Binding posts are chassis mounted connectors which allow for the connection of bare wires, spade lugs, banana connectors, or pin connectors. They are commonly used on electronic test equipment and contains a central threaded metal rod and a cap that screws down on that rod. The cap is usually insulated with plastic and colour coded:
Red - active or positive terminal
Black - inactive or negative terminal
Green - earth (ground) terminal
Binding posts allow the connection of various connections:
Banana plugs
Pin connectors
Bare wire
A lug terminal
An alligator clip
Applications include:
Aerospace
Defence
Military
Signal processing
Audio
Consumer Electronics
Industrial