Today, more than ever, an industrial plant or commercial building is only as good as its electrical power distribution system. While it is not possible to design an electrical system which will be completely trouble free, equipment is now readily available which, when properly applied, installed, and maintained, provides safe and efficient distribution of electrical power to wherever it is needed. However, it is also essential that the system be designed with both flexibility for change and appropriate reliability.
The purpose of any electrical system is to safely distribute power to wherever it is needed. All circuits must have adequate protection to ensure the safety of the user, the equipment, as well as the overall electrical system. The electrical power distribution system should include protective devices that disconnect and isolate failed components to minimize their disturbing effects on the rest of the electrical system.
The National Electrical Code
Inductive & Capacitive Reactance
Ohm's Law For Direct-Current Circuits
Ohm's Law For Alternating Current Circuits
