Hi all,
I realise that most of our members are from the US but I'm hoping that the power usage and costs make sense. I'm hoping someone can help me work out how much my lED lights are costing me...
Got a question about my LED lights and the power consumption.
The label says the unit uses 72wt ( per hr ).
The light unit has 72 LED bulbs.
The light is totally off for 8hr per day ( night ) so that leaves 16hr ‘on’
I have the whites on ( along with all the other bulbs..so 72 bulbs ) for 9hr a day ( at a max of 35%..but I don't know if this is relevant )( lets assume if the bulb is on its running at 100% power )
The other bulbs are on for 7hr a day.. ( total of 36 bulbs )
If every bulb was on for 24hr a day I assume the calculation is 72wt x 24hr =1.728kw x 34.037p ( my standard tarif ) = 59p per day
============================================================================================================================
SO….
For 9hr a day all the lights are on so that is 72wt x 9h = 648wt….x 34p per kwt = 22p
For 8hr a day only 50% of the lights are on ( if the whole unit uses 72wt per hr then it uses 36wt per hr for this period ) ?
36wt x 8hr = 288wt per day…x 34p per kwt = 10p ??
are my figures correct ??
Thanks in advance.
I realise that most of our members are from the US but I'm hoping that the power usage and costs make sense. I'm hoping someone can help me work out how much my lED lights are costing me...
Got a question about my LED lights and the power consumption.
The label says the unit uses 72wt ( per hr ).
The light unit has 72 LED bulbs.
The light is totally off for 8hr per day ( night ) so that leaves 16hr ‘on’
I have the whites on ( along with all the other bulbs..so 72 bulbs ) for 9hr a day ( at a max of 35%..but I don't know if this is relevant )( lets assume if the bulb is on its running at 100% power )
The other bulbs are on for 7hr a day.. ( total of 36 bulbs )
If every bulb was on for 24hr a day I assume the calculation is 72wt x 24hr =1.728kw x 34.037p ( my standard tarif ) = 59p per day
============================================================================================================================
SO….
For 9hr a day all the lights are on so that is 72wt x 9h = 648wt….x 34p per kwt = 22p
For 8hr a day only 50% of the lights are on ( if the whole unit uses 72wt per hr then it uses 36wt per hr for this period ) ?
36wt x 8hr = 288wt per day…x 34p per kwt = 10p ??
are my figures correct ??
Thanks in advance.