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Wiring for Single Family Dwellings

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These guidelines have been prepared to assist the lay person in complying with the requirements of all Longmont adopted Electrical Codes, and assure the installation of a safe and reliable electrical system. This guideline is not inclusive for every installation and is not an instruction manual. The following topics will be addressed:



  • Electric Service
  • Branch Circuit Wiring
  • Required Branch Circuits
  • Required Receptacle Outlets
  • Required Lighting Outlets
  • Ground Fault Protection
  • Required Disconnection Means
  • Conductor Fill
  • Equipment Grounding Conductor Make-Up
  • Electric Heat Circuitry
  • Rough-In Inspection
  • Final Inspection

Along with meeting NEC requirements, the permit and inspection process defined by ordinance must be followed. If for some reason, the job does not meet the requirements of the NEC and an extra visit is necessary, a re-inspection fee may be required before the inspector can return.

See the currently adopted codes and local amendments. In addition, check with Longmont Power and Communications (303) 651-8386) for their requirements.

For additional information about this information or the permitting process, please contact Building Inspection at (303) 651-8332 or


In English:

Wiring Guidelines-Single Family Dwellings (PDF)
Electric Service Application(PDF)

En Espanol:

Alhambrando una Habatacion de Familia (PDF)

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