I'm wondering if I have to upgrade the electricy mains (cables, outlets, circuit breakers...) of a very old house (must have been built in the early 1900s) we'd like to rent for very short stay. All electrical circuits are working fine even if sometimes the Earth is missing. Can't find anything suitable. Any ideas?
To be precise, it's located in France, the kitchen and the bathroom have been fully revamped, including the electrical circuits.