How many lights can you put on a 150 watt transformer?
A typical halogen lamp is going to need 20 watts of power. A 150 watt transformer can only support up to 150 watts of lamps. This means the most you could add onto this transformer would be 140 watts, or 7 halogen lamps. However, putting 140 watts of power onto a 150 watt transformer is really pushing it to its limits.
How far can you run 10 2 low voltage wire?
We recommend using 10/2 low voltage wire for all wire runs longer than 50 feet in halogen systems. The larger 10/2 wire will help reduce voltage drop.
How far can you run 12 2 low voltage wire?
Lighting Tip: You can run 12-gauge about 100 feet without voltage drop issues as long as the total wattage of the fixtures on the wire is 100 Watts or less. Also check that your wire and connectors are listed for direct burial which helps prevent corrosion and other weather-related problems over time.
When using an electronic transformer, the total wattage of the light fixtures connected to the transformer should be less than or equal to the maximum wattage rating. For most magnetic transformers, the total wattage of the lights you connect shouldn't be more than 80% of the maximum wattage rating.
After determining the wattage and the number of fixtures, you will need a certain length of wire to properly power your landscape lighting. 16-gauge wiring can go as far as 3,135 feet for one fixture at 15V. In comparison, 12-gauge wiring – which is thicker – can reach 10,688 feet for one fixture at 15V.
The transformer can't cause damage to the power outlet. The overload transformer's voltage would drop. The domestic plug's voltage would be low.
The Best Wattage For Landscape Lighting
The best wattage for outdoor lights is 40 watts and lower. Up to 40 watts is ideal for lighting pathways, garden beds, and other landscape areas. 40 to 80 watts are great for brightening areas like driveways, smaller yards, and the inside of your home.
Bury the wires 6 to 12 inches below the surface to ensure you will not disturb them when you are mowing or doing other yard work. Place the wires in the trench, backfill with the dirt you removed, and replace the sod, tamping it down with your foot to reseat it.
In this example of installing your landscape lights with specific wire gauges as another consideration for which transformer wattage to buy, we can benchmark some calculations knowing that typically, a 300-watt transformer can power 100 feet run using 16 gauge, or 150 feet using 14 gauge, or 200 feet when using the
Systems that don't have super-long wire runs (over 150 feet) can typically use 16 or 14 gauge wire. For longer runs, use lower gauge wire to prevent voltage drop. You will need about 100 feet of 12 gauge cable for every 100 watts.
They operate at about 90 to 95 percent efficiency and can run for a very long time, anywhere from 20 to 25 years.
Transformer size is determined by the kVA of the load. Load voltage, or secondary voltage, is the voltage needed to operate the load. Line voltage, or primary voltage, is the voltage from the source. Single-Phase has two lines of AC power.
Knowing you need 57.2 amps (I) and the output of 480 volts (E) Watt's law can be applied as P = I x E. Therefore, 57.2 x 480 = 27,456 watts, or 27.456 KVA. This would be the minimum size transformer required for this application.