Southwire 55278323 AC Cable by Southwire. $60.73. AC 90 steel armored cable is black striped color coded. Flexible and efficient, no couplings or elbows needed. Copper conductors are THHN 90 C. rated. 16AWG internal bonding wire and the outer armor form the grounding path. Anti short bushings included. Permitted for branch circuits and feeders on both exposed and concealed work. Dry locations only. UL listed.. Save 12%!
The Electric Spud (a. the potato battery experiment) Bell Ringer: Can you make a Battery out of two potatoes? Have the kids think upon it, then give you their Hypotheses, then as a class make a potato battery.
Enjoy this sorting freebie for conductors and insulators. Use this sorting activity to spark conversation with your students on the quality and difference between the various types of insulators (some being better than others).