Hi,
I Have a lot of these to do in my area as the park owners picked up on the "If used frequently then every 12 months " part in the regs. Small percentage of owners have decided they know best and they never have their houses tested so why test a caravan.Have tried explaining the difference between bricks and mortar and an alluminium box in a field but to no avail.Always find more problems in ones that have porches and the like as they usually did the wiring themselves. Zs readings are sometimes way over as the source of the installation is sometimes 200 yards away.Remember if the home is let out it must have pir and pat test every year.As to your point about new ones,they are all tested when they leave the factory But when arrive there is no certificate and have been shaken around a lot with the obvious results. Also when the heating engineer has finished repairing the faults and leaks ask him how old the boiler is and you will maybe find its a year old at least already.
Hope this of use.
