The key inspection processes for electrical sockets
Critical Inspection Processes for Electrical Sockets
Documentation Verification
Check compliance certificates (e.g., UL, CE, TUV, RoHS)
Review product specifications against purchase order requirements
Confirm packaging/labeling accuracy (voltage/current ratings, warnings)
Visual Inspection
Housing integrity: No cracks, deformations, or sharp edges
Contact slots: Proper shape/size (e.g., NEMA 5-15, BS 1363, etc.)
Color consistency and surface finish quality
Correct branding/marking permanence
Dimensional & Mechanical Checks
Verify plug slot spacing with go/no-go gauge
Test grounding pin alignment (if applicable)
Confirm mounting hole positions and screw compatibility
Check shutter mechanism operation (safety sockets)
Electrical Safety Testing
Insulation resistance test (≥5MΩ at 500V DC)
Dielectric strength test (e.g., 2000V AC for 1 minute)
Continuity verification of live/neutral/ground paths
Polarity check for wiring terminals
Functional Testing
Insertion/extraction force test (using certified plug testers)
Contact grip strength measurement
Switch operation (for switched outlets)
Tamper resistance verification (if applicable)
Material & Durability
Flame retardancy check (UL94 V-0 or equivalent)
Terminal screw torque retention test
Impact resistance assessment (IK rating where required)
Packaging Audit
Shock/vibration protection adequacy
Moisture barrier inspection (for sea shipments)
Retail packaging completeness (manuals, accessories)
