Back in the day and prior to a couple of job changes I experienced these electricians too. To be fair I think most people involved anywhere close to education have though.... Anyway echoing comments above, on more than one occasion the company I worked for at the time was called in to re-fit 15A plugs (I am sure there was one school we had to go in 2 or 3 years running). I also believe that some of our invoices were also passed on to said electricians to pay back! For many of the schools we were able to set up a testing contract to PAT all of the production items as well as required electrical testing. I remember speaking to many schools about this though, whose attitude was its ok they don't need testing we only use them once a year, or they don't need testing as they are up high out of the way.... (this was the 90s though)