The voltage is always determined by the device. (in this case a slow cooker).
However, having established what voltage to supply to the device, the cable must be suitable for the voltage used. Everything in the chain of power transmission, must be rated for the correct voltage. Cables, plugs, fuses etc.
Cable
The thermocouple is an sesnsing device , when the temperature increases it increases the voltage , that voltage is used for tripping purpose
To answer this question the voltage of the cooker is needed.
A cable tester is used to test the electrical connections in a cable or other wired device. There are two ways to test for a connection: continuity test and resistance test. A cable tester can also test for a short by determining voltage.
There is actually no specific formula used to work out cable size. In order to determine the type of cable you need and the size you need, you need to know the source of the supply, the voltage of the system, the ambient temperature, and the method you plan on laying out the cable.
Voltage Grade of cables specifies the safe voltages which the insulation of the cable can withstand.
The thermocouple is an sesnsing device , when the temperature increases it increases the voltage , that voltage is used for tripping purpose
To answer this question the voltage of the cooker is needed.
More electricity needed by a cooker requires a thicker cable than for a table lamp.
I assume you mean a cooker switch, which should be fed from a 40A MCB in the conmsumer unit and with 6mm cable
The electric cooker cable is made thicker because it has to carry more current. If it were too thin it would heat up and perhaps melt.
A cable tester is used to test the electrical connections in a cable or other wired device. There are two ways to test for a connection: continuity test and resistance test. A cable tester can also test for a short by determining voltage.
If the voltage is supplying any current through the cable, i.e. if there is any 'load' at the end, then the voltage will drop through the cable.
It will decrease the voltage drop.
There is actually no specific formula used to work out cable size. In order to determine the type of cable you need and the size you need, you need to know the source of the supply, the voltage of the system, the ambient temperature, and the method you plan on laying out the cable.
Voltage Grade of cables specifies the safe voltages which the insulation of the cable can withstand.
An LT cable is a low tension (or low voltage) cable.
No. A volt-ohmmeter will not check insulation. To check cable insulation you need a special device (called a megger) made for the purpose that imposes a high voltage and measures current leaks.