To answer this question the voltage and load amperage is needed.
It depends on the length of the run
For a 75 amp circuit with a 100 ft run, you would need a #4 AWG copper wire to ensure minimal voltage drop and to meet electrical code requirements. Using the correct wire size helps maintain the efficiency and safety of the circuit.
Wire is not sized by voltage. It is sized by current measured in amps. Some common copper wire sizes and their current capacities are: 15 amps -- 14 gauge wire 20 amps -- 12 gauge wire 30 amps -- 10 gauge wire 40 amps -- 8 gauge wire
You would need to use a wire size that is rated for at least 40 amps to be safe and to meet the requirements of the air conditioner. A common wire size for this application would be 8 AWG copper wire, which is rated for 40 amps.
The size of wire needed for a trolling motor depends on the motor's maximum amperage draw and the length of the wire run. A general guideline for a 12V trolling motor is 6-gauge wire for runs up to 10 feet, 4-gauge wire for runs up to 20 feet, and 2-gauge wire for runs over 20 feet to minimize voltage drop and ensure proper performance. Be sure to consult the manufacturer's recommendations for your specific trolling motor.
12 gauge or bigger.
you must run the proper size wire based on the ampacity needed, wire must have four conductors including the gound
It depends on the length of the run
Normally AWG #10 wire on a 30 amp breaker but it really depends on the size of the pump. The pump manufacture will specify the size wire and size breaker needed.
This is a voltage drop question. To answer this question a voltage must be stated.
If it is a 110 volt light it can safely run on a 20 amp circuit with AWG # 12 wire.
12/3 will work.
For a 75 amp circuit with a 100 ft run, you would need a #4 AWG copper wire to ensure minimal voltage drop and to meet electrical code requirements. Using the correct wire size helps maintain the efficiency and safety of the circuit.
Presuming that you would like the least expensive installation, the following is calculated on overhead aluminum wire. The wire size needed to hold the voltage drop to 3% would be 3/0 MCM. If the installation could be run on 240 volts then the wire size can be reduced to #2.
The wire size depends on the amperage, not the voltage. The fact that the welder runs on 440 volts does not affect the wire size! You need to ask this question instead: What size wire do you need for a three phase welder on an eight foot run if the nameplate amps are 45A?
45
You size wire by the current. Various insulations are rated for voltage, temperature and the medium where the wire will be run.