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EcoSystem
Step : EcoSystem Bus Wiring
EcoSystem Bus wiring may be considered NEC
or PELV (Class 2: USA).
• NEC
Class 1: Low voltage EcoSystem Bus wiring may
®
be run in the same conduit as mains voltage wiring to
fixtures.
• PELV (Class 2: USA): Low voltage EcoSystem Bus wiring
must be separated from all mains and NEC
wiring.
Consult applicable national and local codes for
compliance.
Lutron recommends using two different colors for
E1 and E2 (EcoSystem Bus) wires. This will prevent
wiring mistakes in junction boxes where several different
EcoSystem Bus wires combine. Use the following
instructions for wiring the EcoSystem Bus.
DO NOT WIRE LIVE! Interrupt power via circuit
breaker before wiring and servicing the EcoSystem
Bus Supply. V
power is off.
A. Use the wire size chart that follows to determine which
wire size to use based on the length of the EcoSystem
Bus.
B. Wire the EcoSystem Bus from terminal E1 and terminal E2
to all ballasts and modules.
C. Separate low-voltage wiring from the mains wiring.
If wiring the EcoSystem Bus as PELV (Class 2: USA),
maintain proper separation from mains and NEC
wiring.
D. Turn on circuit breaker to energize. V
lights green when energized.
E. EcoSystem Bus Supply outputs 17 V
(maximum) between E1 and E2. Use a voltage meter
to confirm this voltage between E1 and E2 terminals.
Confirm that there is no voltage from E1 to earth/ground
or from E2 to earth/ground. Otherwise, a wiring fault is
present, which must be cleared before continuing.
Lutron |
| Bus Supply Installation Guide
TM
Class 1
®
Class 1
®
PWR indicator will be off when
Class 1
®
PWR indicator
+/- 1 V
Line Voltage Wiring Area
To first bus
ballasts and
Low Voltage Wiring Area
modules
NEC
EcoSystem Bus Wiring to EcoSystem Bus Supply
Note separate areas for different voltage wiring
Note: If 17 V
E2, check EcoSystem Bus wiring. A short between E1 and
E2 will cause the EcoSystem Bus supply to stop providing
voltage on the bus and will cause the corresponding ERR
indicator to flash. Removing the short between E1 and
E2 will automatically allow the EcoSystem Bus Supply to
operate properly.
Wiring Size and Bus Length
EcoSystem Bus wires E1 and E2 are not polarity sensitive.
EcoSystem Bus length is limited by the wire gauge used
for E1 and E2 as follows:
Wire Gauge
#12 AWG (4.0 mm
#14 AWG (2.5 mm
#16 AWG (1.5 mm
#18 AWG (1.0 mm
LUTRON
®
Class 1 and PELV (Class 2: USA)
®
+/- 1 V
is not present between E1 and
Maximum EcoSystem
Bus Length
)
2200 ft (671 m)
2
)
1400 ft (427 m)
2
)
900 ft (275 m)
2
)
570 ft (175 m)
2
EcoSystem
Bus Supply Installation Guide
TM
To second bus
ballasts and
modules
(2L version only)
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