If a contact is installed in a metal door, a spacer is typically not needed as the metal door itself acts as a spacer in the circuit.
If a contact is installed in a metal door, a spacer is typically not needed. The purpose of a spacer is to provide a gap or distance between two objects, allowing for proper functioning or clearance. In the case of a contact installed in a metal door, the metal itself acts as a spacer, separating the contact from the rest of the door frame.
This metal-to-metal contact is important for the proper functioning of the contact, as it helps facilitate a closed circuit when the door is closed. When the door is opened, the metal parts of the contact separate, breaking the circuit and triggering an alert or signal.
Therefore, in this scenario, a separate spacer is not necessary as the metal door itself serves as the means of contact and separation in the circuit.
Learn more about Installation of a contact in a metal door