eleventh week

· New department again, last one : metering department

· There are three types of metering which is

o Single phase metering

o Three phase metering

o Current Transformer (CT)

· For single phase metering, the current value uses in fuse about 10-50 A. It use two wire connected from supply to meter board consumer. It also have one cut out and one neutral link.

· For three phase metering , the current value uses in fuse about 10-60 A. It used four wire connected from supply to meter board consumer. It have one neutral link and three cut out

· In current transformer, it used digital electronic meter

· The meter position for terrace houses, semi detaches and bungalows in urban areas should be at the entrance gate.

· For flats and condominium the meter should be at the entrance gate. For flats and condominium the meter should be grouped together.

· For the low cost terrace houses and in rural residential the meter should be placed on the electric poles.

· For shop houses and other commercial terrace buildings (<>

· The height of the meter board shall be such that the meter is about 1.8 meters above ground level. For other cases, the location of meter position must first be referred to and approved by TNB.

· Meters and their accessories should be installed only in clean and dry location not exposed to the weather or mechanical injury, free from vibration and not subjected to extremes of temperature.

· Where it is necessary to terminate the service line in a position exposed to the weather, e.g. outside the house, a suitable weather-proof, well-ventilated box of fiberglass of other materials approved by TNB, shall be provided by the customer at this own expense. Mild steel is not acceptable.