About a tenth of a ton.
Yes. You should use 8 AWG wire from breaker to AC unit.
To answer this question the voltage of the air conditioner unit must be stated.
The breaker type be it a single pole or double pole will depend on what voltage the air conditioner operates on. Once the voltage is established, the sizing of the breaker depends on what the current draw of the air conditioner is.
More information is needed, maybe a lot more. Depending on its size you may need a new circuit for it. If you trip the breaker then don't use it and get a new circuit installed for it on its own breaker. You are probably talking about a window unit. If it is a simple 5000 BTU unit you can probably plug it into the nearest receptacle. If you trip the breaker then you need to run a new circuit for it. If it is much larger you may need to run a new circuit. If it is a 240 volt unit then you need a new circuit.
You need to find the rating label on the unit. It would not be unusual for this to happen. I expect you need a 20 amp circuit.
The wire is sized to the maximum overcurrent protection device (Max circuit breaker) ampacity. This is listed on the nameplate of the outdoor condensing unit. Size the wire to match the breaker.
Yes. You should use 8 AWG wire from breaker to AC unit.
Read the literature for the ac condensing unit, or the tag on the outside of the unit. Minimum circuit ampacity= minimum breaker, wire and fuse size. Maximum circuit ampacity= the maximum size. Your circuit breaker, wire size and disconnect fuses should all be at or between those 2 numbers.
To answer this question the voltage of the air conditioner unit must be stated.
It is possible that the circuit breaker for the compressor unit is thrown (switched to "off"). Go outside to the compressor unit and follow the big cable up to the circuit breaker panel on the wall. If it is off, throw the switch to "on." If that is not the problem, something is probably wrong with the compressor unit. Turn off the breaker panel and call a repairman.
The breaker type be it a single pole or double pole will depend on what voltage the air conditioner operates on. Once the voltage is established, the sizing of the breaker depends on what the current draw of the air conditioner is.
The ampere frame rating for a circuit breaker designates how the circuit breaker should be configured. It also states the trip unit of the amp.
More information is needed, maybe a lot more. Depending on its size you may need a new circuit for it. If you trip the breaker then don't use it and get a new circuit installed for it on its own breaker. You are probably talking about a window unit. If it is a simple 5000 BTU unit you can probably plug it into the nearest receptacle. If you trip the breaker then you need to run a new circuit for it. If it is much larger you may need to run a new circuit. If it is a 240 volt unit then you need a new circuit.
You need to find the rating label on the unit. It would not be unusual for this to happen. I expect you need a 20 amp circuit.
You need to look on the manufacturer's specification plate on the unit for the amperage and voltage.
In the US a miniature circuit breaker, sold in a single unit, is about 15$, about the same as a regular breaker. If sold as a double unit, meaning two mini breakers installed into one housing, then it is about 25$.
A 20 amp breaker might actually be needed for the installation. It depends on the wattage and voltage of the window air conditioner.