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SAFETY
Read this First
Follow the instructions in this manual. These instructions are key to the installation and maintenance of the Enphase AC
Combiner Box™.
To ensure the safe installation and operation of the AC Combiner Box, note the following safety symbols that appear
throughout this document to indicate dangerous conditions and important safety instructions.
DANGER:
WARNING:
NOTE:
Safety Instructions
DANGER: Risk
of
electrocution!
DANGER: Risk
of electric
shock. Risk of
fire.
DANGER: Risk
of electric
shock.
5
This indicates a hazardous situation, which if not avoided, will result in death or serious
injury.
This indicates a situation where failure to follow instructions may be a safety hazard or
cause equipment malfunction. Use extreme caution and follow instructions carefully.
This indicates information that is very important for optimal system operation. Follow
instructions closely.
Do not install current transformers (CTs) when current is flowing in the sensed circuit.
Always install CT wires in the terminal blocks before energizing the sensed circuit.
Do not attempt to repair the Envoy-S; it contains no user-serviceable parts. Tampering with
or opening the Envoy-S will void the warranty. If the Envoy-S fails, contact Enphase
Customer Support for assistance (enphase.com/en-us/support/contact). Refer servicing to
qualified personnel.
Only use electrical system components approved for wet locations.
Ensure that all wiring is correct and that none of the wires are pinched or damaged.
Do not wire unused terminals or terminal blocks on the Envoy-S.
Before making any connections verify that the circuit breakers are in the off position. Check
all wiring before applying power.
Do not use Enphase equipment in a manner not specified by the manufacturer. Doing so
may cause death or injury to persons, or damage to equipment.
Be aware that installation of this equipment includes risk of electric shock. Do not install
the AC Combiner Box without first removing AC power from the Enphase System.
Disconnect the power coming from the photovoltaics before servicing or installing.
Only qualified personnel should troubleshoot, install, or replace the AC Combiner Box or the
Envoy-S.
Improper servicing of the combiner box or its components may result in a risk of shock, fire
or explosion. To reduce these risks, disconnect all wiring before attempting any
maintenance or cleaning.
Always de-energize the AC branch circuit before servicing. Never disconnect the DC
connectors under load.
Do not work alone. Someone should be in the range of your voice or close enough to come
to your aid when you work with or near electrical equipment. Remove rings, bracelets,
necklaces, watches etc. when working with this equipment.
© 2016 Enphase Energy Inc.
AC Combiner Box Installation
141-00030 Rev 02
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