Mission Overview

• Receive incoming utility power at the panel
• Route current to branch circuits
• Cut power when current exceeds safe levels

Inside the Panel

• Main breaker disconnects all power
• Hot bus bars distribute the current
• Neutral and ground bars handle return and faults

Power Route

• Trace service line from the street
• Power feeds hot bus bars through main breaker
• Branch breakers feed individual circuits

Pole Types

• Single-pole supplies 120V for lights, outlets
• Double-pole supplies 240V for heavy appliances
• Each breaker is rated for safe amperage

How a Breaker Trips

• Fault sends too much current
• Internal mechanism detects the overload
• Breaker switches off to protect wiring

Read Like an Operative

• Check labels and map every circuit
• Identify the main shutoff first
• Keep the area clear and accessible