The track can fully handle 20 Amps, but because of field installation conditions such as the quality of existing building wiring, track distance run, number of connections, etc., it is common practice to de-rate the track by 20%.
The 4th Amendment, one of the most contraversial amendments ever drafted, was added to the Bill of Rights on December 15, 1791. The idea of being secure in your home, however, goes back into the Pre-Revolutionary period.
Author of the First Amendment No single person wrote the amendment. The Bill of Rights was developed by the first congress in 1789. However, James Madison can be credited with writing this and much of what we see in our first ten amendments to the Constitution.