NECA 402 : 2014

Foreword
1. Scope
    1.1 Regulatory and Other Requirements
2. Definitions
3. Safety procedures
    3.1 General
    3.2 Safe Work Practices
    3.3 De-energizing Electrical Equipment
4. Delivering, Handling and Storing
    4.1 Delivering
    4.2 Handling
    4.3 Storing
5. Site Preparation
    5.1 Location
    5.2 Foundation Preparation
6. Installation
    6.1 General
    6.2 Installing Vertical Sections
    6.3 Joining and Anchoring Motor Control Center Sections
    6.4 Electrical Interconnections Between Vertical sections
    6.5 Grounding and Bonding
    6.6 Installing Conduits
    6.7 Installing Cables and Conductors
    6.8 Terminating Conductors
    6.9 Busway Connections
    6.10 Installing Motor Control Units
7. Closing Equipment
    7.1 Clean-up
    7.2 Inspection and Adjustment
    7.3 Insulation Resistance Testing
    7.4 Circuit Breakers and Fusible Switches
    7.5 Ground-Fault Protection Systems
    7.6 Final Checks
8. Energizing Equipment
    8.1 General
    8.2 Energizing Motor Control Centers and Equipment
    8.3 Operating and Maintenance Manuals
9. Maintenance
    9.1 Frequency of Inspection and Maintenance
    9.2 Routine Inspections
    9.3 Cleaning
    9.4 Inspection, Maintenance, and Testing
    9.5 Electrical Testing
    9.6 Re-energizing Motor Control Centers
10. Adverse Circumstances
    10.1 Inspection Following a Short-Circuit or Ground-Fault
         Condition
    10.2 Replacing or Reconditioning a Motor Control Center
         Submerged in or Soaked by Water
    10.3 Inspecting and Re-energizing a Motor Control Center
         Sprayed or Splashed with Clean Water
11. Recommended Torque Values
12. Motor Control Center Insulation Resistance Chart
Annex A: Reference Standards

Specifies the installation and maintenance procedures for low-voltage motor control centers (MCCs) rated 600 VAC or less with a horizontal bus rating of 2,500 amperes or less.