Switch Loop. Switch Loop fed at light. Three Way Switch Three Way Switch with feed at light. Three Way Switch with more than one light. Four Way Switch Double Switch with one feed. Split Receptacle. Emergency Stop Second Phone Line
This is the diagram for a simple switch loop.
This is the diagram for a switch loop with the feed at the light. Please Note... The white wire marked (x) is a live feed from the switch loop, and must be marked as such.
This is a diagram for a three way switch.
This is a diagram for a three way switch with the feed starting from the light. Please Note...The white wire marked (x) is a live feed from the switch loop, and must be marked as such.
This is a diagram for a three way switch adding more than one light.
This is a diagram to turn lights off and on from more than two areas.
This is a diagram to show how to turn seperate lights on and off from two seperate switches in the same switch box, with only one feed.
This is a duplex receptacle with one half live and the other half on a switch. The tab joining the brass (live) terminals must be removed. The tab joining the silver (neutral) terminals must not be removed.
This is a diagram that uses emergency stop (e-stop) buttons to shut off a device or devices in case of an emergency. The switches for this diagram are of the manual push-pull type. When the button is pushed in the circuit remains open. When the button is pulled manually the circuit is closed.
The Phone junction box is usually located on the outside of the house or in the basement. The green and red wires are for the main line and a second line is usually black and yellow. 
