Kichler 12217 Manual Del Usario página 3

INSTALLATION INSTRUCTIONS
8) Determine the gauge of Low Voltage Landscape Lighting Cable and the Transformer Voltage Tap to use in order to
avoid excessive voltage drop, which leads to dimming or non-functioning lights at the end of the wire.
For optimum light output, the voltage at the lamp socket should range between 10.8 to 12 volts for incandescent
fixtures. LED fixtures should be between 10 to 14 volts.
(Calculate separately for each wire run from the transformer):
A) Add up all the individual bulb wattages.
B) Measure the total length of the wire run.
C) Use one of the following fixture placement multipliers:
• If > 60% of the fixtures are in the first half of a cable run = .75
• If the fixtures are spaced evenly along the run = 1
• If > 60% of the fixtures are in the last half of a cable run = 1.25
• If 100% of the fixtures are on the last half of a cable run = 2
D) Select the wire gauge Cable Constant value (Thicker wire is better as it drops less voltage)
E) To help boost the voltage, to compensate for the voltage drop on longer runs, this transformer comes with
both a 12V and 15V tap. Select the combination of wire gauge and transformer Voltage TAP that will give you a voltage
as close to 12V as possible.
(Load (W) x Distance (Ft.)) x (Fixture Placement Multiplier) / Cable Constant = Voltage drop.
Transformer TAP voltage - Voltage Drop = as close to 12V as possible.
EXAMPLE: (5) 6W LED fixtures, to be installed on an 80 ft. wire, where all of the fixtures are on the last half of the wire.
(5) x 6W x 80ft. x 2 (Placement multiplier)/ 7500 (12 gauge Cable Constant) = .64 Volts dropped.
If the 12V tap were used 12 -.64 = 11.36 Volts.
OR
(5) x 6W x 80ft. x 2 (Placement multiplier)/ 2200 (16 gauge Cable Constant) = 2.18 Volts dropped.
If the 15V tap were used 15 – 2.18 = 12.82 Volts.
9) Split cable approximately 3", and strip 1/2" insulation off each wire.
10) On the bottom of the terminal block push one bare wire into the hole marked "COM" and tighten the corresponding
screw on terminal block face until wire is secure. (See chart below)
[Chart for terminal screw torque specification]
Wire Size
#12
#10
#8
11) Push remaining bare wire into the appropriate voltage TAP as marked on bottom of terminal block (as determined in
step 8E) and tighten screw to torque specifications in chart.
Wire Gauge
(smaller No. is thicker)
18
16
14
12
10
MAX Number
Tightening Torque
of Conductors
8 3.6 - 4.0 N-m [32-35 in-lbs]
4 3.6 - 4.0 N-m [32-35 in-lbs]
1 3.6 - 4.0 N-m [32-35 in-lbs]
Cable
Constant
1380
2200
3500
7500
11920
3