I have been troubleshooting electrical circuits for over 25 years. I don’t want to suggest that learning and understanding electrical Theory Is not important for an electrician, but hands on electrical experience is the fastest way to learn how to become an electrical troubleshooter. Here are some basic electrical terms that you need to know before becoming an electrician.
Current is the flow of electricity. It is measured in amps. The current is a measured amount of electrical charge moving through a specific point in a second.This is similar to water and plumbing. Current is divided into watt’s. Alternating current or direct current. Alternating current flows in a direction, it reverses itself and flows in the opposite direction in your home electrical circuits. In the United States this happens sixty times the second it is also known as sixty Hertz in European home generally is it happens at fifty cycles per second. The two are not compatible. Direct Current flows in one direction your car battery is a great example it has a positive negative terminal that always is the same.
Voltage is the difference in electrical charge between two lugs. All circuits charge are measured in volts. Voltage is pressure. The amount of volts is the amount of pressure pushingelectricity. Wattage is the amount of electrical power. It is measured in watts. It can be found by multiplying the current or Amps times the voltage. For example 10 Amps times 120 Volts alternating current equals 1200 Watts. Resistance is a materials opposition or resistance to the flow of electrical current measured in Ohms.This is a simple way to show an example is a resistor. All motors transformers and lighting filaments create a resistance to the electrical flow. Without this resistance. runaway current would quickly destroy the circuit.
A series circuit supplies power to a number of devices or loads. It is wired so that the same current passes through each device in completing the path to the supply return. Generally speaking, series circuits are exclusively in direct current. Series Parallel circuits are a combination of Series wiring and parallel wiring and loads in the same wiring sequence. A load is the resistance in a circuit.A resistor,light bulb, motor, and a transformer, all possess a load resistance. This prevents runaway voltage. Alternating Current is very similar to magnetic. This polarity and resemblance to magnetic is essential to understanding electricity.