Which of the following would NOT be considered a defect in electrical work?

Wire splices, while they can be poorly executed or defective if not done correctly, are a common practice in electrical work for making connections between wires. If splices are performed with the right materials and techniques, they are considered acceptable and necessary for extending circuits or making repairs. When done correctly, they are not viewed as defects; rather, they are part of routine electrical work.

In contrast, damaged insulation, improper grounding, and exposed wiring all pose significant safety hazards and code violations. Damaged insulation can lead to short circuits or electrical fires, improper grounding can result in electrical shock or equipment damage, and exposed wiring creates risks of accidental contact with live electrical conductors. Therefore, while wire splices need to be done properly, they are not classified as defects in the same sense as the other options listed, which are clearly faults in electrical installations.