I have one of this 24V 5A Switching Power Supply and want to ground it but I don't know how to do it because none of wall-socks at my home have ground(they just have L and N). an image of my supply:
But I didn't say where is the supply earth connection.See the circled symbol between N and -V, that is the supply earth connection.
Why?...Do not connect it to the Neutral.
How? If he has no earth grounding system in his house and no common line connections to any type of earth ground which was a common design of the old two wire home wiring systems there is no way for his body to complete a circuit.If you connect the GND to Neutral at the supply, and flip over the plug at the wall, the Line now is connected to the external case. The supply will work fine, but touching the case can kill you.
And you are willing to risk someone's life on that statement?How? If he has no earth grounding system in his house and no common line connections to any type of earth ground which was a common design of the old two wire home wiring systems there is no way for his body to complete a circuit.
I'm always willing to risk other peoples anything for the betterment of science! (Or personal entertainment.)And you are willing to risk someone's life on that statement?
I'd seriously consider checking for continuity between the L and Gnd terminals with an MM, just in case... of course I'm 99.999% sure that there won't be any, since that looks like a very formal, professionally made power supply... but I'd just check it anyway, just in case... a 0.001% case, to be precise.Rifaa - there are millions of homes in the US that still have 2-wire AC outlets left over from when they were built.
booboo - Since you have non-polarized AC outlets, either Line or Neutral can be on either wire depending on how it is plugged in. If you connect the GND to Neutral at the supply, and flip over the plug at the wall, the Line now is connected to the external case. The supply will work fine, but touching the case can kill you.
ak
There are almost certainly safety issues with leaving out the earth connection.The supply will work fine without an earth ground connection, but it might radiate more noise. The earth ground connection goes to the supply case, and is there for safety reasons. Do not connect it to the Neutral.
ak
'Professionally' made in China?. since that looks like a very formal, professionally made power supply....
Oh my... well, yes of course you're right... there are chinese products, and then there are Chinese products.'Professionally' made in China?
On one site I am moderator on, a company was advertising their Chinese made power supply units that had 120v plugs to source various switched 120v AC devices, the problem was they were the type that is used on PC power supplies as a male receptacle, in this case they were outlets!
They pulled them when I reported it.
Max.
by Jake Hertz
by Aaron Carman
by Jake Hertz