Distribution Board (DB)
A Distribution board is a part of an electrical system that takes electricity from main source and feeds it through one or more circuits to distributes the electricity throughout the Load. This is often called an electrical panel, panel board or even a fuse box.
Main Distribution Board (MDB)
MDB is a panel or enclosure that houses of circuit breakers and ground leakage protection units where the electrical energy, which is used to distribute electrical power to numerous individual circuits or consumer points, is taken in from the transformer or an upstream panel