A qualified electrical testing laboratory ___ electrical products to provide a basis for approval by inspectors in the field.

A qualified electrical testing laboratory ___ electrical products to provide a basis for approval by inspectors in the field.

• A. approves
• B. lists
• C. establishes ratings for
• D. tracks

Answer: (B)

Recognized electrical testing laboratories publish a list of products that have been tested and found to meet applicable safety standards. This listing provides field inspectors with a concrete basis to judge whether a product is acceptable for use in installations. The lab’s role is to test and list; it does not grant on-site approvals, and it does not establish product ratings—those are defined by standards and manufacturers. Tracking is not the function of listing; listing is the formal declaration of conformity that inspectors rely on.

Recognized electrical testing laboratories publish a list of products that have been tested and found to meet applicable safety standards. This listing provides field inspectors with a concrete basis to judge whether a product is acceptable for use in installations. The lab’s role is to test and list; it does not grant on-site approvals, and it does not establish product ratings—those are defined by standards and manufacturers. Tracking is not the function of listing; listing is the formal declaration of conformity that inspectors rely on.