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I have two hot wires and two neutrul wires coming from the box. how do I hook them up so everything works

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Open following link to see specific wiring diagram:

There is only one Hot wire inside each household 120volt single-phase wall or ceiling box.
Unless wiring is off-code.
Hot wire is usually the black wire coming from circuit breaker.
White wire that arrives inside same cable with Hot black is the Neutral wire.

The other black and white wires evidently go to light fixture.
Which wire is Hot?
Separate black wires, turn power ON, tape tester leads to wood sticks, test each black wire to bare ground wire. Tester lights up on hot wire. Or separate black wires and use non-contact voltage tester.

Posted on Nov 10, 2012


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Erstens verzeih mir bitte wegen Schreibfehler. Meine Muttersprache ist nicht Deutsch.

Jetzt zur loesung:

1. Auf der support-seite von HP suche und lade herunter die (sehr grosse) Datei welche die FULL drivers und applications fuer dein Drucker beinhaltet;

2. Starte die gerade heruntergeladene Datei bis zum Punkt wo es anbietet die software zu installieren;

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4. Jetzt finde den Ordner wo alle diese Dateien gespeichert wurden. In diesem Ordner soll der Ordner "setup\hpupdate" sein. (der Ordner musste in TMP oder TEMP sein - am besten verwende die option SUCHEN;

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6. In Windows Systemsteuerung, programme entfernen, werden wir das programm"HP Update" entfernen. Kann sein dass mache Fehlermeldungen dabei entstehen, aber das ist normal unter diese Umstaenden

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Hoffe es war hilfreich

Beste Gruesse!

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I just bought a switch to control both fan speed and light control (dual switch) i hooked it up every thing worked fine. then to realize that the outlets that follow dont work. just as a clue on the...

The key seems to be that you changed wiring in the ceiling box.

I suggest you make a drawing of the wires before and after. Track the route that the Hot wire takes.

The key question is this: Does Hot wire from breaker box arrive in the ceiling box first? Or does it arrive in wall box first?

I think Hot from breaker arrives in wall box first. And from there Hot wire goes to ceiling box ... and from ceiling box the hot wire goes to other plugs in room. If this is true, you will be one wire short for installing fan control switch.

I always make a drawing of existing wires before starting, so I can put it back the way it was. It sounds like you got a good handle on which wire goes where.

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