"Andy Evans" wrote in message
...
don't hit the 500VDC supply with a spanner while hanging onto the metal
rack
with the other hand.

Too right. start experimenting on 300v HT lines. Not that they can't do
you in,
but you can survive.

=== Andy Evans ===
Visit our Website:- http://www.artsandmedia.com
Audio, music and health pages and interesting links.

You should also respect large heater DC caps also
To quote from Morgan Jones, p236

"A 10 00µF is capable of delivering a very high current into a low
resistance., and wedding ring across the capacitor will discharge it
perfectly. The explosive arc that will be struck at the instant of
discharge will cause the ring to vaporize, resulting in flying molten
metal. Do *not* wear jewellery when working on low voltages"

But, don't let us put you off. Just beware and be careful.
Enjoy!

Iain