This overview of BS 5839, for domestic property may explain.
As Westie says, there are grades A to F
Which deal with the actual engineering of the alarm. Ie. The constituent parts and how it's put together.
And then the Category definition, ie. The risk involved and the areas to be...
Can't see much call for ev in Devon. In most areas, the battery would flat before you got back from popping out for a loaf.
Bit more affluent in Bath. I bet some of those ev's struggle to climb some of those hills though.
It depends what sort of bike you are dealing with. New with can bus and electronics etc. Or old with magnetos and points.
I think Persig did mention an oil change.
The fact you have created a void behind the CU with access for any heat and gases through the rear entry and into the void is, in effect, a chimney, with the possibility of, if gets hot enough, melting or setting fire to the top bit of trunking and therefore improving the chimney effect.
As...
So in effect, you form a chimney in a plastic flammable material, (I'm assuming plastic as I've never seen sticky back metal trunking), with an opening from the CU into the chimney? Bit like cladding a tower block??
I don't think that ventilator ducting is going to connect up with a plug stuck in that socket. It needs moving up the wall above the bend where it won't be visible when the ducting is fitted.
Yes MI cable. Not sure about the termination through the back of the box though. Would like to see the other side of that. No flat edges on coupling. Dodgy earth connection on to fixing screw because the box is fitted too close to earth terminal on right hand side...
Mounting on wooden patress was how it used to be done with surface wiring. Like one of these. Don't know if they do one big enough for your fitting.
http://www.periodpattresses.com/epages/es108574.mobile/?ObjectPath=/Shops/es108574_es120039009115
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