According to the sample sheet of a typical "List of Motors and Controls" as shown in the illustration, which of the following motor applications features a motor enclosure designed for dusty, wet, and hazardous locations? See illustration EL-0204.
• Review how motor enclosures are labeled on the sample sheet (e.g., DP, TE, EXP). • Understand that enclosures for dusty, wet, and hazardous locations are usually more protective than standard drip-proof or weather-protected types. • Match the enclosure type in the table to the correct motor application listed in the left-hand column.
• Which enclosure description in the "Encl" column specifically suggests use in hazardous or explosive areas, not just normal engine-room or weather-deck service? • For each of the four answer choices, what enclosure type is shown on its row, and does it indicate protection against dust, moisture, and hazardous vapors? • Are any of the motors associated with handling flammable liquids or vapors, which would most likely need a hazardous-location enclosure?
• Verify the exact wording or abbreviations in the Encl (enclosure) column for each of the four listed applications. • Make sure you distinguish between drip-proof (DP) / weather-protected (WP/TE) and explosion-proof (EXP) or similar hazardous-location ratings. • Confirm that the application you select is the only one whose motor enclosure is clearly marked for hazardous or explosive environments on the sheet.
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