Problem with Grounding/Earth Wire

[Buzzed]

Hi everyone and warm wishes for a super 2013.

I have some questions regarding the grounding wire.

1. We have about 10 plug bases/points around the house upstairs and down. I used a tester (a neon buld screwdriver) and checked the ground socket in each of the plug-bases.

Other than in three or four, the tester bulb lit up in all others. While the ground wire in a few plug bases lit up blight a few were faint.

I observed that the tester light lit up bright when a ceiling fan nearby that plug-base was switched on.

The tester didn't light up at all in a few plug bases.

2. I have a desktop with a branded power supply (Cooler Master 450W). I noticed that when the power supply is connected to the plug base (while the computer is stil off), the tester lights up when it is held against any part of the computer metal casing. However there's no electric shock when I touch it by hand. Only the occasional short tingle/buzz. It's very faint though.

While the computer power supply is connected ( whether the computer is switched on or not), the current that the tester detects on the casing is also present in the grounding wire when I point the tester to the plug base.

Why could this be happening?

The earth wire is firmly grounded. All plug bases have three sockets for the live, neutral and ground wires. All electrical plugs also have three pins.

So why would the tested detect a current in the PC casing if the grounding is there?

You advice would be much obliged.

With kind regards,
Bezzed

 

[MDJ]

Here we Go again haha

welcome to the forum Bezzed

 

[telectrix]

partly because these mickey mouse neon testers are fit only for scratching your arse (or --- in america). bin it and get the installation properly tested.

 

[Octopus]

Yawn.... But he could be in Sri Lanka

 

[wade88]

My favourite part is - "However there's no electric shock when I touch it by hand"

We all know there is no better way, when a tester of some sort (albeit a load of junk neon driver) shows a voltage, to double check it by touching it. But remember all you overly curious, soon to be dead electricity adventurers, if you insist of stroking a live voltage, always use the back of your hand so you dont grip the conductive surface, alternatively use your tongue to throw a little moisture in the mix for a truly fantastic result...


P.s, this is post is NOT genuine advice, disclaimer notice attached.

 

[MDJ]

Could be dave back under a new username :rofl:

 

[wade88]

Alternatively, and i could be absolutely miles away with this suggestion, the buzzing, or 'voltage' you are experiencing within the casing of your PC, could be some sort of static capacitance that has not dispersed.

 

[44ALLAN]

My favourite part is - "However there's no electric shock when I touch it by hand"

We all know there is no better way, when a tester of some sort (albeit a load of junk neon driver) shows a voltage, to double check it by touching it. But remember all you overly curious, soon to be dead electricity adventurers, if you insist of stroking a live voltage, always use the back of your hand so you dont grip the conductive surface, alternatively use your tongue to throw a little moisture in the mix for a truly fantastic result...

P.s, this is post is NOT genuine advice, disclaimer notice attached.

'the tester lights up when it is held against any part of the computer metal casing. However there's no electric shock when I touch it by hand. Only the occasional short tingle/buzz. It's very faint though'.

He's been lucky Wade................I always get a belt when I touch something I know is 'Live' lmao wtf !!!!!

 

[Brightspark2]

It isnt detecting current...it's just lieing to you, dont use it too detect anything and forget anything that you wrote.

Its just a screwdriver with a light in that thinks it's better than other screwdrivers, dont take it on, it lies...

 

[GLENNSPARK]

Hi everyone and warm wishes for a super 2013.

I have some questions regarding the grounding wire.

1. We have about 10 plug bases/points around the house upstairs and down. I used a tester (a neon buld screwdriver) and checked the ground socket in each of the plug-bases.

Other than in three or four, the tester bulb lit up in all others. While the ground wire in a few plug bases lit up blight a few were faint.

I observed that the tester light lit up bright when a ceiling fan nearby that plug-base was switched on.

The tester didn't light up at all in a few plug bases.

2. I have a desktop with a branded power supply (Cooler Master 450W). I noticed that when the power supply is connected to the plug base (while the computer is stil off), the tester lights up when it is held against any part of the computer metal casing. However there's no electric shock when I touch it by hand. Only the occasional short tingle/buzz. It's very faint though.

While the computer power supply is connected ( whether the computer is switched on or not), the current that the tester detects on the casing is also present in the grounding wire when I point the tester to the plug base.

Why could this be happening?

The earth wire is firmly grounded. All plug bases have three sockets for the live, neutral and ground wires. All electrical plugs also have three pins.

So why would the tested detect a current in the PC casing if the grounding is there?

You advice would be much obliged.

With kind regards,
Bezzed

oh for christs sake....

 

[Ian74]

You sure it's not a microwave and the screwdriver isn't one of them leak detector things?

 

[Golden_Boy]

Methinks the new years batch has hatched

 

[GLENNSPARK]

Methinks the new years batch has hatched

View attachment 16537

well it wont work on me...i`m not unwanted....

 

[markc123]

Ahh the Neon screwdriver - the most reliable piece of kit one can need.

I'm beginning to think all these threads that are started are completley made up to get a reaction. I mean the OP contradicts himself....he can spell properly which suggest not an idiot, but then he uses a neon! doh!

OP get a spark's in and sort it out properly with the correct test procedure's. (We have super-duper neon drivers which are a slightly better to test with.)

:welcome: to the forum though buddy! all the best for 2013 and don't be touching anything else you presume is live

 

[ipf]

Yawn.... But he could be in Sri Lanka

With the OP being in Sri Lanka, I wouldn't recommend a local forum member. God knows what standards they have.