1. Alternating Current 60 HZ
Anatomy of A Sine Wave
Alternating Current
60 HZ

2. Voltage
&
current
Time

6. Current Lags Voltage

7. Current Leads Voltage

8. The Three Types of Current Referenced Against a Voltage

10. The values shown are the sine values at each 15 degree interval

11. Voltages of a poly phase system
240 Electrical Degrees
0 Electrical Degrees
120 Electrical Degrees

13. In This Case the current begins after the voltage so it “LAGS” the voltage
Time
(I) Current

15. Current and voltage are in phase

18. Notice the symbol L and the coil for an inductive load

19. Notice the symbol C and the plates for a capacitive load