Thread: 3 phase service
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John John is offline
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Default 3 phase service

Wild_Bill wrote:
Slab type transformers aren't particularly difficult to locate outdoors
or indoors.

An armor channel covers the HV side conductors downward along the side
of the utility pole, as underground service is typical with pad xfmrs.

Various sizes of outdoor-duty types can be seen around commercial sites,
and also mobile home parks and campgrounds.

In a wire mill environment where I worked years ago, the KV lines were
run underground into the facility, and the switchgear, xfmrs and various
cabinets were mounted on a reinforced overhead slab standing on beams.
The 3-phase 460VAC circuits were branched out with buss systems.


All the plants that I do maintenance in are old.... transformers all sit
behind a chain link fence.

Now that I think about it most residential developments around here
are fed underground with a nice neat little pad and transformer a couple
of feet high and about 4 foot square. A commercial installation would
be just a little bit bigger.

I'm surprised that the electric co. doesn't supply you the transformer
for free if you use a minimum amount of power.


John