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That answer assumes the A/C is to be installed in a residential installation, because the service voltage is 240.
The length of wire-run should also be factored-in when deciding the correct wire size.
To get the right answers refer to the Wiring Codes or Regulations for your locality. (Town/State.)
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
It would be wise for you to contact a licensed electrician to answer this question.
A wrong answer may burn down your house & kill you & others.
A quick call to a professional is the safe way to go.
For a 220 volt 100 amp breaker, you would typically need a wire gauge of 2/0 AWG (American Wire Gauge) or larger. It is recommended to consult with a professional electrician to ensure the proper gauge is used for your specific installation.
I wouldn't, always safer to go heaver gauge. I recommend 8 gauge if you are going to be running any length of wire. Fire is never fun I believe the above answer assumes the question was meant to read, "30 amp 220 volt dryer." 12 gauge wire WILL NOT carry 30 amps safely. You need to run #10 copper minimum. It is never a bad idea to upsize, such as the recommended #8, but it is not necessary if 30 amps is what you need.
The type and size of a wire for a 240 volt air conditioner will depend on the amperage the unit draws.
minimum gauge is 6 and the best is 4
If it does not come with a plug on it, no. If it is made for direct wire, then 99.9% chance is that it is a 240 volt unit. If you plug it into a 120 volt outlet your water will barely get warm.
The gauge of wire that is 12 volt is 18, 14, and 16.
Use 8 gauge wire.
10 gauge will work fine.
# 3 gauge
4800
Bad sending unit, corroded wire from the sending unit to the gauge, faulty fuel gauge are a few.
It really depends which sort of GAUGE you have. For example; you couldn't wire a volt meter to the oil pressure switch.
For a 220 volt 100 amp breaker, you would typically need a wire gauge of 2/0 AWG (American Wire Gauge) or larger. It is recommended to consult with a professional electrician to ensure the proper gauge is used for your specific installation.
The wire size depends on how much current it will conduct.
If you are referring to the main battery cable use 00 guage cable.
Your sending unit in the fuel tank may be bad, the wire connector could be disconnectged or there is a broken wire in the circuit, or the gauge itself has an issue.
Wire gauge is a measurement of how large a wire is, either in diameter or cross sectional area. This determines the amount of electric current a wire can safely carry, as well as its electrical resistance and weight per unit of length.