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robert22

01:36PM | 12/22/06
Member Since: 12/21/06
2 lifetime posts
Bvelectrical
I have remodled the bath. and finishing up with new fixtures, outlets and swithches. I THINK I put all the wires back in the same locations on the new outlet but when I put the power back on everything but one outlet (the only one in the room) did not. I have A tester that reads "rev.polarity" two nutral and two hot. How did I screw this up?

Billhart

03:06PM | 12/22/06
Member Since: 04/25/05
1916 lifetime posts
The white wire goes on the Silver colored terminal. The black goes on the Gold or Brass colored terminal.

And of course the bare or green ground goes on the green screw.

If that does not work, you need to keep checking upstream to find where they have it backwards.

robert22

03:30PM | 12/22/06
Member Since: 12/21/06
2 lifetime posts
yes I do have the the 2 white to the silver and the 2 blacke to the gold. (but here's the thing) the outlet worked just fine before I changed it. "Strandge I would say". is this an easy fix or shoud I go ahead and call someone to come out?

Billhart

04:56PM | 12/22/06
Member Since: 04/25/05
1916 lifetime posts
The 3 light testers can give false readings.

Assume that it was correct before and you do not open up any of the other boxes (where the polarity might have gotten reversed) then it indicates that you have other problems with the wiring.

So you might want to get a pro to look at it.

joed

05:09AM | 12/26/06
Member Since: 09/17/02
524 lifetime posts
The receptacle will work just fine with the reverse polarity. However it is unsafe. If the black are on the gold screw then the power cable feeding the receptacle is reversed at somewhere upstream.

Techgromit

06:04AM | 12/28/06
Member Since: 12/27/06
14 lifetime posts
If you replaced a standard outlet with a GFI and the circuit has reversed polarity, the GFI will not work correctly, if at all. What kind of outlet was there before, and what did you replace it with?

Billhart

06:49AM | 12/28/06
Member Since: 04/25/05
1916 lifetime posts
First reverse polarity is when the hot and neutral wires are reversed.

A GFCI WILL NOT DETECT THIS.

Here are a series of test I posted in another forum about this.

//Test proceedure;

CONNECTIONS

A: Connect power source Hot to GFCI Hot, Neutral to Neutral, and EGC

B: Connect power source Hot to GFCI Hot, Neutral to Neutral, NO EGC

C: Connect power source Hot to GFCI Neutral, Power Neutral to GFCI Hot, and EGC.

D: Connect power source Hot to GFCI Neutral, Power Neutral to GFCI Hot, NO EGC.

TEST ACTIONS - monitor both GFCI buttons and test lamp plugged into GFCI

1: Verify test button will trip and unit will reset.

2: Verify unit will trip with simulated fault (10k resistor) from GFCI receptacle HOT to EGC and will reset.

3: Verify unit will trip with simulated fault from GFCI receptacle neutral to supply HOT and will reset.

UUT #1 Leviton GFCI RFS, est age 1992, before the 2003 upgrade of GFCI requirements.

A.1 - passed

A.2 - passed

A.3 - passed

B.1 - passed

B.2 - passed

B.3 - passed

C.1 - passed

C.2 - passed

C.3 - passed

D.1 - passed

D.2 - passed

D.3 - passed

UUT #2 Cooper XGF20V

NS from Lowes. The box has "Meets New UL943 Requiremnts" and the side of the box has "New Key Safety feautre: Detects initial LINE/LOAD miswiring or failure of GFCI electronis, and prevents RESET of unit if either occurs."

This SOUNDS like the requirements for the new (July 28, 06) version of UL 942. However I tested the unit and with the load/line reversed the faceplate is still hot. But this is what UL says " GFCI will deny power to the receptacle face if it is miswired."

So I have emailed Cooper to see if this is a "new" version or not.

A.1 - passed

A.2 - passed

A.3 - passed

B.1 - passed

B.2 - passed

B.3 - passed

C.1 - passed

C.2 - passed

C.3 - passed

D.1 - passed

D.2 - passed

D.3 - passed

From this it is clear that

A) The GFCI will work out a ground connection.

B) The GFCI work the same with hot and neutral reversed as it does with them wired normally.

//

This is different from a GFCI being wired backwards. That is where the power is connected to the LOAD terminals.

With current production GFCI's they will not reset and the receptacles will be dead. With ones made between 2003 and July 2006 the also won't reset, but the recetpacle connections will be active.

In any case the 3 light tester will either show normal or they will all be off. Not show reversed connections.
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