When you have a new baby turning into a toddler, you essentially child-proof your home. Breakable objects go up on high shelves, knives or forks are never left down where he can get it, the poisons (cleaning fluids, insecticides, etc.) are kept inside a cupboard that you may have to lock to have full security, and on and on and on.
It is no different with a young animal. I didn't find electrical tape a deterrent and didn't know about all these interesting rub-on things. Best to put cords inside the split tubing or the special plastic conduits made to run electric wires down inside walls. You can screw plug strips into the wall that have an on/off button, so that instead of yanking things out of the wall, you simply turn all the plugs on one side of the wall off when you are not expressly using the cords. All conduits, cords in tubes, etc. should be ancored to the walls or floor skirtings with proper plastic coated u-shaped nails -- can't remember the English rod for them right now. All cords that have to go across the floor to a lamp or TV, etc., should be anchored with heavy tape to lie perfectly flat, with no raw or loose edges on the tape. You can use furniture defensively to block off spaces where cords have to rise to an appliance. Don't think of the nuisance of the problem. Think positively about protecting the cat. You will come up with clever and innovative solutions and then you can tell us what works best.
Your cat may be trying to get your attention. They are clever that way. Have you tried quiet quality time with the cat on your lap while you read or watch TV? Sometimes young cats get hyperactive, just like children. You might also get your cat another cat (I recommend a female, since males accept them more readily, even neutered males).
Anyway, do share your solutions with everybody. This isn't just your unique problem.