Most storage devices that do not require vision and a brain to read data fall into this category. Electromagnetic data may be stored in either an analog data or digital data format on a variety of media.
Direct Tripwire Alarm - The wire placed across the path is directly connected with the cord, wire or string placed across the particular path. Laser Tripwire Alarm - An invisible laser, typically an infra-red, is used instead of a cord or string.
Shock protection afforded by a residual current circuit-breaker (RCD) in addition to an overcurrent protective device (fuse or circuit-breaker)For wiring in conduit, it is assumed that the protective conductor has the same cross-sectional area as the phase and neutral conductors, namely 6mm 2 or 10mm 2.hock protection afforded by a residual current circuit-breaker (RCD) in addition to an overcurrent protective device (fuse or circuit-breaker)For wiring in conduit, it is assumed that the protective conductor has the same cross-sectional area as the phase and neutral conductors, namely 6mm 2 or 10mm 2.