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    1. Input may be through a coupler or gland.
    2. The outside surfaces shall be essentially of fireproof construction.
    3. If the input cable is protected by a ground-wire monitor that is terminated in the box, the enclosure shall include a ground-wire monitor test button.
    4. On single-output belt starters, the required circuit protection may be located in the load center.
    5. Each belt motor and/or belt auxiliary circuit shall have the following protection:
      • Phase fault
      • Overload
      • Ground fault (may be provided at the power center)
    6. Any output circuit for equipment not associated for the belt operation shall be designed in accordance with the load center criteria.
    7. The following required belt motor safety circuits shall include a manual reactivation:
      • Phase fault
      • Overload
      • Ground fault
      • Belt slip circuits
      • Pull cord circuits
    8. If the belt motor starter utilizes a programmable logic controller or other electronic controls, it shall comply with one of the following schemes to prevent starter operation due to failed outputs:
      • Hard-wired safety circuits
      • Status check feedback circuits
    9. Multi-motor starters utilizing plugs and receptacles shall have interlocks that trip all breakers when any plug is uncoupled. If the design of a motor (i.e. DC or synchronous AC) allows for generation of electrical power from a mechanical input, then precautionary measures must be taken to prevent electrical shock from regenerated power (minimum of warning labels).
    10. Any output circuits feeding power to stationary underground motors of one hundred brake horsepower or over shall be provided with a suitable meter to indicate the load on the machine.