It's all a matter of 'history'. In effect, the 'standard' has changed
The 'nominal value' for residential electricity delivery has climbed over
Circa WW II, it was 110 VAC,
By the mid 50's, 115 VAC,
By the mid 60's, 117 VAC,
Somewhere in the 70's 120 VAC.
When somebody 'casually' refers to _any_ of those numbers, they're talking
about 'contemporary residential electrical service', which is actually 120VAC.
The difference in these voltages is, for _practical_purposes_, *not*
significant. Particularly, among 115, 117, and 120.
As for the difference between "110", and "220" (or 115 and 230, or 120 and 240),
that's just the "normal" two voltages you get from the power company. From
the transformer on the pole, they bring in _two_ 'hot' wires, and a 'neutral'.
From either 'hot' to neutral, you get 110 (actually, today, 120). By going
from one hot to the _other_ hot, you get 220 (actually, today, 240). The
higher voltage is used to run 'high power' equipment (e.g. electric stove,
electric water heater, electric clothes dryer) more efficiently. If you're
going to run medium-big power tools, it is advantageous to run them on the
higher voltage. Obviously, this requires that you _have_ that kind of power
available where you plan to use the tools.
From the sounds of your set-up, it'd be worthwhile getting an electrician
in to at least estimate installing some extra circuits, whether of the
120 or 240 variety.
I think this is a first for the wreck: an electrical thread where
everybody gave the same advice without any contradictions or
arguments. Nobody nailed me for not mentioning power factors. :-)
Replace "no" with "yk" twice
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