Hi guys, big smile to everyone who reads this :)
Ok so basically i have a friend who has a 400w ballast and 400w bulb along with 1 TT100 4" fan @ 220-240 Vac 50/60Hz UK & European Mains AC Voltage.
33 Watts.
His electricity charges him 13.30 pence per kwh
He leaves fan and light on for 24...