Wires and their terminology explained

If you have your house constructed, you must have come across the electric wiring personnel spell out some words such as ‘Wire Gauge’, Ampere, Watts etc. that may have also bewildered you. At that time, you may have nodded your head giving an impression that you understand those power related jargons. However, do you actually know what these are and what these mean in practical life?


Wire gauges

This is actually a term for the grades of wires and capacity of wires. A Gauge of a wire, in layman’s language is the thickness of the wire or the size of the wire. There are various Gauge of wires available which support different power loads. For example a 6 gauge wire can withstand a load of up to 50 Ampere which means that this wire is appropriate for heavy power usage equipment such as air conditioner, geyser etc. Similarly, a lower gauge wire would support lower load equipment. Thus it is important that proper gauge of cables should be put to proper load. If a lower gauge wiring is subjected to higher load then it may melt and lead to short-circuit. Besides, the quality of the fitting should also match with the type of equipment it is meant to support.

Ampere

Different equipment at home consume different amount of electricity and hence they should have wires of exact gauge supporting that much load. The ampere of an equipment are reflected on it. The ampere refer to the amount of current it needs. Thus an equipment requiring 1A will be a less power consuming equipment than a 5A equipment. Also, more the ampere more heavier should be the wiring. Thus, an air conditioner running at 5A requires heavier wires than a mobile charger consuming only 1 or 2 A. Equally important here is that the power socket and switch on the power outlet should match.

Watts
The power consumption by an equipment is measured in watts. An electric bulb may be of 15-500 watts while an air conditioner wattage ranges between 2000-2500W. Thus the more watts, the more power consumption will be done by the equipment. Therefore, if an air conditioner is installed then the wiring also needs to be heavy. A 6-gauge minimum is required. Similarly, a smaller gauge wires would do if the watts of equipment is low. For an electric bulb, even a smaller gauge wire would be ok. Thus, there is a downward compatibility but not upward compatibility. For example, a wire installed for air conditioner can be used to light a bulb but a wire of fewer gauges cannot be used to power an AC.

It is advisable to keep the load in mind while selecting the wires. The best way is to imagine what all the equipments would be used at a place and then calculate the total load. Based on this total load on a particular power outlet, the proper gauge of wires should be used. Besides this, matching switches and sockets should be used so that the power outlet can withstand the power load of the equipments attached to it.

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