Possible ceiling light snag.

[bernardgreen]

If I placed an ammeter in series (connect as you would) would see the same value on live as you would doing the same check on neutral?

It helps to think of electricity in wires as water in pipes, if there are no leaks the volume of water going in at one end is the same as comes out at the other end. That is current.

The pressure of the water will be different if the water is moving. That is voltage difference ( potential difference ).

The thinner the pipe the less water flows. That is resistance.

The higher the pressure ( voltage ) diffence the more water ( current ) flows.

 

[securespark]

Kirchoffs first law says that....

Sod's law states that if you walk into a situation like this blind, it is the last light fitting you drop at which you find the fault.

 

[ban-all-sheds]

It's always the last light fitting/socket/switch, nothing to do with Sod's Law.

 

[bernardgreen]

Of course it its the last one you look at. Why look at any more fittings after you have found the fault.

 

[ban-all-sheds]

Exactly.

 

[Iggifer]

So the RCD trips before you do.

Love it