10kw shower

[GaryMo]

I get 39.93A for a 240v rated 10kW shower connected to a measured 230v supply.

10000 / 240 = 41.67amps (I=P/V)

240 / 41.67 = 5.76ohms (R=V/I)

230 / 5.76 = 39.93amps (I=V/R)

 

[JonoPashley]

Rounded Ohms up too far damn it.

 

[TicklyT]

Where did he ask for resistance?

He wanted to know the current drawn.

If the shower is rated for 10kW at 240v and he wants to know the current draw at 230v, how would you work that out without first working out the resistance of the element?

You don't need to know the value of the resistance, just that the resistance is constant. The current at 230 Volts is just 230/240ths (=0.9583333...) of the current at 240 Volts

 

[GaryMo]

So it is!

 

[ban-all-sheds]

What's wrong with all of you?

After a page and a half of explaining how lengthening a cable increases its resistance, including posts using the term "ohms", this guy wrote

right, so it's asking me- if i extend a length of cable, the copper bit in the cable(the circuit conductor,yes??) what will the resistance to (heat im assuming) be?

Here he said he thought that different installation methods would alter a conductor's colour.

And now this.

It's blindingly obvious that he's one of those pathetic twonks who has come here to see how stupid he can pretend to be and still get "help", either for his own amusement or because he thinks he's on some kind of mission to expose us.

Stop playing his game.

any advice?

Plenty, but the mods won't let me give it.

 

[leeco]

spot on bas

 

[leeco]

spot on bas

 

[securespark]

You can say that again!

 

[ban-all-sheds]

that