Demand Factor 'v' Diversity Factor - which is your preferred method

[GT1]

Haha. You wouldn't want to be pulling that amount of load every day
You'd need another mortgage...!

 

[just add water sparks]

By way of contrast, I did the same thing when I bought my current clamp meter and got up to 65A without adding the dishwasher and clothes washing machine, which I recon could add about 10A each if heating. So 85A max.

We have gas CH, gas hob and no electric shower. From memory, loads included: 1x fan heater, 4x PCs, TVs, HiFi, double oven, tumble dryer, toaster, microwave, iron, shower pump, immersion heater, all lights, all the kids electric gadgets, etc. Anything I could find was plugged in. Ordinary 4 bed house, but I was trying quite hard.

The average load is about 18kWh per day, which is only 3.2A.

is my maths bad ???? should it not be 7.8 amps????

 

[Welchyboy]

I know I am a bit late commenting but for information only.

1/. I would not put 30x58W Twin Fluorescents on one circuit. The maximum circuit protection for lighting would normally be 16 Amp or 10 Amps.

2./ Therefore the normal lighting connected load for a 16 Amp circuit would be around 8 Amps, for a 10 Amp circuit the connected load would be 5 to 6 .

The lighting was split over 5x 10a type C mcb's

I was aiming at calculating a figure for the maximum demand as a whole not for one lighting circuit.

 

[HandySparks]

is my maths bad ???? should it not be 7.8 amps????

It's your maths (I think).

18kWh per day, average.
Divide by 24h: = 18/24 kWh per hour = 0.75kW
Divide by nominal supply voltage: = 0.75kW/230V = 3.2A average.

 

[Guitarist]

I know that I have mentioned this before, but the instructor on my 17th ed course was talking to a power network design guy not long ago, and he said that when they work out demand for new housing estates they allow 12A per house as an average.