On Mon, 20 Nov 2017 22:53:59 +0000, newshound wrote:

I think these "caravan/boat" CFLs cope very well with low voltage

So do ordinary, nominally 230 V, CFLs. Confused the heck out of me
having been woken up in the wee small hours when the ice storm had
done it's thing and left our supply at around 120V. Things with lumps
of iron power supplies were off, things with SMPSU's were quite
happy, CFLs worked but were probably a bit dim, tungsten just emitted
a dull brown glow...

Once I'd sussed out the low supply voltage just operated all the main
switches to "off" and went back to bed.

--
Cheers
Dave.