Power Supply
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Mounting the Power Supply
Power Supply Options
Fig. 5- Clockwise from top left- 40Watt Remote P/S (TR3A), 20Watt Class2 P/S (LP 1020-12), 40Watt Class2 P/S (LP 1040-12), and 60Watt Class2 P/S (LP 1060-12-GG-290)
Mount the power supply directly to the wall with #8 or #10 pan head screws. The power supply must be mounted in a wall ventilated area that allows for accessibility after installation and must not be adjacent to combustible materials or in an area that exceeds temperatures of 50°C (122°F). Mount the power supply indoors, out of the weather, and do not leave it exposed to rain or water. For outdoor or wet locations, the power supply can be enclosed inside of a raceway, inside the channel letter itself, in a UL listed for wet locations transformer box, or in a NEMA 3R box with ventilation. Some acceptable boxes for power supplies being mounted outdoors are Hoffman p/n A12R126, Westrim TC 18SO-UL or equivalent. A Class 2 power supply can also be used for outdoor or wet locations.
Connecting the Primary
After securely mounting the power supply, have the primary connected by a licensed electrician in accordance with local and national codes. For the 40Watt Remote Power Supply simply plug the AC power cord into a standard 3 prong grounded outlet.
Connecting the Output
LED power supplies have Class2 DC outputs. For reliability and performance, the following loading is not to be exceeded.
| Power Supply Part Number | Outputs | Input Voltage (Volts-AC) | Output Power (Watts) | Output Voltage (Volts-DC) | Maximum Output Current (Amps) |
|---|---|---|---|---|---|
| TR3A | 1 | 100-240 | 40 | 12 | 3.3 |
| LP1020-12 | 1 | 90-264 | 20 | 12 | 1.6 |
| LP1040-12 | 1 | 90-264 | 40 | 12 | 3.3 |
| LP1060-12 | 1 | 90-264 | 60 | 12 | 5 |
It is recommended that the current be checked on each power supply output after loading is complete. The current drawn by each leg should not exceed the current rating on the power supply label. If the measured current does exceed the rated current, reduce the nuber of LED modules on that leg until the current is below the rated output. The total number of modules per power supply is not to exceed the schedule as shown in Table 1. NOTE: If any power supply ouput leads are left unused, the unterminated wires must be individually capped inside a UL Listed junction box, raceway, or sign housing.