Posted on 12/14/2019 8:12:55 AM PST by Allen In Texas Hill Country
Also use a GFI outlet near water
What you need is a neutral for 120v application.
Easiest fix is to move one of the hot conductors at the electrical panel to the neutral bar, (with other white insulated wires.)
Install the 120 outlet for new A/C with the 'new' neutral conductor under the silver screw, hot conductor under the bronze screw.
If you're not comfortable working inside a hot electrical panel, call an electrician.
-Retired electrician
On a NEMA 5-15 outlet, the common one, the BLACK wire goes to the shorter of the two rectangular slots/prongs, WHITE goes to the taller of two regtangular slots/prongs, and GREEN (if there is one) goes to the round one.
Don’t use that plug. Get one with only two prongs. The larger prong is neutral and should be silver in color.
There is two 110 voltages from the existing A/C socket.
Which 2 should I connect for 110V to power the new A/C.......just asking for a friend.
That's not so easy and you should consult an electrician if you are not sure what why are doing.
On a 220V circuit, both wires are hot and the voltage between them will measure 220. From each wire to ground or neutral, the voltage will measure 110. Without a neutral wire at that box, you cannot get 110V
You need to replace the 2-pole breaker at the panel with a properly rated 1-pole breaker and also replace the wall receptacle. One of the wires would be used as a neutral. You absolutely need a ground wire was well.
You also need to check the amp draw of the AC unit as it may be over 15 amps and would require a larger wire size and a properly rated outlet.
If it's an option, staying with 220V unit would be best.
Do NOT hook up a 110 circuit to a 220 socket. You will be running 110v return on the ground circuit. While the item will run, a loose wire or bad connection could make that 110 return voltage show up on the outer surface of any metal appliance in the house. Like a coffee pot next to a sink.
Death will result from touching the water handle while holding the coffee pot.Like when you fill it.
Just have an electrician convert the plug to 110 in the wall AND the breaker panel. One of the hot wires must be converted to a neutral and marhed white on both ends.
I’ll do simple wiring with 110 but I have a hard and fast rule about wiring 220 - let an electrician wire it.
DO NOT connect the neutral to other than the neutral, just buy the correct two prong plug.
NEVER connect a neutral to a ground. A neutral wire is a current carrying wire. Making current available to a ground circuit may be a fatal mistake.
Use a short length of the same gauge wire to connect the unused ground pin to white neutral (2).
BINGO!
If there are prongs, like in an outlet or recepticle. The shorter prong is always the hot, or black. The slightly longer prong is the neutral or common.
I speak cross-wise on the shorter/longer, not lengthwise as they are both the same length, just different widths.
You started off with ‘1’ is ground. But I need to know, from the diagram, about ‘2’ and ‘3’. Which is common and which is power?
The small prong or slot is hot, large is neutral.
Both prongs are the same size.
Old school plug should be change to polarized plug.
OP needs to call in a qualified electrician to look at everything and do an upgrade if necessary.
Better safe than sorry. This is not a job for amateurs.
And it’s wrong in the illustration in post #9.
Color-wise, anyway.
Correct, and the earth ground lug will almost always have a green colored screw in a typical plug end like this.
I would wire hot (black) to the Bronze colored lug and neutral (white) to the silver lug with the silver screw and leave earth ground empty as it is not needed for a two prong connection.
Better yet, just get a 2 prong plug with a polarized prong (wider prong for neutral).
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