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Published byLaila Seale Modified over 9 years ago
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LOW-VOLTAGE LIGHTING
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http://www.fxl.com/product/power- and-control/luxorhttp://www.fxl.com/product/power- and-control/luxor
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Lighting VOLT: the force that moves electricity –Like water pressure 240 volts for heavy equipment
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Lighting 120 volts for house voltage
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Lighting 12 volts is low voltage and safe
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Lighting CURRENT or AMPERAGE: the flow of electricity –Like water flow
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Lighting Ohms: measure of resistance –Like friction loss in irrigation Resistance reduces voltage
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CIRCUIT PANEL Each circuit 120 VoltsEach circuit 120 Volts Overload, current exceeds capacity and overheatsOverload, current exceeds capacity and overheats Circuit breaker prevents overloadCircuit breaker prevents overload
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CIRCUIT PANEL Circuit fuse prevents overload
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LIGHTING BULBS Incandescent Voltage through coiled filament Converts to 90% heat and 10% Filament evaporates tungsten (darkens bulb)
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LIGHTING BULBS Halogen Voltage through coiled filament Halogen gas in the bulb binds the tungsten to prevent darkening
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LIGHTING BULBS Halogen <10.5 V does not heat up enough –Color shift
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LIGHTING BULBS Fluorescent (CFL) Electricity travels through argon gas Require ballast to supply start-up current Contain mercury
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LIGHTING BULBS Solar Lights Utilize LED light Bluish light
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LIGHTING BULBS LED (Light emitting diode) No filament Doesn’t heat up significantly –Efficient Directional
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LIGHTING BULBS Incandescent 1,200 60 watts $325/annually CFL 8,000 12 to 15 watts $76/annually LED 50,000 hours 6 to 8 watts $32/annually LEDIncandescentCFL
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LIGHT FIXTURE
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TRANSFORMERS Converts 120 V to 12 V 12 V taps (or higher) Multiple taps
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TRANSFORMERS
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Wattage capacity –300W, 600W, 900W, or 1200W Timer and photocell
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TRANSFORMERS
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Wattage Requirements Add the wattage of all fixture connected 60% to 80% of transformer capacity
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Cable WIRE SIZE, or AWG (American Wire Gauge) The lower the number, the thicker the wire
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Cable Single circuit cable 12/2
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CABLE Splicing cable Quick connectionQuick connection
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Splicing cable Wire nuts (DBY)Wire nuts (DBY)
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Cable If wire is too small Higher amps Increased resistance Increased heat Fewer volts
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Reduce Voltage Drop Shorten cable Increase cable size
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Reduce Voltage Drop Center transformer Reduce number of lights Reduce bulb wattage
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Voltage Drop Cable length X Total watts X 2 = Voltage Drop Cable constant
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BASIC TYPES OF LANDSCAPE LIGHTING Path lighting
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BASIC TYPES OF LANDSCAPE LIGHTING Path lighting
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BASIC TYPES OF LANDSCAPE LIGHTING Up lightingUp lighting
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BASIC TYPES OF LANDSCAPE LIGHTING Up lightingUp lighting
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BASIC TYPES OF LANDSCAPE LIGHTING Up lightingUp lighting
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BASIC TYPES OF LANDSCAPE LIGHTING Down lighting (Moonlighting)Down lighting (Moonlighting)
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BASIC TYPES OF LANDSCAPE LIGHTING Down lighting (Moonlighting)Down lighting (Moonlighting)
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BASIC TYPES OF LANDSCAPE LIGHTING Down lighting (Moonlighting)Down lighting (Moonlighting)
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BASIC TYPES OF LANDSCAPE LIGHTING Silhouette lighting
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BASIC TYPES OF LANDSCAPE LIGHTING Grazing
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BASIC TYPES OF LANDSCAPE LIGHTING Grazing
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BASIC TYPES OF LANDSCAPE LIGHTING Spot lightingSpot lighting
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BASIC TYPES OF LANDSCAPE LIGHTING ShadowingShadowing
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BASIC TYPES OF LANDSCAPE LIGHTING ShadowingShadowing
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MR-16
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PAR
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Cost of Lighting Cost estimator http://www.citytrf.net/costs_calculat or.htmhttp://www.citytrf.net/costs_calculat or.htm Kilowatt-hour (kWh) –1000 watts used for an hour
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Cost of Lighting SCE&G –$0.115 kWh Pond pump (340 watts) 0.33 kWh in an hour 0.33 x 0.115 = $0.038 per hour 24 hours x 0.038 = $0.91 per day 30 days x 0.91 = $27.32
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Cost of Lighting Small pond pump 0.01 kWh in 2 hours 0.005 kWh per hour 0.005 x $0.115 = $0.00058 per hour X 24 hours = 0.014
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Landscape lights, 130W 0.13 kWh per hour X $0.115 = $0.015 X 4 hours a night = $0.06 X 30 days = $1.80 a month
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Christmas lights, 100 bulbs –(1 strand) 0.035 kHw per hour X 0.115 = $0.004 X 10 strands = $0.04 X 6 hours = $0.24 a night X 30 days = $7.20 a month
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12v, 10w halogen: 200 lumens 12v, 1w LED: 50 lumens
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Refrigerator, 1.37 kWh per 16.5 hours 0.083 kWh per hour $.0095 per hour $0.23 per day $6.87 per month
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Computer station at home 1.81 kWh / 15 hours
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