Terms And Definitions - GE Discovery NM/CT 670 Instructions Manual

Regulatory Clearances
D.1.3 Terms and Definitions
Egress: The path of exit from within any room, constituting a continuous and unobstructed space,
without trip hazards along the path of exit.
Workspace: The dimensional box required for safe inspection or service of energized equipment.
It consists of depth, width, and height. The depth dimension is measured perpendicular to the
direction of access. Additional conditions can increase the minimum dimension requirement.
GE Healthcare defines this as the envelope of the component superstructure with the external
covers in place.
Service Access Width: The width of the workspace in front of the equipment. A minimum of
762 mm (30"), or the width of the equipment, whichever is greater.
Head Clearance: The height dimension of the workspace. The height of the workspace measured
from the floor at the front edge of the equipment to the ceiling or overhead obstruction(s).
1981.2 mm (78"), or the height of the equipment, whichever is greater.
Grounded Wall: Any wall that can be electrically conductive to earth ground. Masonry, concrete,
and tile are considered conductive. Additional commonly found aspects of a wall should also be
considered grounded.
Discovery NM/CT 670 – Standard Integration Instructions
5483063-1EN, Rev.2, ©2015 GE Healthcare D-9
D.1 Regulatory Clearances
D.1.3 Terms and Definitions