Common Construction Errors

  1. Electrical Errors
  2. Mechanical Errors
  3. Plumbing Errors
  4. Structural Errors
Underground Conduit Depth
  • EMT (thin wall) buried in the ground
  • Heavy wall not buried the required 6' below grade
  • PVC conduit not installed 18' below grade
  • Direct burial cable not installed 24' below grade
  • Conduit not strapped
  • Connectors and couplings not tightened
Rough Walls
  • Boxes not fastened securely
  • Conduit not strapped 3' from any boxes
Rough Ceiling
  • Boxes not fastened
  • Closet fixture light boxes not 18' minimum from the back wall of the closet
  • IC type recessed fixture must be used if ceiling is insulated
Electrical Service
  • Bond bushing not installed on concentric knockout
  • Bond jumper on the neutral bar not installed
  • End of conduit for the ground conductor going to the ground rod not grounded
  • Ground rod at electric meter not driven 8' and below grade
  • Jumper wire at the water meter and proper ground tag not installed
  • Service mast shall be secured with proper type screws or bolts (not drywall screws)
  • Service wire not clearing the roof by 18 feet
  • Service wires not 10' above grade
Final Inspection
  • All devices shall be turned on for testing
  • All electrical equipment not complete, hooked-up and working
  • Breaker for A/C compressor is larger than manufacturer's label indicates for maximum overcurrent protection
  • Every fixture must have working bulbs
  • Island or peninsular counter outlets shall be mounted not more than 6' below the counter top and shall not be mounted where the countertop extends more than 6' beyond its support base
  • Motor for the jetting tub not grounded with a #8 AWG wire back to the conduit system
Wire Inspection
  • Box fill is exceeded (check Table 370-16 of National Electrical Code)
  • Outlets and switches not grounded to the junction box with a green wire, if the device is not self-grounding type