Do your GC protected with fuses??

[Leolabs]

Main fuse or rail fuses or both????

 

[DJ Exprice]

List of best to not-best:


Best: Both
2nd best: Main
3rd best: Rail
Bad: No fuse😱!

There you go.

 

[peranders]

You must have a primary fuse at least at all times! Unless the transformer is shortcircuit proof like some small ones are. The picture below shows such a transformer, from german Hahn.
http://home5.swipnet.se/~w-50674/hifi_pics/hifi_100pr/qrv07r0_overview.jpg