Testing For a Neutral

[mad fridgie]

Hi

I was wondering if anyone could explain "how to test for a neutral" in a way that a first year apprentice would understand. My boss says it is really simple when you know how, but it is really difficult to explain.

Any help would be appreciated.

Your Boss is right!
I like to explain electrics to newbys by using your sink at home.
Here goes
Object to wash a plate (moter, contactor, relay etc)
You turn on your tap (live, the tap is the switch)
The water rushes over the plate (power use)
The water falls down the drain (neutral)
If you notice the sink overflow (Earth) and the drain are connect under neath the sink (so it can be said that the earth and neutral at some point are the same)
If you put the plug in the drain (broken neutral) flow of water will stop (the sink fills) Imagine the sink now is a fully sealed. The sink will be at the same pressure as the tap (Voltage, or we should say potential difference) If sealed sinks leaks it goes dowm the overflow (earth fault).
Easier to say than write!!!!!!!

[Clk320_Greg]

Your Boss is right!
I like to explain electrics to newbys by using your sink at home.
Here goes
Object to wash a plate (moter, contactor, relay etc)
You turn on your tap (live, the tap is the switch)
The water rushes over the plate (power use)
The water falls down the drain (neutral)
If you notice the sink overflow (Earth) and the drain are connect under neath the sink (so it can be said that the earth and neutral at some point are the same)
If you put the plug in the drain (broken neutral) flow of water will stop (the sink fills) Imagine the sink now is a fully sealed. The sink will be at the same pressure as the tap (Voltage, or we should say potential difference) If sealed sinks leaks it goes dowm the overflow (earth fault).
Easier to say than write!!!!!!!

LOL, i like it!!!