5 red wires in ceiling lamp (Ed.)

[SUNRAY]

Not sure why I haven't seen this thread before.

Going off the numbers of conductors, I would say from L-R:

Loop, SL, Neutral, Earth.

This can be confirmed with a multimeter.

And that would be my first assumption.
The thing about this situation is; if that assumption is wrong then placing a lamp across any of those terminals won't harm anything... assuming you don't have a 3ph supply.

 

[SUNRAY]

Where are the neutrals

Tht'll be red wires