HI Folks

As part of a week-long Food Festival out here in South-west Ireland,
we're holding a family-fund-day-cum-open-air-market event.

As part of the 'craft' attractions, I'm hoping to be able to demonstrate
my stained-glass work.

If all goes to plan, my stall will be backed up against the wall of a
building with mains power, so I was hoping to sneak an extension lead in
through a window and get my mains that way.

As the building in question is Council-owned, there's a good chance that
there may be 'elfin-safety' discussions - so - to avoid being scuppered
by these - what's the consensus on how best to show that the temporaty
installation is safe ? Something simple like a plug-in RCD at the
'inside' end of the cable ??

Power requirements are tiny - 80W for a soldering iron and maybe 100W
for a small grinder.. Providing an earth at the outside end of the cable
might be a challenge as it's a tarmaced car park!

Thanks
Adrian