An enclosure for an electrical distribution unit which includes a transformer provides for a semi-buried positioning of the transformer to allow easy access to electrical conductors of a power source. The enclosure includes a housing unit and an underground vault within which at least part of the housing unit is positioned. The housing unit extends partly above the ground, so as to allow easy access to connections for the distribution unit from the ground level. An inclined front wall of the housing unit facilitates such connections. A hingedly attached cover closes a part of the inclined front wall of the housing unit above the ground and prevents adverse effects of the environment on the electrical distribution unit positioned within the housing unit.