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| Power Supply |
Optimal coverage and energy, when used on planting beds, requires the use of bars mounted side by side and end to end. With each bar 6.35cm
wide and 53.34cm long, this layout puts bars on 7.62cm centers with ends touching. The bars have a DC power connector on each end that allows power
to flow through the bar for connection to another bar. The limit on this "chaining" is 4 bars in a series. There are a wide variety of power supplies
available for use in chaining. For simple setups, you can just swap out the wall plug supplies for a single large supply without any additional cost.
For larger setups, Light Earth Design can provide large supplies that will power many strings of 4 bars easily. Most of these power supplies will work
on both 120vac and 240vac. When operated on 240vac, the cost of operation drops about 40% over the same setup running on 120vac. Our best value
unit is 960 watts, which is about 100 LGM550 bars. It's light weight and electronic. Power supplies are available in either shelf mount or DIN mount. Keep
in mind that when powering bars for commercial use, it is recommended that a maximum of 4 bars be used per power drop. The use of automotive or
high-voltage cable type 00 is recommended also. We do not supply this cable because it is always less expensive for the grower to purchase it locally
from an electrical supply house. The "Aluminum Multi Conductor Parallel & Tee Tap Connectors" pictured below are recommended for tapping into the
buss cables. (positive or negative).
Commercial growers "should" use 3-phase power. The commercial power supplies we feature are 92% efficient, compared to only 80% for
single-phase type units. Efficiency relates to how much energy is lost during the convert from AC to DC, something which most commercial growers are
sensitive to. Ideally, one should run our products on photovoltaic or wind power, as our products are the only plant growing option for operating off the
grid. More options are available if you would like to run "off the grid" using solar/battery setups. For larger commercial setups requiring 1000 or more bars
you have the option of special bar to bar cables as well as engineering drawings needed to show bar mounting and power drops.
| The Power Supply |
| Click on the Link Below for 2011 Online Product Catalogue LED Grow Lights by Light Earth Design |