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Transformers, Dimmers, Multi Terminal Blocks

1.Please specify the different features of your transformers.

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2. What is the warranty of the transformers?

• Our product warranty (as with most of our products) is 2 years.

3. Are LCF transformers UL listed?

• There are two types of UL listings: Component listed and UL listed. Components are identified by the backwards "UR" symbol. That means the transformer is part of a factory-installed fixture. We offer these as replacement units. The standard "UL" listing designates transformer that are designed to be used with listed fixtures (such as a transformer supplying several recessed fixtures).
  
  Our SRT and Boxed electronic transformers carry the standard UL listing. Electronic transformers supplied without a junction box are component listed.

4. What is a Class II transformer?

• A Class II transformer is inherently limited to not more than 60 watts. It is a low energy low voltage device and considered intrinsically safe. Secondary wiring from a Class II transformer does not require conduit and clamp wiring techniques in accordance with Section 3 of the NEC.

5. Why are some of the SRT-series transformers dual voltage (12V and 24V)?

• The 24V mode allows installation in longer runs, such as around the perimeter of a room (especially when used with our Linear Track System). When setting the voltage at 24V, be sure to employ 24V lamps.

6. How long is the cord and plug that comes with the EN-33PS plug-in transformer?

• 7 feet.

7. What colors do the transformers come in?

• The EN-33PS is available in black and white. All other ones do not come with a choice of color because they will be hidden after installation.

8. Please provide specifications for the electronic transformers.

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9. The chart above refers to minimum load. What does that mean?

• The electronic transformers require a minimum load to operate. You need to stay within the specified minimum and maximum range for the transformer to operate properly.
  
  How do I check the output voltage of your electronic transformers? As our transformers operate at high frequency, the voltage cannot be read with most meters. A true RMS meter with 20KHZ capability is needed.

10.Please provide specifications for the SRT Series magnetic transformers.

• Mircea Table

11. What percentage load can the transformers take?

• You may load the transformer to its maximum capacity. For example, the EN-12P-AR unit is rated for 60W you may utilize it to its maximum capacity of 60W. The same applies to all the other units.

12. In the model numbers of your EN series transformers, what does the "AR" signify?

a. The "AR" means auto re-set. There are three main features: a. Short Circuit Protection: In the event of an electrical short, the transformer will stop functioning. After the shorted condition is removed and power is re-applied, the transformer will continue normal operation with no adverse effect to its life span.

b. Circuit Overload Protection: The transformer will cease functioning in the event of a circuit overload condition. It will re-set once the condition is corrected.

c. Extended life span: Turning on a light switch applies a sudden surge to bulbs and transformers, shortening the life of both. The AR transformer has a "soft on" feature that applies the voltage gradually. When you flick the switch, you will notice a two-second delay until the lights reach full brightness.

13.I am concerned with a voltage drop in my application. Do you have any guidelines on the subject?

• To minimize a voltage drop and lessened light output, the transformer should be located as close to the fixture as possible. A drop of 5% or less is generally acceptable. The chart below is a guideline to keep the drop below 5%.

14. Why do the fixtures flicker on and off from time to time when being dimmed?

• Check the distance of the last fixture from the transformer. Refer to the chart above for guidelines. The further the distance between the fixture and the transformer, the greater the voltage drop. This is one potential cause.
  
  Another possibility is that you are using a transformer that is too large. For example, you may have a total load of 60W (the equivalent of three Button Lights), and you are using a 100W transformer (EN-12PE-AR). Each transformer has a minimum load. In this case, the minimum load of the EN-12PE-AR is 60W. When the fixtures are dimmed the minimum load is not met, chances are the lights will flicker. To remedy this situation, you may change the transformer to a 75W unit (EN-12PL-AR). The key is to select a transformer that is equal to the total of the wattage, or one that is the next step up.

15. Why does the transformer/dimmer hum?

• All dimmers create electrical interference and noise from the lamp, transformer or the dimmer itself. Whether the noise is objectionable depends on what you are dimming, how quiet the room is, how much sound the furniture and surfaces absorb, and how sensitive the customer is.
  
  It is good practice to advise customers of this issue in advance. Noise is very subjective, once a customer feels an installation is unsatisfactory, it is difficult to change the perception.

16. In a low voltage situation (12V) like a motor home or a boat, would I require a transformer for my fixtures?

• Most RV's and boats operate under 12V. Transformers are not necessary.

17. What type of dimmers are the DM2 or DM3? Do they just dim, or click on and off as well?

• They are regular line voltage incandescent dimmers. They click on and off as well.

18. What is the difference between the DM2 and DM3 dimmers?

• They have the same specifications. The only difference is that the DM2 has a 1/4" shaft, whereas the DM3 has a 3/4" shaft for thicker surfaces.

19. Are the dimmer knobs available in different colors?

• Yes - your choice of black, white or polished brass knobs.

20. How many fixtures can a DM2 or DM3 control?

• It is rated up to 300W. If they are 50W fixtures, it will take up to 6 units.

21. What does a multi terminal block (MTB-01) do?

• It simplifies the wiring of multiple low voltage fixtures to a transformer. Instead of having a blob of wires to a wire¬nut, it can be made much neater and allows better connections with an MTB-01. The MTB-01 can accommodate up to 6 fixtures only. The output (12V) wires connect to the input terminal of the MTB-01, marked "A". Meanwhile, the wires from the 6 fixtures connect to the 6 output terminals of the MTB-01, marked "B" through "G". Refer to installation instructions for wiring details.

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