1 / 10

100 likes | 470 Vues

Fundamentals of Electricity. Or…how to wire a plug without electrocuting yourself or half a dozen of your co-workers!. Electromotive Force (EMF). Measured in: Voltage (E) Amperage (I…for inductance) And Resistance (R). Electromotive Force (EMF). Voltage or Electromotive Force

Télécharger la présentation
## Fundamentals of Electricity

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Fundamentals of Electricity**Or…how to wire a plug without electrocuting yourself or half a dozen of your co-workers!**Electromotive Force (EMF)**• Measured in: Voltage (E) • Amperage (I…for inductance) • And Resistance (R)**Electromotive Force (EMF)**• Voltage or Electromotive Force • Measurement of potential at any point in a circuit • Another way to understand it is as pressure. • Measured in Volts**Electromotive Force (EMF)**• Amperage or Inductance • Measurement of the flow of current through a circuit at any given point. • Sort of like volume or flow of water through a pipe. • Measured in Amps • Inductance is the generation of an electromagnetic field by the flow of electricity through a wire or coil of wire.**Electromotive Force (EMF)**• Resistance • Resistance to the flow of electricity at any given point in a circuit. • Measured in ohms. • Ohm’s Law: As Voltage increases, Current increases; As Resistance increases, Current decreases.**Electromotive Force (EMF)**• The formula: E=IR where E=voltage, I=current, and R=resistance. • Other configurations include I=E/R, and R=E/I • An easy way to remember is “Eagle, Indian, and Rock.”**The Power Formula, W=VA**• Used to calculate (based on two knowns) • Wattage consumption • Current • Or Voltage • Easiest way to remember as the “West Virginia Law.” • Other configurations include: A=W/V, and V=W/A**Wire Gauge**• Standard sizes specified by the National Electrical Code (NEC) • Larger the number the smaller the diameter of the wire. • Gauge 10 12 14 16 18 Amps 25 20 15 6 3**Electrical Circuit Types**• Series Circuit: Voltage is shared equally with each load in the circuit. • Parallel Circuit: Amperage is shared equally with each load in the circuit. • A “LOAD” is any element within a circuit that resists –but does not halt- the flow of current (lamp, motor, or resistor, etc.)**Electrical Current**• Direct Current • Electron flow is in one direction and at a constant rate • Alternating Current • Electron flow changes direction (polarity) in regular, repeated cycles.

More Related