hvac

what is the legend used for on a schematic

• to find certain parts of the unit

• tells us the flow of the current

what color is the hot wire

• green

• blue

• black

what color is the common wire on a thermostat

• yellow

• white

• blue

what color is the ground wire when wiring a switch

• copper

• green

• red

which paths will a current flow

• the path with less resistance

• the path with most resistance

what is the purpose of the neutral wire

• send neutrons back to the power supply

• so the board gets fried

• send electrons back to the power supply

what is the function of the capacitor

• sends 120v back to the system

• gives you 12 ohms when testing with a multimeter

• stops the current to build up charge

what does this symbol represent

• ohms

• amps

• voltage

what does this symbol represent

• volts

• continuity

• dc current

what symbol is presented here

• open switch

• closed switch

• glasses