Originally Posted by Garry s
Van - opening sentence: 100% accurate, 100% unhelpful, 50% funny
OK, 60% funny
As for the rest of it, I understand that but wonder why the water doesn't short out all the bits of leccy what are coming out of the wires ...but then again I was conditioned by my grandma..'steam irons, mixing electricity and water....it's madness'
The wires have an insulating varnish on them. If the wires were bare and touching each other the motors wouldn't work because the wires would short out. Tthe 'lectricity stays in the wire vs jumping across the varnish because it's easier to flow through the wire. Dunking them in water results in no difference with the insulation...they're still insulated from each other by the varnish coating.
FWIW, water is actually a great insulator. It's the contaminants in the water that creates conductivity. Of course, the higher the voltage the more likelyhood of exposed wire ends being able to 'arc' to each other vs flowing through the wire itself. We run at pretty low voltage, relatively speaking, so it's even less likely any exposed wiring would short out unless they were about touching.
Okay, let's try a little analogy. Take 3ft of rubber tubing. The tube material itself is the 'insulator' and the ID of the tubing is the 'conductor'. Blow thru one end of the tubing and all the air comes out the other end because..why? Because it's easier to flow through the tubing than penetrate the walls of the insulator..so 'what goes in one side comes out the other'. Works good in air, right? Now take that rubber tubing and immerse it in water...keeping the open ends out of the water. Now blow thru one end. Does the air come out the other side or does it all bubble up from the water? It comes out the end because the tubing in 'insulating' the air from the water. The same thing happens with the motor wire windings. The current 'flow' goes thru the wire because the insulation on the wire keeps it there..be it in or out of water. In essence, the wires in the motor are in a closed loop. What goes in one end has to come out the other.