For eg in electricity board energy bills?
We refer to it as Demand Factor. Its the total calculations of all lighting, dedicated appliance, general use power in the unit of Current (Amps). We have a NEC formula to calculate what is required when build a dwelling or commercial build. usally done by engineers on the E-sheet of blue prints, but any lic. electrical contractor, journeyman, etc. can make those calculations. I am not going to write a 10 page explanation of Demand Factor calculations. Its not one easy formula. You have to add percentage value for light loads, general use is 180 watts per outlet. Continus duty circuits need to be cal. at 125% demandetc. See there is alot more, When I was an apprenntice I did not learn this stuff until fourth year. EDIT: Well isn't that a *****! Thats why i never heard of that term. UK refers to metered service as maximum demand? USA its called Kilowatt hour usage
Sorry Sparky its not that type of maximum demand. Max demand on a UK electricity bill is determined as follows UK industrial tariffs are generally measured on a 1/2 hour basis that is the 24 hour day is split into 48 1/2 hour segments during the annual period of increased demand September to March the electricity company records your usage for each 1/2 hour segment in KWH the highest KWH in any 1/2 period between september and March is your maximum demand charge This will be a time when most or all of your electrical equipment is on together drawing the maximum power consumption. If you have an old analogue type meter it has a max demand needle that displays the up to date maximum demand figure if in the next 1/2 hour period you exceed this value the needle will be pushed up to this higher value and will not reset. The next high demand period if greater than previous will again push the needle up to a new maximum value. At the end of march or end of max demand period the highest 1/2 hour figure will be used in your bill.
