Line Voltage/Mains Connections for GRX* and GRX-AU* Models (6-Zone Unit Shown)
Earth/ground from distribution panel
Distribution
panel
Hot/
Live
2 #12 AWG
N
Input power from
distribution panel
Neutral from distribution panel
Line Voltage/Mains Connections for GRX-CE Models* (6-Zone Unit Shown)
Load 2
2
2 2 .5 mm
Load 4
2
2 2 .5 mm
Load 6
2
2 2 .5 mm
* For phase-to-phase and delta-feed wiring, contact Lutron .
Step 5: Connect PELV (Class 2: USA) Cable to the
Control Unit — Optional
If your lighting system uses wallstations and/or multiple control units, PELV (Class 2: USA)
wiring is needed to supply power and carry communications between the control units and the
wallstations .
Important Wiring Information
• Lutron requires that you connect (daisy-chain) control units and wallstations with two twisted
pairs for operation . Each twisted pair in the PELV (Class 2: USA) wiring link should consist of
two #18 AWG (1 .0 mm
• Use properly certified PELV (Class 2: USA) cable . For a description of recommended cable
types, refer to "PELV (Class 2: USA) Cables" on page 3 .
• Install in accordance with all local and national electrical codes .
• Wallstation circuits are classified as Class 2 (USA) and PELV (IEC) circuits . Unless otherwise
specified, the voltages do not exceed 24 V
with the requirements of NFPA 70
comply with the requirements of IEC 60364-4-41, VDE 0100 Part 410, BS7671:1992, and other
equivalent standards . External circuits connected to input, output, RS232, Ethernet, DMX512,
and other communication terminals or wallstations, must be supplied from a Listed Class 2
source or comply with the requirements for PELV circuits as applicable in your country .
• The control unit's low-voltage PELV (Class 2: USA) circuit is 12 V .
• The PELV (Class 2: USA) cable and terminal block should be separated from the line voltage/
mains cables by at least 1/4 in . (7 mm) .
GRAFIK Eye
®
Load 2
2 #12 AWG
Load 4
2 #12 AWG
Load 6
2 #12 AWG
Coopersburg, PA 18036 USA
GRX-3106-CE
ZONE: 40 - 800 W/VA
SSA
2
) stranded conductors .
, National Electrical Code
®
3000 Series Control Unit Installer's Guide
ZONE 2
CU WIRE ONLY
ZONE 4
ZONE 6
Class 2
USA
1 2 3 4
CLASS 2
HOT/LIVE
IEC
PELV
SSA
Earth/ground from distribution panel
:
N
10 A 2300 W/VA
L
or 15 V . As Class 2 circuits, they comply
ZONE 1
ZONE 3
ZONE 5
NEUTRAL
Load 1
2
2 2 .5 mm
Load 3
2
2 2 .5 mm
Load 5
2
2 2 .5 mm
Neutral from
distribution panel
Input power from
distribution panel
(NEC
) . As PELV circuits, they
®
®
Load 1
2 #12 AWG
Load 3
2 #12 AWG
Load 5
2 #12 AWG
Distribution panel
Hot/
2
2 2 .5 mm
Live
N
R