I had a 20,000 BTU a/c unit installed about 15 years ago. It was
plugged into a 220 volt outlet. I see today that these larger a/c
units are rated for 230 volts.
Does the difference in voltages really matter?
On Mon, 08 Apr 2019 16:01:48 -0500, firstname.lastname@example.org wrote:
One more question.
An ad states that an a/c unit is 25.5" in width, yet needs a 29 inch
window opening. My window opening is 27". Why won't that 25.5" a/c
fit into my 27" window?
What am I not understanding?
The a/c we now have is mounted on the outside from underneath. It has
'L' shaped brackets bolted to the bottom of the a/c. The bottom of
the bracket is bolted to the bottom of the window ledge. It's held for
Bottom line , NO, it does not.
Over the years the power company has raised the nominal voltage comming
into the homes. At one time it was called 220 (which I often say
because my dad did) then 230, now most often 240. The lower voltage
equipment can be half any of those , 110,115,120.
The power company will send anywhere from about 235 to 245 volts to a
house depending on how much load is on the power grid. I monitor my
power comming into a room in the house and it has varied from 226 to 248
in the last year. This is measured with a voltmeter that is accurate to
1/2 % or better and not the inexpensive China meters.
The one time you do need to pay attention is if the equipment is rated
at 208 or the power comming in is 208. Both are seldom seen in homes
in most of the country.
That 208 voltage is derived from a 3 phase powe system which I am not
going to get into as it will confuse the issue. Just a note to stay away
from anything labled that unless you know that is the power comming in
to your house.
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