back to basics higher the volts lower the amps?

[Risteard]

lightning is an example of a static discharge and that can certainly kill.

Lightning?

According to BS7671 that is an "Overvoltage of Atmospheric Origin".

 

[pushrod]

Lightning?

According to BS7671 that is an "Overvoltage of Atmospheric Origin".

Are we getting into semantics? Are you saying that lightning is not an example of a discharge?
There is of course there is a voltage associated with it.

BS7671 might be the bible of electricians, but i don't think it is held in such high reverie by physicists.

 

[Risteard]

No. Was just saying that the IEE have a much fancier term for lightning!

 

[pushrod]

No. Was just saying that the IEE have a much fancier term for lightning!

Yes they do

-"did you see that thunder and over voltage of atmospheric origin storm last night , it rained feline and canine small mammals afterwards"

 

[JUD]

Yes they do

-"did you see that thunder and over voltage of atmospheric origin storm last night , it rained feline and canine small mammals afterwards"

Shouldn't that be "precipitated"

 

[pushrod]

Shouldn't that be "precipitated"

It certainly should have been

 

[blackiel]

Voltage is the water pressure...Amps are the water bubbles...More pressure..more bubbles

 

[Scud]

Voltage is the water pressure...Amps are the water bubbles...More pressure..more bubbles

Not quite. Using the water analogy, which is one I use to explain electrical terminology to those with no electrical background, voltage would indeed be the pressure pushing water through a pipe, but the diameter of the pipes, or a turbine introduced into the system would equate to resistance, which would affect the rate of flow of water, the rate of flow being the current (Amps).

 

[lister]

So now they have lowered the domestic voltage down to 230 in some areas, this equates to more amps used, so my meter turns quicker and my electric bill gets bigger!

 

[Sintra]

No you use less amps.

I=V/R

Resistance will remain constant so for an appliance with a resistance of 18 ohms

240/18 = 13.33A

230/18 = 12.77A

 

[andyb]

No you use less amps.

I=V/R

Resistance will remain constant so for an appliance with a resistance of 18 ohms

240/18 = 13.33A

230/18 = 12.77A

That's correct,

Now if from that you work out the power you get 3.199 Kw at 240v @ 2.937 Kw @ 230v.

 

[blackiel]

Granted...With respect....Long time since ive had to Really think....Thats why im on here...

 

[blackiel]

Why is lightening always quoted in the amount of Volts...and not the...??? current finally discharged

 

[GStueyXR]

Why is lightening always quoted in the amount of Volts...and not the...??? current finally discharged

It's hard to get a clamp meter around it

 

[Crosswire]

it's hard to get a clamp meter around it :d

Hee hee

 

[Scud]

So now they have lowered the domestic voltage down to 230 in some areas, this equates to more amps used, so my meter turns quicker and my electric bill gets bigger!

No it doesn't. Your electric meter doesn't measure amps, it measures kilowatt hours. If you use a one kilowatt heater for one hour, you use one kilowatt hour. Current and voltage are irrelevant to that. Additionally, while the standard is 230V +10%, -6%, (since 1995), you will find that your voltage still sits around 240V.

 

[pushrod]

No it doesn't. Your electric meter doesn't measure amps, it measures kilowatt hours. If you use a one kilowatt heater for one hour, you use one kilowatt hour. Current and voltage are irrelevant to that. Additionally, while the standard is 230V +10%, -6%, (since 1995), you will find that your voltage still sits around 240V.

Somebody needs to rewrite the equation P = I x V then . Power (the rate of energy dissipation) is a combination of current and voltage. Energy use, as you correctly say is, a combination of power and time.

 

[JUD]

No it doesn't. Your electric meter doesn't measure amps, it measures kilowatt hours. If you use a one kilowatt heater for one hour, you use one kilowatt hour. Current and voltage are irrelevant to that. Additionally, while the standard is 230V +10%, -6%, (since 1995), you will find that your voltage still sits around 240V.

How do you work that out? Current and Voltage are used to calculate Watts

Power (Watts) = Current x Voltage

*EDIT* pushrod pipped me at the post

 

[GStueyXR]

Why do so many sparks seem to struggle to grasp even the most basic of concepts....

Worrying TBF

 

[blackiel]

It's hard to get a clamp meter around it

Ha Ha Ha...never thought of that...dont they make big ones then??