To answer Deans question, yes a trailer tent will need a PIR if it wants to connect up to a site EHU, as do motorhomes.
From John L's post " I have to agree with the strong view about the time to perform the PIR, 4 hours seems unprecedented"
Unless you have done the course and done the testing you cannot make a statement like that.
As you know, caravan and leisure vehicle electrics are not exactly easy to work on, but the tester has to disconnect all appliances from the circuit, plus chargers, lights and any other electronics which may be attached to the main wiring.
Also every socket has to be opened up to test each connection, then after all the tests are completed, all put back together again.
Failure to disconnct any appliance will lead to damage to that appliance when the 500v insulation test is carried out.
4 hours is assuming everything goes well, if problems are found, it will take longer.
Hi Damian,
I have not done the PIR course, so you are correct I don't know the detail, but I did qualify under the 16th edition to do installations, and to certify them.
You have taken my comment regarding the 4 hours suggested as the time to perform a PIR on a caravan out of specific context, I qualified the sentiment in the remainder of the paragraph.
I'm not disputing that following the prescribed PIR procedures may take 4 hours, but I suggested that as the knowledge base of test results grows, any items of the current prescription that consistently produce no problems, then hopefully the standards committees will review the need to perform that particular aspect of the test or even drop it.
Just as a theoretical senario, if power cabling is run in closed sections of furniture, it is quite likely that it will not deteriorate. It is not open to abuse as it is protected. Consequently the time needed to expose such cabling for inspection and then reassemble is wasted. Provided the bulk of inspections finds the same very very low levels of problems, perhaps this aspect of the test may be found unnecessary and at review of the standard it may be dropped or made conditional on other indicative criteria. Its these sorts of non value issues that will bring the process into disrepute.
As for the inspection period, unless there are some very clear guidelines laid out with measurable criteria, I don't see how a tester can professionally cover them selves except to require a 12month inspection. - how is the tester to know what level of usage a caravan will receive over the valid period of a report?
We are still in the very early days of the process, and, as and when it come fully on line we will begin to get feedback about real times and costs.
I do agree the periodic testing of both gas an electrical systems should become compulsory, but I still believe though that 4 hours per caravan is disproportionate for electrical testing considering the size of the installation and the level of use such systems are put to throughout the year. This is a very considerable on-cost to the annual ownership and use of a caravan.