If my cellar were to flood?

[sparkyspike]

Depends on your supply. Some supplies will have a cutout at high level (such as pole transformers).

 

[Steve]

You seem to be saying the RCD will trip but forgetting about the supply itself, what about the incoming supply? thats at the same level ast the Cu & enters the CU just the same, I know the outgoing from the CU may stop.

Whats likely to happen with the supply? is it going to stay on & start shorting out through the water & cause problems with the incoming cable? at the substation etc

230 VOLTS IS 230 VOLTS whether its in the supply cable or in your house.

The fact remains, water will normally not do any major damage to the electrical equipment, and normally wont activate any overload devices.

So yes, it will probably stay on, unless you have a wussy DNO and they turn off the supply manually at the substation.

Every streetlight has a cutout in it, just like your house mains supply (the first thing on the incoming cable). When these are submerged (lighting columns aren't waterproof) the lights stay on.

 

[RF Lighting]

A mate of mine works in a small commercial premisis. He says if the area floods, their TP&N cutout becomes fully submerged underwater.

It nas never stopped working while he has worked there.

I've seen outside lights full of water and still on and working too.

 

[breezer]

I've seen outside lights full of water and still on and working too.

do you mean flood lights?

 

[securespark]

Hur-de-hur!

 

[mattylad]

OK, so if it floods I cetainly wont be going down there until its been drained then

Not even while wearing my waterproof biohazard suit.