There have been a lot of developments in the field of electrical engineering after 19th century during which electricity was turned from a scientific curiosity into an essential tool for modern life. Since then the consumption of electricity has been continuously rising and so is the need for electricity products required to know the energy utilization which has led to the invention of meters.

Electric Meter

An electric meter is a device used to measure the consumption of electricity at a residence, business, or by any device that runs with electricity. The meters are usually set to measure the consumption of electricity in terms of billing units called kilowatt-hours. This is the main reason for why these are also known as kilowatt hour meters. Kilowatt-hour means the amount of energy used by a load of one kilowatt over the period of one hour. The billing cycles and energy used during each cycle are usually established with the periodic readings of these electric meters.

Types of Meters

The meters are classified into two types as single phase meter and poly phase meter. Single phase meter is used in a single phase AC supply where as poly phase meter measures electricity in a poly phase circuit. Single phase meters are widely used for residential energy calculating needs whereas poly phase meters find use in commercial and industrial units where the power consumption is very large. Now-a-days even group metering solutions are also available. The best example for this is modern day modular meter system where a number of modular meters are connected by a common bus bar and the entire unit is housed in meter box with transparent cover. This is an innovative solution for distribution and metering of multiple consumers at the same time. Similar to this are the composite meter systems where a single metering system can be used for metering multiple connections. However for distribution of power supply nothing can be better than direct connected distribution boxes.

Meter Enclosures

In order to avoid tampering of meters, these are usually placed in meter boxes or meter enclosures for the purpose of safety. Push fit type enclosures and sealing type meter enclosures are the popular types of enclosures widely used. The enclosures with push fit type of locking system are the meter boxes which once closed or sealed cannot be opened without breaking the box, thereby recording tamper. However the pole mounted meter enclosures are more convenient, safer and tamper proof solutions for metering in urban situations.

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