They DO have Live voltage running through them all of the time, the wires have to be shorted together to complete the circuit and allow for the current to flow, (this is what the burner switch does) in a perfect world you would not see this voltage until the switch is engaged, however if you short them together you will see live Voltage, (very easy to do changing out the element) I work on 4800 VAC, 480 DC power with more than 200 amperes of current displacements all of the time, everyone who does RESPECTS that high of voltage and current, unfortunately it is ignorance to household 110 VAC, 220 VAC that gets people killed every day, if you do not prove a circuit dead, you are asking to be shocked and perhaps to be killed