"Me" wrote in message ...

Suggest also subject to the "fused switch" having a fuse of rating
appropriate to the transformer and it's cable.

IMHO this is not really advisable on grounds of accessibility. However if
you (the OP) are intent on doing it then ensure that the transformer has
some form of built in thermal protection ('thermal fuse' or PTC device).
The fuse in the FCU must be assumed only to protect the cable to the
transformer and not the transformer itself.

An unprotected transformer could develop shorted turns, overheat and start a
fire under the floorboards - unlikely, but not unknown...

--
Andy