| A | B |
|---|
| Volt | The measure of electrical pressure |
| Ampere | The flow of actual electrons |
| Watt | A measure of electrical power |
| Ohn | The measure of electrical resistance |
| V | Volts |
| A | Amps |
| W | Watts |
| Kilowatts | 1000 watts |
| KW | Kilowatt |
| Circuit | Consists of three parts -- voltage source, load, and at least 2 wires |
| Neutral | Takes used electricity back to the source |
| Hot | Takes power to the load |
| Ground | Serves as a safety return to the earth |
| White wire | Neutral |
| Black wire | Hot |
| Red Wire | Used when 2 hots are needed |
| Green or Bare | Usewd as the ground wire |
| Series circuit | When devices are attached so that electricity must pass through all devices to return to source. |
| Parallel circuit | When alternate paths are provided for the electricity to return to the source. |
| Combination Circuit | When some devices(switches) are hooked in series and others (lamp holders are hooked in parallel |
| Current carrying conductors | Neutral and Hot |
| Non current carrying conductor | Ground |
| Voltmeter | used to measure electrical pressure |
| Wattmeter | Used to measure electrical power |
| Ohmmeter | used to measure electrical resistance |
| Ammeter | Used to measure electrical current |
| Meter is hooked in parallel | Voltmeter |
| Meter is hooked in series | Connected type ammeter |
| Meter is hooked both in series and parallel | Wattmeter |
| Induction type ammeter | Placed around either the hot or neutral wire, but not both |
| Reserved colors | White, green, and bare |
| 230 volt circuit | Uses both black and red hot wires (often times without a neutral) |
| 115 volt circuit | Uses a black hot and a white neutral |
| 440 volt | Used to run very large motors, like at Farmer's Elevator |
| 208 Volt | When the service entrance use the wye type of transformer |
| Meters have their own power source and connected when power is off | Ohmmeter |
| Ohms law Circle | Uses V over A times R |
| Wattage Circle | Uses W over A times V |
| 2 | Number of variables needed to solve Ohms Law Circles |
| Volts are equal through the circuit | Parallel circuit |
| Amps are equal through the circuit | Series Circuit |
