Cable Types

It's designed around the purpose of it's use. Control cable to power controls, instrumentation cable for instruments and power cable to provide power. Even in these categories there are many to chose depending on power consumption of the devices(conductor size), their voltage(insulation properties) and stresses on the conductor under use(insulation properties and and stranding) will the conductor need to flex a multitude of times. Will out side forces disturb the signal(shielding).

Fiber optic cable is cable that carries a light signal not electric.

Thank u ozzb.

can u give the details of the cable, i.e. how the control cable controls the power? how the power cable provides power?

Neither of the cables provide or control anything. These are just current or signal carriers and used after calculation of the loads they're going to carry signal. That signal can be of any kind.

The wires or cables are conduits in which electricity is ran between devices. It neither controls or provides the power. The electricity can be a signal communicating between the devices example a thermocouple to a temperature control. The electricity can be power for example motor starter(contactor) to a motor. The details are in the application which there are too many applications and types of wire.

If you need more information on the details of wire I suggest you google NEMA or NEC

Power cable does not control power - it transmits power.

Control cable- does not control, it is used for transmitting control signals...

The insulation, noise isolation (shielding), signal attenuation etc all are dependent on uses. Fibre optic is of course a bit different in the way it can be used as control/instrumentation cable.

BTW: Homework?

control cables are for controlling purposes; the voltage and current that these cables handle are low (24VDC or 125VAC). They are not designed to provide power for the final element. Thus, the insulation and short circuit withstanding capabilities are lower.

power cables provide power to the final element. the voltage can be up to 1000V (for LV systems) and the current can be in tens of amps. Insulation is important for these cables.

Instrument cables carry signals (4-20mA). They are usually 1.5mm2 and come in twisted pairs to minimize noise.

The first three are based on metal conductors, usually copper. The fourth one isn't.