If Required, Install Drm Support And A Central - enphase Envoy-S Installation And Operation Manual

WARNING! To extend the CT leads, the electrician must use appropriately rated, 0.75
2
mm to 2.5 mm
codes.
The electrician may add as much as three ohms round trip resistance to the CT or up to 1.5 ohms per
wire. For reference, the following maximum lengths at 75° C by gauge are:
•
64 meters of 0.75 mm
•
85 meters of 1 mm
•
128 meters of 1.5 mm
•
213 meters of 2.5 mm
Resistance figures may not be appropriate for all geographies or installation conditions. A qualified
electrician must determine the wire gauge and type to obtain a maximum round trip resistance of
three ohms.
Select wire that is code type and rated for voltage and temperature for the specific application.
Mechanically protect the wires in a code type conduit or raceway. Use certified connectors for splices
and insulate splices from one another and from the raceway, conduit, or junction box, if metallic.
Buried wires must be certified for direct burial and follow the code for installation. Do not bury splices
unless in a certified junction box rated for the application and use a certified moisture resistant
connection method.

4. If Required, Install DRM Support and a Central

The multiphase IQ Gateway Metered supports DRM (Demand Response Management). If required for
your region, an electrician can install DRM support and add a central disconnect. The IQ Gateway
(ENV-S- WM-230) has a pre-installed 15kΩ resistor that provides DRED bypass when DRED is not
required.
NOTE: In systems where a central disconnect (contactor) is installed, you must use
Installer App to configure the meters as described in Step 8 before device discovery can
complete.
To configure DRM support use the terminals shown:
16
2
, twisted pair wire and install it in accordance with all applicable electrical
2
7-strand Cu = 1.5 ohms
2
7-strand Cu = 1.5 ohms
2
7-strand Cu = 1.5 ohms
2
7-strand Cu = 1.5 ohms
© 2022 Enphase Energy Inc.
IQ Gateway Metered Installation and Operation
DRM
port label
DRM Port
DRED bypass
15 Nov, 2022