Final answer:
Double-insulated appliances normally have 3. insulated power cords and attachment plug caps to provide shock protection without grounding.
Step-by-step explanation:
Double-insulated appliances normally have insulated power cords and attachment plug caps.
Double insulation is a safety measure used in some portable appliances to provide shock protection without the need for grounding. It involves having two layers of insulation, instead of just one, between the electrical parts and the user. These appliances typically have an outer layer of insulation and an inner layer of insulation to protect against electric shock. The power cords and attachment plug caps of double-insulated appliances are specially designed to provide this extra insulation, ensuring user safety.