Sorry Bob, I'm listening, but you not saying anything, your just griping. Please state why it is misleading.
Normally, when comparisons such as this are done, the criteria being used is more in line with each other. Comparing a lighting system of, 192 watts to a system of 440 watts is misleading.
The comparison was posted so people can see the difference in lumens v watts that each particular type of light produces.
Possibly, except for the fact that these wattage figures are way out of line. It appears that all the examples are severely underdriven, except for the MH, wihich is overdriven. Without knowing what ballasts were used, it's impossible to extract any useful information from the chart.
Also in what way is it incomplete? What wrong assumptions could be made?
Three values are missing for the MH system.
The replacement cost for the PC system is zero. This gives the impression that they last forever. The cost should have been prorated. Someone with little or no lighting experience, could make wrong assumptions.
That watt for watt, PC is more intense than VHO or NO, well no that wouldn't be a wrong assumption, that would be correct, it is more intense. What else, that watt for watt, MH is way more intense than any of them? Well not that is right also. That was the point of the comparison,
And this is my point, these wattage values are bogus. You admitted yourself that the information was "slanted".
there was a paragraph explaining resevations with the particular comparison, I do not believe pc is more tha twice as intense as VHO, but from some figures done with some friends, a 67K PC bulb produces 1.6X as may lumens per watt as NO or VHO, which are compareable watt for watt.
In reality, VHO is somewhat less efficient than NO.
Oh and to answer how it can use less electricity, it's simple, the figures on the bulbs are approximations
No they are not. These are the manufacturers specifications. They are not approximations.
and when they did the tests, those were the actual watts consumed.
If the power consumption figures are what they actually measured, this indicates, as I said before, that the lamps are being severely underdriven. If so, it's because of improper ballasting and should not be used for comparison.
If you can show where it is wrong, I will be happy to remove it, I do not wish to mislead anyone in this hobby, but I would like to see some fact first, not just what is quoted above.....
Just the fact that the power consumed is so much less than the actual bulb wattage indicates that something is very wrong with this chart.
Any reason your posts are particularly grumpy today? Anything we can help with?
I'm sorry if I seemed "grumpy". Beleive me, this was not my intention at all. Again, I apologize.