Definition of aspect for Students. 1  1 : the appearance of something : look The old house took on a dark and lonely aspect at night. 2  2 : a certain way in which something appears or may be thought of We considered every aspect of the question. 3  3 : a position facing a certain direction The house has a southern aspect.
Knob and tube wiring is the original wiring method used from the late 1800s until approximately 1945. It is a system that involved stringing individual conductor insulated wire across porcelain insulators called âknobs,â and through other porcelain insulators called âtubes.â.
circuit breaker, medium voltage switch, medium voltage breaker) reflects the most commonly-used equipment for. each arrangement. The symbology used throughout this section is shown in figure 5-1: Radial system. The radial system is the simplest system topology, and is shown in figure 5-2.