It is important to review previous articles that dealt with magnetic motor starters, input and output devices, and ladder logic as they provide some necessary background for PLC operation.
All three elements of the fire triangle — oxygen, ignition source, and fuel — must be present simultaneously and in specific quantities for a fire or explosion to occur.
Article 230 is in some ways the genesis of the electrical system, meaning that it is very often the starting point of the electrical installation for a facility.
Many times, the various parts of the electrical distribution of carnivals are composed and mended from random parts and pieces and inevitably show the consequences of life on the road.
One of the most basic calculations for any power system, and arguably the least understood and most misrepresented, is the calculation of available fault current.