service entrance switch
1. Equipment and machinery for the provision of heat, light, sanitation, ventilation, fire fighting, transportation, refuse disposal, etc., which is a permanent part of a building and subject, therefore, to the code requirements governing the installation and use thereof.
2. The necessary electric equipment, located near the place of entry of the supply conductors in a building, which constitutes the main control and means of cutoff for the electrical supply to the building; usually consists of a switch and fuses or a circuit breaker and required accessories.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.