Depends on what the outlets are controlling, size of the wire, and size of the breaker.
The only determining factor is the size of the circuit breaker that you will be using. If the garage circuit will be protected with a 15 Amp breaker, you may use a 14 AWG wire. If the circuit will be protected with a 20 amp breaker, you must use a 12 AWG wire. Note too that garage outlets should be protected with a GFCI breaker or outlet. If you have any concerns regarding your ability to adequately design and install the garage outlets, please, for your own safety, contact a local electrician.
the size of wire is 95sq.mm
To calculate the wire size, a system voltage is needed.
For the 120 volt outlets on the wall use a 20 amp breaker wired with AWG #12 wire. The circuit must be GFCI protected. Any 240 volt outlets must be wired according to what they will be powering.
#6 wire is needed. If placing the subpanel in a garage at a good distance, it is recommended to also install a seperate ground rod .
Yes you do. The detached garage will either be fed with a single circuit or a sub panel. The wire feeding the garage will need to be protected and that is the purpose of the breaker (disconnect). The breaker size will be determined by the size of the wire that is used on this circuit.
It is unusual to have multiple outlets on a 30 Amp service. If you do this you need outlets rated at 30 amps and 10 AWG wire.
To size a wire for a device the amperage of the device is needed.
Depends on what you are asking about. I can tell you that all garage outlets must be protected by a GFCI circuit. You can install as many or as little as you want as long as there is at least 1 outlet on each wall. Any freezer or refrigerator must be on a dedicated circuit. There must be a light switch by the doorway mounted 48" to the top of the switch box. If you have 2 entrances into the garage then install a 3 way light switch so the lights can be turned on/off at both locations. Outlets cannot me mounted higher than 48" above the floor. I would install the outlets on 1 circuit and the lights on another circuit unless you only have a couple of lights. Use AWG #12 wire for the garage protected by a 20 amp breaker. If the garage is detached from the house then you need a disconnect in the garage. Any 240 volt outlet must be on a dedicated circuit protected by the proper breaker and correct size wire needed for the device.
Depends on the size wire used in the circuit. If you wired the circuit with AWG #12 wire on a 20 amp breaker then you can install no more than 12 outlets. If you wired it with AWG #14 wire on a 15 amp breaker then install no more than 9 outlets. This is assuming only outlets are on the circuit and nothing else.
#8 copper wire.
AWG # 6 wire.
Wire is sized by the amperage that it is allowed to legally carry. To answer this question the amperage that you need at the garage must be stated. Also the distance to the garage must be stated. With this information the calculation can be made.
The wire size depends on how much current it will conduct.
3/0 for copper wire
The length of wire needed will dictate wire size as much as amps and volts.
Could you clarify the question please. You can't just upgrade the breaker. Its calculated on wire size and other things. You'll have to run different wire if you want to up your amps.
To answer this question the voltage and load amperage is needed.
If they are on the same circuit you only need 1 neutral wire in the circuit.
600 MCM THW wire
#6 wire stranded
A #14 wire will do fine for grounding a 20 amp device. That is the size of the ground wire in a 2 conductor # 12 wire building cable.