Final answer:
A fire caused by electrical wires in a photocopier is classified as a Class C fire, which involves electrical equipment.
Step-by-step explanation:
The electrical wires in a photocopier that catch fire would be categorized as a Class C fire. This class of fire is related to electrical equipment and requires specific methods to safely extinguish it without causing harm to the person or further damage to the equipment. Examples of Class C fires include short-circuited computers, overloaded electrical outlets, and in this case, a photocopier with an electrical malfunction leading to a fire.