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29 Cards in this Set
- Front
- Back
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Electricity |
The flow of electrons between atoms in common wire materials |
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Current flow |
The flow of electrons |
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Voltage |
The pressure pushing the current flow |
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Insulators |
Have few or no free electrons to share, they resist current flow |
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Conductors |
Have many free electrons in the atoms orbit that are easily transfered between atoms |
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Direct Current |
Electrons flow in a single direction |
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Alternating current |
Voltage or current that changes |
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Electrons |
The part of a atom that changes position from atom to atom which creat current flow. (The movement of electrons) |
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Volt |
Pressure that pushes electrons through a circuit |
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E |
Common vultages used in HvACR are 24, 120 ,208 ,240 and 480 v |
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Control voltage |
Electrical section of the HVACR system that manages the on and off cycles. |
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Ampere |
Is a measure of electron movement in a circuit. |
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Resistance |
The force that slows down the flow of electrons in a circuit |
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Watt |
The term watt is a reference to the power consumed by a circuit |
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Load |
A component that has resistance to electron flow |
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Complete circuit |
A path through which electricity flows |
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Open circuit |
An open circuit is one that has a break or opening in the wire or load |
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Short circuit |
Occurs when the power goes to the ground or.when the load has verry low resistance |
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Series circuit |
a circuit that has only one path |
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Parallel circuit |
A circuit with parallel paths for current flow |
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Combination circuit |
A circuit that combines series and parallel circuits |
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Voltmeter |
A electrical instrument used to measure voltage |
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Ammeter |
Electrical instrument used to measure amperage |
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Ohmmeter |
used to measure resistance in a load |
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Electrical symbols |
Used to represent electrical components in a. Wiring diagram |
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Electrical legend |
Shoes what each symbol means |
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Cap |
Dual run capscitor |
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Ch |
Crankcase heater |
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Wiring diagram |
Road map of a electrical system |
