Disconnection time

[Berlioz]

"f it is 10.5kw at 230 volts then it will be 240/230 x 10.5 = 10.95kw at 240v and 251/230 x 10.5 = 11.45kw at 251v"

Sorry to remind, but consumption of the Pwer is Constanta. If the Voltage is more (240V), Ampers are less. P=U*I (without coefficients).

One more time my request: "has smbd the link to BRB? I would like to have a look at it. Regards. Berlioz"

Berlioz

 

[Berlioz]

"There are no free links to the BRB its copyrighted"

That s cruel. Berlioz

 

[Zeespark]

Why is it cruel? Most other BS publications makes the cost of the BRB/BGB look like pocket money.

AndyGuinness

 

[Doc Hudson]

"f it is 10.5kw at 230 volts then it will be 240/230 x 10.5 = 10.95kw at 240v and 251/230 x 10.5 = 11.45kw at 251v"Sorry to remind, but consumption of the Pwer is Constanta. If the Voltage is more (240V), Ampers are less. P=U*I (without coefficients).

One more time my request: "has smbd the link to BRB? I would like to have a look at it. Regards. Berlioz"

Berlioz

somebody?

Hello Berlioz, welcome to the forum. Firstly, text speak is not needed on the forum, as we have plenty of room to write full words and it makes it clearer for others to read. Second. I think it is the load of the shower that is constant not the power consumption. As such if the voltage fluctuates the current & power also fluctuate. Because Power = V

 

[martinxxxxxx]

Doc

Is it acceptable to use abbreviations such as BRB or BGB or is this too SMSy too?

Showers do have on the packet (well mira ones that I likes to fit do) a wattage for the voltages for both 230 and 240 volts, from which you can check if the manufacturer is aware of ohms law derive the element's resistance.

If you are going to check that the CCC of a cable is adequate, surely the actual measured voltage is what is important and the actual resistance of the load rather than stated values of nominal voltages and power dissipation?

Then if the voltage fluctuates the current will normally be less than what you used to work out the for the purposes of deciding the cable size, for the reason stated above about the voltages in this country.

Martin

 

[Andy™]

DocIs it acceptable to use abbreviations such as BRB or BGB or is this too SMSy too?

there is a difference between abbreviations and text speak (i was going to say that in text speak, but it was taking too long, so typed the full thing)

 

[andy_spark]

DocIs it acceptable to use abbreviations such as BRB or BGB or is this too SMSy too?

Showers do have on the packet (well mira ones that I likes to fit do) a wattage for the voltages for both 230 and 240 volts, from which you can check if the manufacturer is aware of ohms law derive the element's resistance.

If you are going to check that the CCC of a cable is adequate, surely the actual measured voltage is what is important and the actual resistance of the load rather than stated values of nominal voltages and power dissipation?

Then if the voltage fluctuates the current will normally be less than what you used to work out the for the purposes of deciding the cable size, for the reason stated above about the voltages in this country.

Martin

Fully agree, cables shouldn't over heat in theory but they do in practice!!!

I would always calculate for the worst case scenario, at least you are covering yourself.