In electric power distribution, a service drop is an overhead electrical line running from a utility pole, to a customer's building or other premises. It is the point where electric utilities provide power to their customers. The customer connection to an underground distribution system is usually called a "service lateral". Conductors of a service drop or lateral are owned and maintained by the utility company. At the customer's premises, the wires usually enter the building through a weatherhead that protects against entry of rain and snow, and drop down though conduit to an electric meter which measures and records the power used for billing purposes, then enters the main service panel.