Hi All

Could really use some advise. Lets paint my situation. I recently had my 220v garden ground lights replaced by an electrician due to the previous lights not working from corrosion and tripping the earth leakage. There are 3 outdoor ground lights in total. These light are also connected to 5 outdoor wall lights. All the lights are fed through a normal plug outlet in my garage. The ground lights were disconnected from the wall lights due to the tripping issue.

After the electrician installed the new ground lights everything worked fine but then after the first rain the lights tripped the earth leakage. The ground lights were encased in concrete and he initially used the original wiring for the ground light. He came back and changed out the cable for the ground light using surfix from flat twin and earth. He also used a waterproof connector for the surfix to ground light cable. The next time it rained it tripped again and I had to disconnect the ground lights again from the wall outside lights.

He now wants to come back and move the feed from the socket outlet in the garage to a light switch that is not on earth leakage.

My question is:

Is it safe to have 220v outdoor ground lights on the light circuit that is not on earth leakage?
If there was a puddle over these ground lights wont i get electrocuted due to the current issue?
Should he not fix the fault that's causing the earth to trip. All the other outdoor lights are fine even in the rain, it's only when the ground lights are connected and it rains then it trips earth.

Thank you very much