and they don’t tend to die.
@@oliverfenn8489 it really depends on the component and the circuit if placed. I’ve intentionally damaged parts in testing and had to deal with the unintentional damage caused by others who neglected proper ESD precautions.
I’ve heard of so many scary stories of people messing around with a power supply. Always be careful like the Professor says!
So the power supply converts the AC into 3.3V DC, 5.5V DC and 12V DC right? I noticed that 3.3 and 12V DC gets used exactly but it shows 5.5V DC being used as 5V DC, is their a reason for that?
Thank you proff!