Master Electrician Practice Exam

What type of cord may be utilized for x-ray equipment installation if branch-circuit ratings adhere to guidelines?

1. Extension cord

2. Hard service cord

3. High-voltage cord

4. Flexible service cord

The correct answer is: Hard service cord

The appropriate choice for x-ray equipment installation is a hard service cord, primarily due to its durability and suitability for the application. Hard service cords are designed to withstand harsher conditions compared to regular flexible cords, making them ideal for environments where equipment may be subject to mechanical stress or where additional protection from external factors is essential. In the context of x-ray equipment, these installations often involve significant electrical and mechanical considerations. Hard service cords offer greater withstand capabilities against wear and tear, ensuring a reliable power supply while adhering to rigorous safety and performance standards. The hard service cord's construction generally includes a rugged outer sheath that protects against cuts, abrasions, and exposure to chemicals, which are important factors in a medical environment. Other types of cords listed, while useful in different contexts, may not provide the same level of protection or suitability for high-demand medical equipment installations. Extension cords are typically meant for temporary power supply and lack the durability needed for permanent installations like x-ray equipment. High-voltage cords are specialized for very high voltages not typically encountered in standard x-ray installations. Flexible service cords, although versatile, may not meet the specific durability requirements for medical devices under continuous use and high-duty cycles. Thus, the choice of a hard service cord aligns best