I have a chicken wire fence 30” high, with 3 strands of electric fence on top. I have no problem with deer in the garden.
We often have deer in our yard, especially at night. Last year they really took a liking to the rose bushes right next to our house.
I want to put in a vegetable garden so I've been worried about this. Someone on FR gave me a recipe for deer repellant, but I haven't tried it out yet. I'm not sure I'd want to put in an electric fence 30" off the ground as I have a young child.
A child will touch an electric fence one time and never again.
The neighbor kids never bothered the electric fence. I told them about it, with their father present. If they touched it, I never heard about it.
Above the chicken wire I have three strands of electric fence wire. Spaced at 2 inches 2 inches and 4 inches.
That is all that is electrified unless something gets into it. But then the fence grounds out and don’t work at all until I fix it.
If you work the garden with the child they will be more interested in plant lore and not worry about the fence.
My boys, when young, loved to watch the garden grow and produce. They even helped pull weeds. Pick green beans etc. A garden can truely be a family affair.
Have a gate set up so the electric wires can be unhooked with the insulated handles. I leave the gate open when working around the garden. Even my cat stays clear, but will follow me in if the gate is open.
I really don’t think you need much concern about a child around the electric fence. The voltage is not deadly, but will jolt. But the fresh veggies are awesome.