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MODEL 600 SERIES OPERATOR | Rev. 2019.7.1
RECOMMENDED WIRE SIZES
Voltage drop becomes important when the length of a run of wire or cable becomes very long. Usually this is not a problem
in circuits within a house, but may become an issue when running wire to your gate’s control box.
Excessive voltage drop can cause loss of efficiency in operation of your gate system. It not only can even result in
shortening the life of your electronic equipment.
To avoid excessive voltage drop, select wire size that will minimize voltage drop, you will need to know the length of the
wire run and the amp load or current that will be on the circuit. To determine amps, add up the wattage of all electrical
devices that will be on the circuit and divide the total by the voltage of the circuit (either 110 volts or 220 volts).
110 VOLT, SINGLE PHASE, MAXIMUM 3% VOLTAGE DROP*
Length of Run
25’
50’
100’
150’
200’
Amp
Load
Copper 14 gauge 12 gauge 8 gauge
6 gauge
6 gauge
15 AMP
Copper 12 gauge 10 gauge 8 gauge
6 gauge
4 gauge
20 AMP
220 VOLT, SINGLE PHASE, MAXIMUM 3% VOLTAGE DROP*
Length of Run
25’
50’
100’
150’
200’
Amp
Load
Copper 14 gauge 14 gauge 12 gauge 10 gauge 8 gauge
15 AMP
Copper 12 gauge 12 gauge 10 gauge 8 gauge
8 gauge
20 AMP
NOTE: These wire sizes are only general recommendations. Federal, state and local codes ALWAYS take
precedence. Consult the National Electrical Code or local authority having jurisdiction if you have
wiring concerns.
*The tables above apply to the single phase systems, in steel conduit, at a conductor operating temperature
of 167°F (75°C). It assumes a power factor of one. The table may be used for systems using non-steel
conduit, but actual results for these conditions may result in a greater voltage drop.
WARNING!
Installation of electrical wire can be hazardous, if done improperly and can result in personal injury or property
damage. For safe wiring practices, consult the National Electrical Code and your local building inspector.