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.
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.
The scope of this article covers the requirements for branch circuits and feeders running on or between buildings, structure, or poles on the premises, which would also include the wiring for the supply of utilization equipment that is located on or attached to the outside of buildings, structures or poles.
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.
Starting with Part III of Article 220, which is titled Feeder and Service Load Calculation, we will finally start with the actual math work.
Let's look at the location for the grounding termination of the many electronic systems that currently occupy our households, and how the requirements have evolved and how the industry has grown to meet the challenges.
Since Article 215 is simply titled "Feeders,” let’s start by answering the question "What is a feeder?”
Part II of Article 210 deals with Branch-Circuit Ratings, starting with conductor sizing. These are some pretty basic rules so we will just cover the highlights here.