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This assumption is not the way to go, for when we are at home in the evening watching TV, running the air conditioner, turning lights on in the house, etc., the actual voltage coming from the highest quality transformers might not be what the transformer terminal states. Their design of the wiring plan ASSUMES a voltage output from the transformer.(You would be shocked at how many designers skip this critical step) They do not design the system and wiring of the fixtures and count for voltage drop considerations.Two very common mistakes that inexperienced installers make are: If a system is installed with improper voltage drop considerations, the fixtures may still operate but this lack of power will significantly reduce the fixture and or lamp’s life expectancy. Low voltage light fixtures require a minimum amount of voltage to operate efficiently. ![]() (Last fixture on the wire run) (End of wire run) Eventually, the water will cease to flow to the end holes unless you increase the diameter of the hose (wire) or shorten the length of the hose. (Last fixture on the wire run) When you turn the water on (electricity), you can expect the highest pressure (voltage) of water from the holes closest to the water supply (Transformer) and the least amount of water from the last holes of the hose. Think about voltage the same as a garden hose (low voltage wire) with holes (Light fixtures) drilled every several inches and capped off at the end. More times than not, as I check amperage and voltage, I determine that their original system was not installed with voltage drop in mind. Several of our customers either have lighting systems that have lived their lifespan, or they would like to upgrade to additional higher quality fixtures. ![]() I do not intend on diving into all the technical and mathematical details on voltage drop, but I do think it is worth addressing.
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