One of my cats (Maja) chews on cords and cables! She only does it to the smaller ones, such as iPhone and Macbook charger cables.
Does your cat do this?
The only way for us to prevent her from doing it is keeping them out of her reach and sight.
#1 She doesn't seem to be phased by bad taste haha. I even put cayenne lemon spray on the cords and she is still interested in them. #2 #3 Yeah Maja only likes to chew on cords that are very thin, like headphone cables and iPhone charger cables. Normally they are not plugged into anything. She stays away from the appliances thankfully.