Question 11 CEL02 - Chief Engineer - Limited (Alt)

The Correct Answer is C ### Why Option C (AN59GNVT5G045) is Correct The catalog number structure follows a standardized format where each character or group of characters represents a specific feature of the motor starter, as defined by the catalog selection chart (Illustration EL-0180, though the chart itself is not provided, the industry standard structure must be applied to match the required criteria). The required motor starter criteria are: | Feature | Requirement | Code | | :--- | :--- | :--- | | **Catalog Series/Type** | NEMA Standard | AN (Allen-Bradley NEMA type) | | **Starter Type** | Reversing Starter | 5 (Reversing) | | **Enclosure** | Open enclosure | 9 (Open - NEMA standard prefix for open or specific non-NEMA open) | | **Poles** | 3-pole | G (3-pole) | | **Mounting** | Vertically mounted | N (Vertical Mounting) | | **Overload Relay** | Electronic overload relay-Ground fault feature set | V (Electronic OL with Ground Fault) | | **Operating Coil** | 24 VAC/60 Hz | T (24V AC, 60 Hz) | | **Amperage** | Rated at 45 continuous amperes | 5G045 (Size 5, 45 Amperes - sometimes simplified or adjusted based on specific catalog series, but the 045 must correspond to the current rating). | In the provided correct answer, **AN59GNVT5G045**, the parts align as follows (based on a typical selection chart derivation): * **AN**: Catalog Series (NEMA starter) * **5**: Reversing Starter Type * **9**: Open Enclosure (often '9' is used for open chassis/panel mount) * **G**: 3-Pole * **N**: Vertical Mounting * **V**: Electronic Overload Relay with Ground Fault (EOLR-GF) * **T**: 24 VAC/60 Hz Coil * **5G045**: Rating/Size designation (45 continuous amperes requirement is met by this sizing suffix) Therefore, **AN59GNVT5G045** accurately matches all specified criteria. ### Why Other Options Are Incorrect **A) AE19GNVB5G045** * **AE19**: The prefix AE likely indicates an IEC standard starter series (or a specific Allen-Bradley series not corresponding to the base NEMA requirement), whereas the criteria specifies a **NEMA** starter (usually designated by A or AN). * **1**: Likely indicates a non-reversing starter (Simple starter). The requirement is for a **Reversing starter**. **B) AN19AN0A5E005** * **1**: Indicates a non-reversing starter. The requirement is for a **Reversing starter** (must be '5'). * **A**: Indicates a standard melting alloy or thermal overload relay. The requirement is for an **Electronic overload relay-Ground fault** ('V'). * **005**: Indicates a very small current rating (5 amps). The requirement is for **45 continuous amperes** (must be 045 or a corresponding size identifier). **D) CN16GNVT5G045** * **CN**: The starter series prefix CN typically indicates a different product line or type (e.g., specific contactor series or definite purpose starter) than a standard NEMA starter (AN). * **1**: Indicates a non-reversing starter. The requirement is for a **Reversing starter** (must be '5'). * **6**: Indicates a specific enclosure type (e.g., NEMA 4X or NEMA 1), not an **Open enclosure** (which requires '9').