Over current vs volt drop.

[D Skelton]

Let's say for example you wire a 4 core 95mm cable straight in to a 200A supply, if you then run that cable out 20 miles and touch the live ends you aint gonna get a shock.

Didn't really think that one through did I *facepalm*. Like I said earlier, I woke up this morning groggy and hungover and hadn't really engaged brain before replying. I stand by the rest of what I say and regarding this part, I was purely trying to make a point about voltage drop and distance and made it rather badly it would seem.

Ok let's recalculate, run 1mm T+E for 125 miles, plug one end in to 230V and bridge the two conductors with ya face at t'other end. No shock!

Edit: Assuming bodily resistance of 2kohms

 

[Outspoken]

Where's the local means of isolation?

Ussain Bolt needs a Job after the Olympic you know...