Electrical box grounding mark

Most of the time the ground symbol you are most familiar with, the 3 decreasing-length lines, is the one that is used in a generic sense to illustrate ground. The three diagonal lines and the decreasing horizontal bars represent chassis and earth ground, respectively. Below is a thorough table outlining some of the most. On Your Mark is a monthly column written by Geofrey Peckham, President of Clarion Safety Systems and chair of both the ANSI Z535 Committee and the U. Technical Advisory Group to ISO Technical Committee 145- Graphical Symbols. Furthermore, the three. These labels help inspectors, technicians, and homeowners verify that grounding has been completed correctly—and that metal parts are properly bonded. Ground tags aren't just for show. To identify a functional earthing (grounding) terminal, for example, of a specially designed earthing. This is the symbol for an Isolating device like a disconnector PROTECTION: it is the protection of a line or of an electrical equipment from overload, short circuit and ground fault (indirect contacts or Fault Protection). It can be realised by a Circuit Breaker or a Fuse switch.