Wiring Requirements for Standalone Stations
IMPORTANT: The AC terminals on the Express 280 accept a maximum wire size of 55 mm
2
(1/0
AWG) solid or stranded wires. If using a larger gauge wire to accommodate a long run, reduce
the wire size at the local external disconnect.
For full product specifications, refer to the Express 280 Datasheet. Using that data, ensure that the
installation location is equipped with service wiring that supports the station's power requirements:
l
Neutral conductor as required by region (a Neutral connection is not required for equipment
operation and the terminal is provided for convenience only)
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Shunt trip wiring: size 0.08 to 2.5 mm² (28 to 14 AWG), fine stranded or solid
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AC conductors (L1, L2, L3) and ground per the following specifications:
Voltage Rating Temperature Rating Maximum Conductor Size for Terminals
Phase conductors - 600 V 90°C 1/0 AWG
Ground conductor- 600 V 90°C 6 AWG
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AC lugs (x3):
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Silver plated copper compression lug (2-hole specified for North America); tin plated is
acceptable if used with dielectric grease
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Holes for an M6 (1/4 in) stud at 19 mm (3/4 in) stud hole spacing
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Maximum width 30 mm (1.18 in)
Additional Wiring Requirements for Paired Stations
IMPORTANT: The DC terminal blocks on the Express 280 can accept a maximum wire size of
120mm
2
(4/0 AWG) with 300 kcmil. Check site plans and local code for site-specific
requirements.
For stations that will be installed as Paired, follow all AC wiring requirements above as well as the following
additional wiring.
Note: Be sure to acquire, or alert the installer to acquire, lugs before visiting the site. Contact ChargePoint
in advance if you need help obtaining lugs.
Ethernet wiring for DC:
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Minimum of CAT5e or better
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Outdoor or plenum rated wiring
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Maximum run length of 100 m (328 ft)
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Leave 3.2 m (10.5 ft) of wire above grade at each end
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Field crimp using straight-through pattern 568B
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