In simple words, voltage is a potential energy difference. Voltage is similar to current, but is calculated as the work put in to pass current between two circuits. It can also be categorized as a force that has a primary function of moving free electrons from different atoms. The unit used in measuring voltage is called volts and is symbolized as the letter V usually placed in brackets. The normal voltage of a house circuit would be about 120 volts to 240 volts, anything outside that is considered low or high. There is a special instrument used in measuring voltage known as voltmeter.
A low voltage circuit would carry at least 30 to 50 volts, this may look small, but has the ability to cause a serious shock when naked. Voltage isn’t the main thing that kills, it is current, applying ohm’s law that guides voltage, current plus resistance the amount of current passing through an outlet equals the voltage too. Safety measures need to be taken while operating electrical appliances regardless of how little the voltage may be. The box used in stepping down high voltage for measurement is popularly known as a volt-ratio box operated mainly by electricians.
A volt box measures any amount greater than one point 8 volts in a circuit. It helps in extending the voltage range within an outlet or circuit. The volt box is made of a series of resistors connected to taps. Taps are used to calculate potentials that are higher than the instrument’s gauge. Using a box in low voltage is not essential, but it isn’t a bad idea to take caution. Other safety measures to prevent damage alongside shocks include placing the wiring in a conduit together with a junction box. Reasons why low voltage wiring should be protected in a box is because most wires are thin, they are also not usually durable so protecting these wires is a good idea.
Conduits can serve as an alternative since it makes replacement of old wires simpler for future cases. Use of boxes is not popular in many homes, however, there is crime in giving low voltage wiring the same protection as high voltage. Installing a box is simple to do, household members may find it hard to do this because of the fear of being shocked. An alternative is to call a certified electrician who is familiar with most electric wiring.
Some essential steps as a learner to take while trying to install will be explained further. Any electrical box must be placed at similar heights to other boxes around two meters off the floor. The measurement can be adjusted to taste, but any measurement chosen must be stuck to. Another useful tip is tracing the measuring tabs with nails to an accurate work. To avoid breaking the box when using a hammer, ensure that the force exerted is just a small amount by throwing light blows. Drywall strips help in showing the pattern in which a wiring box should be correctly placed.