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Posted by lee houston on August 1, 2006, 5:52 pm
> Our house has a garage was added on later. The garage and house share
> a roof with a breezeway between them. When we moved in, I noticed a
> coil of wire in the rafters of the breezeway. Waving my detector I
> determined that it was hot. At the main panel it was connected to a 50
> amp breaker. This breaker is now off, taped off, and labeled.
>
> The garage is not wired.
>
> The wire itself appears to be the stuff that runs from the house to the
> pole: Two insulated strands, and one bare strand, all three very heavy
> guage.
>
> I suspect that when the previous owner added the garage, they stubbed
> in this line for eventual use to put a sub panel in the garage.
Or it's a single 220 V circuit with a bare wire ground?
>
> My reading of the Alberta electrical code simplified (the green book.)
> is that this wire is not code for in house wiring. It's not clear to
> me whether the rafter space of a breezeway in inside or outside.
>
> Eventually I want to wire the garage properly. Replacing this wire
> will be difficult, as it feeds into the wall from above, but feeds into
> the main distribution panel (which is in the wall adjacent to the
> breezeway) from the bottom.
>
> I can see the concern because of the bare wire. Ground isn't always
> ground. Would it be reasonable to use this wire to go to a sub panel
> using the bare wire as the neutral: if:
How is this coil of wires connected to the main panel at the 50 A
breaker? Two insulated wires going to the breaker? Where
does the bare wire connect at main panel? To the same electrical
connection as the other household neutral wires?
>
> 1. A plastic junction box is affixed to the wall where the wire comes
> out.
> 2. The entire route to the sub panel is in 1.25" plastic conduit.
> 3. The bare wire is used as neutral, and is bonded to the grounding
> post in the sub panel, as well as the neutral bus.
> 4. The subpanel is grounded to earth.
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