Ask Experts Questions for FREE Help !
Ask
    dshrap's Avatar
    dshrap Posts: 1, Reputation: 1
    New Member
     
    #1

    May 4, 2009, 06:36 AM
    Hot neutral throughout one branch circuit
    I just moved into a late 60s house with aluminum wiring. Recently, the lights, TV, etc. flickered throughout the house, then everything in the family room went off. The power was out in other parts of the house long enough to reset all the digital clocks. No breakers tripped. Now power is okay everywhere except the family room, which is all on one circuit. Throughout that circuit, I now find that the neutral wire is hot. I have 120v between the hot and ground, 120v between the neutral and ground, and nothing between the hot and neutral. What happened? I can't think how this could have happened without tripping a breaker. If the breaker is faulty, why hasn't the house burned down already?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #2

    May 4, 2009, 06:46 AM

    If you have no power to the fixtures in this room and both the hot and neutral to ground show 120 you have a short between the black and white wires but that should have tripped the breaker. This is perplexing but I will try to picture othre scenarios and get back to you.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
     
    #3

    May 4, 2009, 07:47 AM

    First: Neutral is white
    Hot is black

    Neutral goes to the whitish screw
    Black goes to the brass screw

    Newtral; goes to the long socket of the outlet
    Hot goes to the narrow one.

    120 - Hot to Neutral
    120 - Hot to ground
    ~0 V - Ground to neutral

    So, make sure the polarity is correct based on the above.

    You seem to be a candidate for AMP/ Tyco Electronics system for upgrade. It must be used by trained contractors. The contractor has to rent the tool after showing proper documantation.

    Aluminum needs a special anti-oxident paste to be used on all connections.

    AMP's system attaches a small copper pigtail to all the ends. I think you're a candidate for this.

    Your other problem.

    Re-verify the polarity or get a <$5.00 outlet tester.

    I'll bet that a mains connection is loose. It may need to be removed, pase applied and re-attached.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #4

    May 4, 2009, 07:50 AM

    KISS anu thoughts on why 120 on the neutral isn't tripping the breaker?

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

240v GFI trips when 120v branch circuit is activated. [ 2 Answers ]

I'm having a problem with my Spa GFI/disconnect. I have been using my spa for several years wired as it currently is with no problem. A while ago I decided to take advantage of the provided 15 amp branch circuit that is built into the disconnect/GFI box. I just wanted to have a outdoor outlet for...

Identifing the first outlet in a branch circuit [ 5 Answers ]

Any idea on how to identify the first outlet on a branch circuit. I need to install a GFGI outlet and in order to protect the rest of the outlets in the branch I need to put the GFGI on the first one. Also is there a minimum size outlet box to use when installing a GFGI outlet? Thanks, J:confused:

Wiring multiple recessed light through branch circuit [ 7 Answers ]

I wired (11) recessed 4" incandescent cans in series with #12AWG on a 20amp circuit. After wiring was complete I noticed there was a note on the can that said "maximum of (8) 12AWG through branch circuit conductors" The maximum load on this circuit is approximately 12 amps. What is the...

Shared neutral ~ 1 GFI circuit and one non [ 1 Answers ]

Hello, I have an existing 12/3 NMB in a jbox in the kitchen. Can I use one circuit for a GFCI Countertop circuit and one circuit for a dedicated microwave circuit that does not need GFI protection and share the neutral? Thank you!

Maximum load allowed on a branch circuit used for fixed resistance heating? [ 1 Answers ]

What is the maximum load allowed (%) on a branch circuit used solely for fixed resistance heating?


View more questions Search