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geekhack Community => Off Topic => Topic started by: tp4tissue on Mon, 13 April 2015, 20:19:52

Title: What does this Mean ?? EE halp...
Post by: tp4tissue on Mon, 13 April 2015, 20:19:52
Line to Neutral :  122.0v - 122.2v

Line to Ground : 122.0v- 122.1v


Is ... Is this good ?


(http://www.cute-factor.com/images/smilies/onion/efb50fe2.gif)
Title: Re: What does this Mean ?? EE halp...
Post by: ghostjuggernaut on Mon, 13 April 2015, 20:28:21
Not sure what you are measuring, but it looks fine to me.
Title: Re: What does this Mean ?? EE halp...
Post by: nubbinator on Mon, 13 April 2015, 20:28:37
Lick it then get back to us.
Title: Re: What does this Mean ?? EE halp...
Post by: tp4tissue on Mon, 13 April 2015, 20:29:51
Lick it then get back to us.

Y you try Kill Tp4

(http://www.cute-factor.com/images/smilies/onion/215ad82f.gif)
Title: Re: What does this Mean ?? EE halp...
Post by: tp4tissue on Mon, 13 April 2015, 20:31:50
Not sure what you are measuring, but it looks fine to me.

I wanted to test if my ground is working right..  but I'm not sure what the difference in potential indicates.

I know my ground is hooked up to the water main in the basement...


ALSO......  since the lights didn't go out,   DOES that mean I don't have ground fault protection?
Title: Re: What does this Mean ?? EE halp...
Post by: nubbinator on Mon, 13 April 2015, 20:32:34
Well, how else are you going to tell if it's live and good?  And we all know it's the amps that kill you.  That many volts will just tingle, it won't do anything.
Title: Re: What does this Mean ?? EE halp...
Post by: Novus on Mon, 13 April 2015, 20:33:11


Tp4 reveals mysteries... grants deep perspective... builds the foundation of TRUTH...

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(http://textemoticons.net/wp-content/uploads/2012/12/014.gif)

Title: Re: What does this Mean ?? EE halp...
Post by: tp4tissue on Mon, 13 April 2015, 20:34:51


Tp4 reveals mysteries... grants deep perspective... builds the foundation of TRUTH...

Show Image
(http://textemoticons.net/wp-content/uploads/2012/12/014.gif)


Whoever said those things is truly honest and most wise..

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Title: Re: What does this Mean ?? EE halp...
Post by: ghostjuggernaut on Mon, 13 April 2015, 20:38:09
To test your ground, you would want to go ground to ground.  In terms of ground fault, unless it is a GFCI outlet, you won't have protection.
Title: Re: What does this Mean ?? EE halp...
Post by: tp4tissue on Mon, 13 April 2015, 20:40:42
To test your ground, you would want to go ground to ground.  In terms of ground fault, unless it is a GFCI outlet, you won't have protection.

Hrrrmmm.... so You mean I need a "very" long cord at 2 locations where I suspect different potentials?
Title: Re: What does this Mean ?? EE halp...
Post by: ghostjuggernaut on Mon, 13 April 2015, 20:42:34
Well, ground is ground.  So if you are measuring from ground to ground, the potential should be zero.  You would also need to be measuring resistance, not voltage.
Title: Re: What does this Mean ?? EE halp...
Post by: tp4tissue on Mon, 13 April 2015, 20:43:07
Well, ground is ground.  So if you are measuring from ground to ground, the potential should be zero.  You would also need to be measuring resistance, not voltage.

Where from G2G..   same outlet? or from outlet to ground cable in basement
Title: Re: What does this Mean ?? EE halp...
Post by: ghostjuggernaut on Mon, 13 April 2015, 20:45:56
The easiest would be to test to separate outlets.  The best way to check it though, would be to go from the suspect outlet, to the main ground connection.  If you know how the wiring is laid out in your house, you could go outlet to outlet until you reach the main grounding point.
Title: Re: What does this Mean ?? EE halp...
Post by: tp4tissue on Mon, 13 April 2015, 20:47:28
The easiest would be to test to separate outlets.  The best way to check it though, would be to go from the suspect outlet, to the main ground connection.  If you know how the wiring is laid out in your house, you could go outlet to outlet until you reach the main grounding point.

I know my main grounding point.. it's at the water main.. there's a shunt from the breakerbox to that main pipe

So ur saying.. I want to measure, "resistance"  from my suspect outlet,  TO the water pipe in the basement?
Title: Re: What does this Mean ?? EE halp...
Post by: ghostjuggernaut on Mon, 13 April 2015, 20:50:26
The easiest would be to test to separate outlets.  The best way to check it though, would be to go from the suspect outlet, to the main ground connection.  If you know how the wiring is laid out in your house, you could go outlet to outlet until you reach the main grounding point.

I know my main grounding point.. it's at the water main.. there's a shunt from the breakerbox to that main pipe

So ur saying.. I want to measure, "resistance"  from my suspect outlet,  TO the water pipe in the basement?

Yup.  You could do it at the shunt as well.  As long as there is ~0 Ω, then the ground is good.
Title: Re: What does this Mean ?? EE halp...
Post by: tp4tissue on Mon, 13 April 2015, 20:53:21
The easiest would be to test to separate outlets.  The best way to check it though, would be to go from the suspect outlet, to the main ground connection.  If you know how the wiring is laid out in your house, you could go outlet to outlet until you reach the main grounding point.

I know my main grounding point.. it's at the water main.. there's a shunt from the breakerbox to that main pipe

So ur saying.. I want to measure, "resistance"  from my suspect outlet,  TO the water pipe in the basement?

Yup.  You could do it at the shunt as well.  As long as there is ~0 Ω, then the ground is good.

(http://www.msgking.com/wp-content/uploads/2010/03/onion-avatar087.gif)

Thx for the nfo GhostJug..
Title: Re: What does this Mean ?? EE halp...
Post by: ghostjuggernaut on Mon, 13 April 2015, 20:55:07
The easiest would be to test to separate outlets.  The best way to check it though, would be to go from the suspect outlet, to the main ground connection.  If you know how the wiring is laid out in your house, you could go outlet to outlet until you reach the main grounding point.

I know my main grounding point.. it's at the water main.. there's a shunt from the breakerbox to that main pipe

So ur saying.. I want to measure, "resistance"  from my suspect outlet,  TO the water pipe in the basement?

Yup.  You could do it at the shunt as well.  As long as there is ~0 Ω, then the ground is good.

Show Image
(http://www.msgking.com/wp-content/uploads/2010/03/onion-avatar087.gif)


Thx for the nfo GhostJug..

NP, hope you get it all sorted out.
Title: Re: What does this Mean ?? EE halp...
Post by: Novus on Mon, 13 April 2015, 20:58:40
The easiest would be to test to separate outlets.  The best way to check it though, would be to go from the suspect outlet, to the main ground connection.  If you know how the wiring is laid out in your house, you could go outlet to outlet until you reach the main grounding point.

I know my main grounding point.. it's at the water main.. there's a shunt from the breakerbox to that main pipe

So ur saying.. I want to measure, "resistance"  from my suspect outlet,  TO the water pipe in the basement?

Yup.  You could do it at the shunt as well.  As long as there is ~0 Ω, then the ground is good.

Show Image
(http://www.msgking.com/wp-content/uploads/2010/03/onion-avatar087.gif)


Thx for the nfo GhostJug..

You buy him cowpiss and ramen right now.