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.
There are a number of concerns with knob and tube wiring. Some of them are listed hereâ¦. 1  It is an ungrounded system, which provides a greater chance of shock or electrocution and damage to sensitive equipment. 2  It is very old wiring (at least 62 years old, at best), and in many cases has deteriorated, cracked or is missing insulation, which can lead to fires.