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  1. De-Energizing Equipment

    Unless justified, work on equipment must be done with the hazardous energy controlled, in the electrically safe work condition. To establish an electrically safe work condition, the electrical energy must be de-energized as follows:

    • Cord-and-Plug Powered Equipment where all incoming electrical energy can be controlled by the unplugging of the equipment (example: hand-held drill)
    • Hardwired equipment should be powered down according to the manufacturer’s instructions

    LOTO Form

  2. Justification for Energized Electrical Work

    Energized electrical work is allowed only under the following circumstances:

    • De-energizing the circuit will introduce additional or increased hazards (Example: Deactivation of required emergency alarm systems or the shutdown of ventilation equipment in a hazardous area)
    • De-energizing the circuit is not feasible due to equipment design or operational limitation

    Work can only be performed with the circuit energized, including:

    • Testing voltage, measuring amperage, or trouble-shooting
    • Setting up, tuning or calibrating equipment where adjacent electrical hazards exist and cannot be guarded
    • Business interruption, lack of lighting, and cost-considerations alone are not acceptable reasons for authorizing or performing energized electrical work

    Electrical Lockout / Tagout Form

  3. Classification

    Energized electrical work is classified into three categories at Apple, as follows:

    • Electrical Work Type 1 – Common Electrical Testing / Calibration: Voltage and current measurements, troubleshooting, tuning, etc. on exposed, energized parts that do not involve connecting, disconnecting, assembly, disassembly, tightening, or loosening energized connections or splicing energized wires.
    • Routine Energized Electrical Work: Energized electrical work that is NOT Electrical Work Type 1 and that is performed according to a written procedure approved by Apple EHS that includes electrical safety requirements (for example, AppleCare document)
    • Other Energized Electrical Work: Energized electrical work not included in Electrical Work Type 1 or 2
    • Once an Electrical Work Type is determined for the electrical work, the work must be authorized and performed using the safety precautions as described below. Under no circumstances should energized work be approved if potential arc energy could exceed 40cal/cm2 (see Section Seven: Standard Precautions)
  4. Training and Qualification

    To properly qualify Apple Authorized Electrical Workers in compliance with Cal- OSHA and NFPA 70E requirements, persons who perform energized electrical work must complete proper training.

  5. Standard Precautions

    To perform energized electrical work, some standard precautions must be followed:

    • Safe Work Practices must be understood and followed
    • Personal Protective Equipment and insulated tools must be used
    • Area access controls and signage must be in place
    • Special precautions must be implemented for wet and damp locations

    Energized Electrical Work Permit & Checklist

Your actions matter

Review Electrical Safety Procedures Safe Work Practices

EHS is available to help you review any electrical work you do and ensure you can de-energize circuits to avoid electrical hazards.  We can also guide you through the process to have energized electrical work performed if necessary.

Learn More

Understand Safe Work Practices

Employees working on electrical circuits must know the levels at which DC or AC will cause harm.  Safe work procedures are required to enable employees to work with electrical hazards.

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Tanisha Holmes

Your EHS site lead 

(916) 777-9000