Installation

REV073019

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4.5.3 – AC System Bonding

Multiple AC Neutral-to-Ground Bonds

Verify that only one neutral-to-ground bond exists in the system. Having more than one neutral-

to-ground bond in a system violates local electrical codes, may create a shock or fire hazard, and

may cause some sensitive equipment to malfunction.

Failure to follow these instructions can result in death or serious injury and will void the

Warranty.

System bonding refers to connection (bonding) of one of the current-carrying conductors of an

electrical system to ground. This creates a "grounded conductor" or "neutral" that is at ground

potential, but is separate from the equipment ground conductor. System bonding must be done at

only one location. Procedures for system bonding vary between on-grid and off-grid systems.

System bonding for on-grid systems

The Conext XW Pro or XW+ does not connect the neutral to ground. The AC input neutral is

already bonded to ground by the incoming utility grid system. Do not connect the neutral to

ground in any additional location.

The Conext XW Pro or XW+ does not switch or disconnect the AC neutral in any mode of

operation, so even in invert (back-up) mode, the inverter load sub-panel neutral is bonded to

ground by the utility grid system. It must not be grounded again in the inverter load sub-panel.

System bonding for off-grid systems

In a system without a generator, or with a generator that does not provide a grounded neutral,

you must make the connection from neutral to ground in the inverter load sub-panel or main

distribution panel, as applicable.

In a system with a generator that provides a grounded neutral, no additional connection from

neutral to ground is needed. Do not connect neutral to ground in the inverter load sub-panel or

main distribution panel, as applicable.

For more information regarding installations with a generator, please refer to Schneider Electric’s

manual for the AGS.

4.5.4 – Making DC Connections

This section only applies to AccESS systems equipped with the optional Conext MPPT 80 600

Solar Charge Controller. Refer to the Conext MPPT 80 600 Owner’s Guide for further information

regarding functionality programming of the charge controller.

Note: Before connecting PV, verify the cable polarity and mark the cable accordingly as Positive

or Negative.

The SimpliPhi AccESS is equipped with multiple knock outs.

• Bring the PV wiring from the PV disconnect into the AccESS enclosure through the

appropriate knock out for PV IN.

• Strip 0.5” of insulation from the Positive PV Conductor(s). (1.27 cm).

• Insert the stripped conductor end into the terminal of the MPPT.

• Repeat for the Negative PV Conductor(s)