Code Hunter: Workplace Safety & Electrical Safety Month

1. Equipment intended to interrupt current at fault levels shall have an interrupting rating at nominal circuit voltage __________ the current that is available at the line terminals of the equipment.

2. On a 3-phase, 4-wire, delta-connected system, the phase with the higher voltage to ground must be the __________ phase if installed in a panelboard, switchboard, or switchgear.

3. Unless modified by Article __________, all other NEC requirements apply to temporary wiring installations.

4. For service equipment rated __________ or more, the additional labeling requirements of 110.16(B) are required for other than dwelling units.

5. Overhead service conductors must have a vertical clearance of not less than __________ feet above residential property for voltages not exceeding 300 volts to ground.

6. If the highest __________ trip setting that a circuit breaker is rated or can be adjusted to is 1200A or more, an arc energy reduction method must be employed.

7. If the NEC requires a disconnecting means to be lockable in the open position, the provisions for locking must remain __________ the lock installed.

8. If the required disconnecting means for a transformer is located in a remote location, its __________ must be marked on the transformer.location

9. By special permission, smaller working space depths than 110.26(A)(1) would require are allowed for equipment whose live parts operate at no more than __________ volts RMS.

10. A receptacle’s grounding terminal shall only be used for connection to the __________ conductor.

11. Is a 2- or 3-pole circuit breaker required for a multiwire branch circuit?