Welcome to the forum.
We have feral hogs where I live. Folks use field fencing to keep them out though dear hubby tells me that the hogs will go under the
fence.
We had a
chicken wire fencing off the garden. Those feral hogs flattened the
chicken wire and ate all my Egyptian Walking Onions. They are growing back though those hogs might come back any day.
I am not sure what high tensile electric wire is.
We use electric wire and electric tape for
deer.
For that to work on pigs it would need to be where the wire will hit the pigs.
Do they have thick skin so that the shock will need to be high?