Definition. A nucleic acid that contains the genetic instructions used in the development and functioning of all modern living organisms. DNA's genes are expressed, or manifested, through the proteins that its nucleotides produce with the help of RNA.
Intelligent transfer switch. A transfer switch is an electrical switch that switches a load between two sources. Some transfer switches are manual, in that an operator effects the transfer by throwing a switch, while others are automatic and switch when they sense one of the sources has lost or gained power.
According to the 2002 version of the National Electrical Code, any transfer switch that serves Emergency class load must serve no other loads. If loads other than Emergency class are to be served by a standby power source, at least two transfer switches will be required. Furthermore, a larger number of smaller-ampacity transfer switches provides greater protection against branch circuit failures, so more and smaller is a good general principle.