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Handling Voltage Drops in Low Voltage Outdoor Lighting

by allisonshallenberger

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When you toss a ball, it flies at top rate before it loses its kinetic energy and slows down. Why a ball will not go through a container with either a weak shot or a shot that's just too away is due to the said fact. Energy loss takes place all the time in many things physics can clarify, even in electrical wiring—which is commonly called a "voltage drop."

Voltage drop is something to think about when establishing low voltage outdoor lighting; it takes place if there isn't enough voltage in particular locations of the circuit. In this case, electrical energy cannot get to parts of the circuit, specifically numerous landscape lamps. Common causes of voltage drop may include the cable being too long or the number of passive elements along the electrical power's course. Outdoor lighting is typically vulnerable to voltage drops.

You can obtain the value of voltage drop with a simple formula: multiply the total watts and length of the cable, and then divide it by the cable size constant. If you have 75 feet of #12 cable (constant is at 7490) with 120 watts, the voltage drop is at least 1.2. This suggests that the circuit can lose 1.2 volts the farther it travels.

Lighting manufacturers recommend hooking the run (or length of the cable) to the correct volt tap so that it won't lose energy as it travels farther. Since volt taps are found in a transformer device, this restates the value of having one for steady low voltage outdoor lighting. Without it, there will be less energy to go around the lamps across the garden.

There are ways on ways to stay clear of voltage drops in your system, according to specialists. One such technique is to maintain brief and long-run fixtures in the same team so that they do not share a single run, which may be unsuitable for each other. A short-distance fixture on a run 100 feet long may indicate a drastic voltage drop, leading to dim light. On the other hand, long-distance fixtures on a run just 15 feet long can lead to overvoltage, which can harm your lamps.

For more technical specifics about voltage drops in outdoor lighting, you can ask your landscape lighting provider. You can also visit internet sites of key outdoor lighting producers, or go to for more info.

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