Is the outdoor AC power supply normally open or normally closed

What is a normally closed vs normally open switch?

Normally closed (NC) and normally open (NO) contacts are terms used in the context of electrical switches and relays, but what’s the difference between a normally closed vs normally open switch? These terms describe the default state of a contact in a switch or relay when no external force or input is applied.

What is a normally open & normally closed circuit?

This is where normally open and normally closed contacts come in. In a circuit with normally open contacts, electricity doesn’t flow through the circuit until you actuate the switch. So the circuit is open (not complete) when the switch is in its normal, resting state.

What are normally closed vs normally open switch contacts?

Normally closed (NC) and normally open (NO) contacts are terms used in the context of electrical switches and relays, but what’s the difference between a normally closed vs normally open switch?

What does it mean if a switch is open or closed?

A normally open contact means the electrical circuit is broken by default, and current cannot flow until the switch is activated. Conversely, a normally closed contact means the circuit is complete by default, allowing current to flow until the switch is activated.