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.
The third amendment was introduced into the United States Constitution as a part of the Bill of Rights on September 5, 1789 and was ratified or voted for by three fourths of the states on December 15, 1791. The Text of the Third Amendment.