Final answer:
An outdoor 5-30R receptacle within 2.5 meters of grade at an industrial plant must be weatherproof, GFCI-protected, and conform to local electrical codes.
Step-by-step explanation:
When installing a 5-30R outdoor receptacle within 2.5 meters of grade at an industrial plant, it is required that the receptacle be weatherproof and have an enclosure that is suitable for damp or wet locations. In addition, the receptacle should be connected to a ground fault circuit interrupter (GFCI) to protect against electrical shock hazards. Furthermore, it must comply with any local electrical codes and standards that apply to outdoor receptacle installations in industrial settings.