Bathroom fan.

We have booked for an another electrician for double checking the bathroom extracting fan. I was wee bit nervous as the previous one had replaced the fan with the generic one not the Manlove brand one. Hence he did not connect the power cable via a coupling but by stripping wires.  Bathroom is usually filled with high density moisture and the chance of getting wet is higher than any other place in the house. Fortunately he confirmed that the work had been done according to the proper standard so we can use the fan with a peace of mind. So far so good?