I seem to remember there has been a resent clarification about mobile homes, caravans, and the like, where it has said the statement "NOTE:
In the UK the ESQCR prohibit the use of a TN-C-S system for the supply to a caravan or similar construction." applies to mobile homes. But this is the site where the mobile home is connected to power, if you look at a normal EIC or EICR with no power most the tests simply can't be done.
Ze at origin and PFC will be what ever the socket it is plugged into has so
In my case, what I have created is an "Appliance" and I PAT test it.
seems to be a sensible approach.
As soon as a caravan is unplugged and transported to another site, any electrical test is invalid, to provide a test sheet which looks like a EIC or EICR could result is some one not doing the required on-site tests.
There should be a label
Fig 721 - Instructions for electricity supply
| INSTRUCTIONS FOR ELECTRICITY SUPPLY TO CONNECT|
I. Before connecting the caravan installation to the mains supply, check that:
(a) the supply available at the caravan pitch supply point is suitable for the caravan electrical installation and appliances, and
(b) the voltage and frequency and current ratings are suitable and
(c) the caravan main switch is in the OFF position.
Also, prior to use, examine the supply flexible cable to ensure there is no visible damage or deterioration.
2. Open the cover to the appliance inlet provided at the caravan supply point, if any, and insert the connector of the supply flexible cable.
3. Raise the cover of the electricity outlet provided on the pitch supply point and insert the plug of the supply cable.
THE CARAVAN SUPPLY FLEXIBLE CABLE MUST BE FULLY UNCOILED TO AVOID DAMAGE BY OVERHEATING
4. Switch on at the caravan main isolating switch.
Check the operation of residual current devices (RCDs) fitted in the caravan by depressing the test button(s) and reset.
IN CASE OF DOUBT OR, IF AFTER CARRYING OUT THE ABOVE PROCEDURE THE SUPPLY DOES NOT BECOME AVAILABLE, OR IF THE SUPPLY FAILS, CONSULT THE CARAVAN PARK OPERATOR OR THE OPERATOR'S AGENT OR A QUALIFIED ELECTRICIAN.
Switch off at the caravan main isolating switch, unplug the cable first from the caravan pitch supply point and then from the caravan inlet connector.
Preferably not less than once every three years and annually if the caravan is used frequently, the caravan electrical installation and supply cable should be inspected and tested and a report on their condition obtained as prescribed in BS 7671 Requirements for Electrical Installations Published by the Institution of Engineering and Technology and BSI.
This label is basic saying the user must check when the caravan is on site, the PIR became the EICR, but the report would need modifying to allow for fact it is going to be moved. As long as some where in the report you have some thing like "I being the person responsible for the Design, Construction, Inspection & Testing of the electrical installation (as indicated by my signature below), particulars of which are described above, having exercised reasonable skill and care when carrying out the Design, Construction, Inspection & Testing, hereby CERTIFY that the said work for which I have been responsible is to the best of my knowledge and belief in accordance with BS 7671:2018, amended to .............(date) except for the departures, if any, detailed as follows." that is enough.
The normal form has many items which are not applicable.
So to use the form would seem pointless, I would design my own form with all the useless bits left out, and issue it as a certificate, but of your own design, so there is no information as to supply characteristics as this will clearly change site to site.