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Fuse box to CB Panel - logistics

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Fuse box to CB Panel - logistics RichK 07-27-2007
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Posted by BillGill on July 29, 2007, 9:36 am
Stormin Mormon wrote:
> With 220 volt feed to the house, it's very possible that if each
> "leg" was running the same amperage, you'd have zero amps in the
> neutral. So, the neutral is only for the imbalance.
>
But most of the circuits he is talking about are
unbalanced 120 V feeds to lighting, and small
appliances. Depending on the actual layout they might
wind up bing highly unbalanced. On the average they
will be balanced. But the average is only an average,
you have to design on the assumption that everything
will go the other way. It's called Murphy's Law.

Bill Gill

Posted by aemeijers on July 27, 2007, 6:44 pm

> Hi All,
>
> I'm sure it's been asked a million times and answered, but I'm not getting
> any google hits on the specific point.
>
> When replacing a fuse box with circuit breaker panel in a 50's house, how
> does an electrician mange to transfer all the cables from one to the
> other.
> They will not be long enough in most cases, even if the new box is put in
> the exact space.
>
> There's nothing wrong will the existing cables in the house, but they
> would
> not be long enough to connect to anything else except the existing fuse
> box.
>
> Can one install some sort of small terminal block box above existing fuse
> box and use it as an interconnection box, then jumper all the cables to
> the
> new CB panel?
>
Chuckle. In this house, when they had to move service entrance due to an
addition and a upgrade to 150 amp, they gutted the old service panel and
used it as a giant junction box, with floating splices and terminal blocks,
and extended the runs ten feet sideways to the new service panel. I guess it
met code enough to get the inspection sticker, but I'm not really happy with
it. (Note that the work predates my ownership- no way would I have signed
off on that as owner, even if it cost another several hundred to pull fresh
wire on all or some of the runs, or put a longer pipe between meter base and
old location, or make old panel location a subpanel fed off a new main
panel.)

aem sends...



Posted by BillGill on July 28, 2007, 9:24 am
aemeijers wrote:

>>
> Chuckle. In this house, when they had to move service entrance due to an
> addition and a upgrade to 150 amp, they gutted the old service panel and
> used it as a giant junction box, with floating splices and terminal blocks,
> and extended the runs ten feet sideways to the new service panel. I guess it
> met code enough to get the inspection sticker, but I'm not really happy with
> it. (Note that the work predates my ownership- no way would I have signed
> off on that as owner, even if it cost another several hundred to pull fresh
> wire on all or some of the runs, or put a longer pipe between meter base and
> old location, or make old panel location a subpanel fed off a new main
> panel.)
>
> aem sends...
>
>
That seems to be the standard way to do it. That's what
they did several years ago when I had my fuse panel
replaced. They had to move the panel to the outside of
the wall the fuse box was on because the fuse box was in
a closet. The just extended the wiring using wire nuts
in the old fuse box, which became, as you said, a giant
junction box. Then they screwed the cover shut and
marked it as a hazardous area. The inspector seemed to
expect just that.

Bill Gill

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