When you ask any company that carries out electrical conversions to American RV Motorhomes, they will probably tell you that they carry out the best conversion, but do they? This does not have much bearing on the answer to my question; you cannot trust the price either.
An electrical conversion can be carried out in many ways. One method is to use the original 110 volt wiring that is used to power the American sockets, by replacing the sockets with English ones that we are so used to seeing. If this is done then you end up with some of the sockets fitted on their sides, which to me is not correct.
The original wiring used on American RV motorhomes is rigid, which with any vehicle that flexes is not a good idea; even the caravan council would not let a caravan be produced with that type of cable.
Now for a bit of science, the size of the cable to be used is to be determined by the amount of amps it needs to carry. If you half the amount of volts you use you need to double the thickness of the cable, and that is why the cable is so thick in American RV Motorhomes. Now this thick cable is very difficult to use when connecting to the sockets, which could cause the connection to become loose, in turn causing a fire.
The best way to carry out a US to Euro conversion is to add a new 230 volt loom of flexible cable to the vehicle, if you do this then you can put the sockets facing the correct way round and also where you want them, and not where the American plugs originally were.
With leaving the 110 volt system the same as it came from the manufacturers you do not run the risk of introducing weakness in the system, which in turn could be very dangerous.
The land line cable which comes with the RV is very heavy and coloured black, a lot of companies just put a plug on the end of it making it awkward to use and store, and when plugged in becomes a trip hazard at night.