I have concrete garage inside the hill below house level. Electrical metal conduit runs underground and enters the garage at the top of concrete wall. It may 12"-15" below surface. See pictures.
It's ok most of the time but during heavy and long rain, electric box inside garage starts leaking.
Electrician who installed it put some concrete around conduit but it's not a lot and obviously not enough. I dumped bucket of water there and I observed that leak happening.
So is there a good way to waterproof it? I am thinking - dig around the conduit, put something around it and then pout much more waterproof concrete (or whatever suitable material).