Thanks to answers here I now have bought the transformer and lighting tape.
The transformer has a two wire 240v input as you'd expect - two tails
What's the preferred way to connect a new mains cable to these two tails,
Depends what you are after... if you want a longer "tail", then flex,
crimps and heatshrink. For direct connection to fixed wiring, then a
junction box, or other enclosure with suitable terminals in it (wago,
crimp, chock block etc)
 Since the tails are usually flex rather than solid core, the leaver
action wagos would be better.
Ashley terminal box would be very good:
But ultimately any junction box with strain relief OR the flex and
cables being clipped near the entry points will be compliant and safe.
Are the tails single insulated or a sheathed flex?
If former, I don't know - I think I suggested to someone here with a
similar question to buy the RS PSUs that don't have that stupid arrangement.
Technically you'll have to contain all the wire in an enclosure - so if
it were me, I'd return it as not fit for purpose.
If it has a sheathed flex, then Wagos or terminal strip in an enclosure
is pukka and fine. Even something as simple as a surface box and
blanking plate with both cables clipped down as they enter (al la
central heating - you'll find a lot of this if you look near your tank
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