Wiring checklist

Visual checklist and wiring diagram guide to help you inspect for faulty electrical wires safely and effectively:

Faulty Wire Inspection Checklist

Before You Begin:

• Turn off power at the breaker
• Wear insulated gloves
• Use a flashlight for dark areas

Visual Inspection:

• Check for frayed or chewed insulation
• Look for scorch marks or discoloration
• Inspect for loose or corroded connections
• Examine outlets and switches for cracks or heat

Tool-Based Testing:

• Use a non-contact voltage tester to detect live wires
• Use a multimeter:
• Continuity test: confirms wire is intact
• Voltage test: checks power delivery
• Use a circuit tester for outlet wiring

Common Problem Areas:

• Junction boxes
• Behind outlets/switches
• Near appliances or HVAC units
• Outdoor or attic wiring exposed to weather or pests

Simple Wiring Diagram Reference

[Breaker Panel]───(Black: Hot)────┐ ├───[Switch]───(Black)───┐ │ │ │ └───[Light Fixture] │ └───(White: Neutral)─────┐ └───[Light Fixture] [Ground]────(Green/Bare)──────────┘

• Black wires = Hot (live)
• White wires = Neutral
• Green/Bare wires = Ground