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| Frequently Asked Electronic Transformer Questions by W•A•C |
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| ELECTRONIC TRANSFORMERS – FREQUENTLY ASKED QUESTIONS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1. Please describe the features of your transformers.
2. What is the warranty of the transformers? Our transformer warranty is 2 years. 3. Are WAC transformers U.L. listed? Yes. There are two types of U.L. listings, component listed and standard listed. Components are identified by the backwards “UR” symbol. This means the transformer is part of a factory-installed fixture or to be used as a replacement. Remote transformers require the “UL” listing and are supplied in an approved enclosure. 4. What is a Class II transformer? A Class II transformer is limited to not more than 60 watts. It is a low energy device and is considered “inherently limited and intrinsically safe” an integral fuse isolates primary and secondary circuits. Secondary wiring from a Class II transformer does not require conduit and clamp wiring techniques in accordance with Section 3 of the NEC. The HR-88 button lights and miniature recessed cabinet lights require this transformer. 5. 150 watts is not a lot of capacity, what if I need more? Just use multiple transformers; there is not much cost differential between using multiple small wattage units and one larger unit. Multiple transformers can be wired to the same switch and will operate together (see diagram at the end of the section). 6. How long is the cord and plug that comes with the EN-1260-P-AR plug-in transformer? Can it be detached? 6 feet. Yes the cord can be detached to so the wire can negotiate smaller openings. The transformer has a built in on/off rocker switch. 7. Please provide specifications for the electronic transformers.
8. 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. 9. 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. What percentage load can the transformers take? You may load the transformer to its maximum capacity. For example, the EN-1260-RB-AR unit is rated for 60W you may utilize it to its maximum capacity of 60W. The same applies to all the other units. 11. In the model numbers of your EN series transformers, what does the “AR” signify? The “AR” means auto reset. There are three main features:
12. 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%.
13. Why do my fixtures flicker? 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 and not meeting the minimum load requirement. Finally a loose connection may also cause flickering. 14. Why does a transformer/dimmer hum? All dimmers create noise from the lamp, transformer or the dimmer itself. A loud buzz is a signal that the dimmer and transformer are not compatible. A mild low volume hum is normal. 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. 15. 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. 16. 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. 17. Transformer Wiring Diagram
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