Yeah, not the biggest sparks (pun intended) when it comes to electrics, you should see some of the stuff they come out re: part p when that comes up, and another guy tried arguing with me, telling me that because 2.5mm² is rated at 27A* that ring mains are fused with 25A breakers, one guy told another that running a submain to a shed is easy but he should make sure he uses an RCB (so either means an RCD, MCB or RCBO, narrows it down a bit...)
One guy added those cold cathode computer lights to the footwells in a mates car by taking an unfused feed from the battery, when they got broken, he took them out and taped over the ends... few months later there was a small fire in the car...
Oh, and to 'protect' youself when working on your car wiring, you should connect youself to the house earth, apparently.
though there are a few people on there who do know what they are talking about, I like to consider myself as one of them, though I did rub up another 'knowledgeable guy' the wong way once for suggesting that RCD's nuisense trip, and if its once, just reset the bugger, I wouldn't like to have to have everything PIRed everytime the RCD tripped...
*in free air to any newbies reading this