I too had a "Noddy Suit" - as they were known - but was forbidden to ever put it on until I was told to. Apparently, once you had (put it on) it had to be discarded after 24 hours - and a new one substituted.
We had a Quartermaster who threatened us with a "fate worse than death" , if we opened one up.
Needless to say, "forbidding" was a challenging word - we did - but they were so b****y uncomfortably hot & sweaty, we just packed them back up - and told no-one! How that stupid thing would have ever saved us though - goodness knows! I humped the darn thing around for years (kept my spare bog-paper rolled in it too!)
As to unplugging electrical stuff - anyone got a non-electrical radio set? (Okay - clockwork one then?). Now, where's me flags - and boy scout semaphore booklet?
Alpha, Bravo, Charlie........................
First idea was best - don't be around when one goes off! johnnybach