Underground cable enters the distribution box

The customer connection to an underground distribution system is usually called a "service lateral". Conductors of a service drop or lateral are usually owned and maintained by the utility company, but some industrial drops are installed and owned by the customer.OverviewIn, a service drop is an overhead electrical line running from a to a customer's building or other premises. It is the point where provide power to their customers. The custo. In North America, the 120/240 V system is used for residential service drops. A pole-mounted single phase usually provides power for one or two residences. The secondary winding of the trans. Commercial and industrial service drops can be much bigger, and are usually. In the US, common services are 120Y/208 (three 120 V circuits 120 degrees out of phase, with 208 V line-to-line), 240 V three-phas.