LiftMaster EL1SS EL1SS Installation and Programming Manual - Page 13

Earth Ground Rod, Power Wiring, Power Wire Table

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INTRODUCTION INSTALLATION TESTING PROGRAMMING EARTH GROUND ROD To AVOID damaging gas, power or other underground utility lines, contact underground utility locating companies BEFORE digging. NOTE: Keep ground wire as straight as possible. Ground wire 12 AWG minimum 12 feet maximum Connect the green ground wire to the grounding rod. Run the wire from unit to suitable earth ground. NOTE: Shield connections on boards should not be connected to ground wire. IMPORTANT: An earth ground rod is strongly recommended and should be no further than 12 feet from the unit and use a minimum of 12 gauge wire in most cases. The type and length of earth ground rods vary by region. Contact the building inspector's office in the municipality where you plan to install the unit for correct grounding materials and installation procedures. Check national and local codes for proper depth Earth ground rod Other ground sources within 12 feet of access control panel Ground to metallic cold water pipe Ground to existing electrical system Electrical panel POWER WIRING The 110 Vac outlet must be dedicated to the unit only. This outlet should be wired back to its own 10 Amp minimum circuit breaker. This will prevent two problems: • Other equipment cannot introduce spikes, noise, surges, or dips into the power circuit. • The system's operation will not be affected if any other equipment develops a short circuit across the power line. Connect the transformer into a 110 Vac outlet after all connections have been made, any other type of outlet will cause damage to the system. POWER WIRE TABLE DISTANCE Under 30 feet 30 - 75 feet 75 - 150 feet 150 - 250 feet 250 - 500 feet AC POWER WIRE SIZE 18 AWG 18 AWG 18 AWG 16 AWG 12 AWG NOTE: LiftMaster is not responsible for conflicts between the information listed in the above table and the requirements of local building codes. The information is for suggested use only. Check local building codes before installation. 11 Dedicated 10 Amp Minimum Circuit Breaker 12 Vac Power (included) The EL1SS MUST be grounded. Dedicated Outlet

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INTRODUCTION
PROGRAMMING
TESTING
INSTALLATION
11
Connect the green ground wire to the grounding rod.
Run the wire from unit to suitable earth ground.
NOTE:
Shield connections on boards should not be
connected to ground wire.
IMPORTANT: An earth ground rod is strongly recommended
and should be no further than 12 feet from the unit and
use a minimum of 12 gauge wire in most cases. The type
and length of earth ground rods vary by region. Contact the
building inspector’s office in the municipality where you
plan to install the unit for correct grounding materials and
installation procedures.
To AVOID damaging gas, power or other underground utility
lines, contact underground utility locating companies BEFORE
digging.
EARTH GROUND ROD
The EL1SS
MUST be
grounded.
12 Vac
Power (included)
Dedicated Outlet
Dedicated 10 Amp Minimum Circuit Breaker
NOTE:
LiftMaster is not responsible for conflicts between the
information listed in the above table and the requirements of local
building codes. The information is for suggested use only. Check local
building codes before installation.
POWER WIRING
The 110 Vac outlet must be dedicated to the unit only. This outlet
should be wired back to its own 10 Amp minimum circuit
breaker. This will prevent two problems:
• Other equipment cannot introduce spikes, noise, surges, or
dips into the power circuit.
• The system’s operation will not be affected if any other
equipment develops a short circuit across the power line.
Connect the transformer into a 110 Vac outlet after all
connections have been made, any other type of outlet will cause
damage to the system.
POWER WIRE TABLE
DISTANCE
AC POWER WIRE SIZE
Under 30 feet
18 AWG
30 - 75 feet
18 AWG
75 - 150 feet
18 AWG
150 - 250 feet
16 AWG
250 - 500 feet
12 AWG
Ground wire
12 AWG minimum
Earth ground rod
Other ground sources within
12 feet of access control panel
Ground to
existing
electrical
system
Electrical
panel
Ground to
metallic cold
water pipe
12 feet maximum
NOTE
: Keep ground wire as
straight as possible.
Check national
and local codes
for proper depth