Contactors: how we power the big stuff
16:36
Timer switches: literally just a clock and a switch
18:40
Power outlets are topsy turvy - but does it matter?
19:48
Why Are Cooling Towers Shaped Like That?
30:03
A troubling trend in lighting?
15:14
The most deadly project on the Internet
11:58
How much thrust does a ceiling fan produce?
25:48
Perhaps the weakest link in the US electrical system
21:48