In this lecture, we will cover basic electrical safety principles. I will explain safety procedures that you should consider while working on electrical equipment.

In this lecture we will look at basic electron theory. We will look at why we say that electricity is the movement of electrons. We will discuss how electrons move so we can generate electricity. We will look into conductors and what makes certain components a good conductor or a good insulator. We will also briefly discuss Ohm's law. We will look at what all of the components in Ohm's mean and what they stand for. We will discuss the different types of current; A/C, D/C, how electricity flows through a circuit and general safety practices when working around electrical equipment.

In today's Lesson I review part of electron flow and go on to how OHMs law works. We look at circuits and what makes up a circuit. We go into a single load circuit and multiple load circuits. At the same time, we will discuss how the flow of electrons is affected when the resistance is changed in a circuit. we will look at series circuits, parallel circuits and series/parallel circuits. Using OHMs Law, we look at how to find the voltage, the amperage, or the resistance when one of those readings is missing in various circuits.

In this lesson we look at generating electricity. We start by exploring DC generation, mostly with a chemical action, in other words we look at batteries. We look into what is inside of a battery, how a battery works and ways of getting different voltages and amperages from batteries. We discuss how automobile batteries are rated and what these ratings mean. We move onto magnetism and how magnets operate or what makes magnets do what they do. We discuss magnetic fields, and how magnetic fields affect different components. We discuss the use of electromagnets and finally we talk about how electricity and magnetism are used in motors.

In this lesson we look into how alternating current is generated. We will look at electron flow in an alternating current circuit. We start by looking at magnets, how they work and how magnetic fields will help us generate alternating current. We are going to look at the construction of a generator, motors and move on to how three phase generators work. As always, we discuss safety, and we will see why polarity in necessary in an alternating system.

In this lecture we are going to look into how circuits work, what makes up a circuit and how we can use different kinds of switches to get equipment to do what we want it to do. I will introduce some new electrical symbols/switches that are commonly used out in the field. We are also going to look into what makes up a relay. I will describe the components inside of the relay, what they are, what they do and how they operate so that the relay will work for us. We are also going to review how a generator operates, but this time we will talk about the voltages and how we come up with 120 V, 208/230 V, 277 V, 480 V, and both single, and three phase. I will explain to you what is needed out in the field so that you can have the correct voltage at the motor or electrical device.

In this lesson we will review the operation of a generator, the power supply coming out of a generator and how this will allow us to have different voltages going to the different loads that we have. We go into exploring different ways of connecting single face loads, whether they are supplied by one hotline and a neutral or two hot lines. We also look into how voltages and transformers differ from a commercial setting to residential one. We will also look into the electrical problems that are found out in the field. I will describe to you what they are and why they are called what they are called.

In today's lesson we start by reviewing the three electrical problems that are found out in the field. We move on to Electric meters and we look at the different settings that meters have on them. We look at multi meters and discuss which setting the meter must be set to so that you can find the electrical problem you are looking for. In this lesson we go over Volt meters, AMP meters, OHM Meters, continuity testers, capacitor testers and we even discuss when you should be using a Megger. Each of the meters above is described in this lesson so that the student can understand when to use each individual meter.

In this lesson we will be reviewing the electrical problems, the types of meters used out in the field to troubleshoot electrical systems and discuss contactors and relays. We will discuss which meter you will need to find the electrical problem that is keeping your equipment from running. We will look to see what a contactor is made of, what is in it and basically how it works. We will look at the contact ratings, coil ratings and which contactor to use with an inductive load or with a resistive load.

In this lesson we look into how electricity is distributed to Homes and to commercial buildings. We will look at how electrical power is stepped down to a manageable voltage so that we can use it in buildings and in residence. We will explore power distribution and go into transformer connections. We look at multi tap transformers and how they should be wired to get the proper voltage from the transformer. We discuss primary voltage; secondary voltage and we cover VA ratings on transformers.