Performance Comparison Chart


 

 

Comparison Item 400 Watt
Metal Halide
Great Lakes T-8
Fluorescent
1000 Watt
Metal Halide
Great Lakes T-5
Fluorescent
Watts
Consumed
465 221 1165 354
Annual
Electricity Cost Per Fixture
(Assuming 24/7 operation
at .055 cents per kilowatt)
$224 $106 $561 $171
Rated
Life of Lamp
(Assuming 12 hours of operation between
each start)
20,000 30,000 24,000 30,000
Replacement
Lamp Costs
(Great Lakes fixtures use six lamps)
$30 $21 $65 $51
Recycling
Lamp Costs
$16 $2 $20 $3
Color
Rendering
(Percentage of light as compared to
“natural” light)
65% 85% 65% 85%
Lumen
Maintenance of Lamp
(Percent of output maintained
over rated life of lamp)
60% 93% 60% 93%
Increased
Light Levels
(Measured in foot-candles)
x Up
to 50%
x Up
to 15%
Fixture
Weight
30lbs. 12lbs. 40lbs. 12lbs.
BTU’s
Of Fixture
(Average heat produced by fixture)
1,587 764 1,786 1,238
Restart
Time
(Time required for fixture to turn back on)
10
min.
Instant 10
min.
Instant
Special
Features
(Ability to add Motion Sensors, Emergency
Ballasts, etc�)
NO YES NO YES
Warranty 5 yr
6 mth
Ballast
Lamp
5yr
3yr
Ballast
Lamp
5yr
6 mth
Ballast
Lamp
5yr
3yr
Ballast
Lamp
Information obtained through research and testing.
Our field test will provide the most accurate comparison.
Improving Your Bottomline and Work
Environment