Copyright © 2011, PHONO SOLAR
Page 17 of 29
Cable lengths exceeding 150’ are not recommended.
To avoid difficulty, keep conductor runs from your AC Modules to the service entry as short
as possible. Long cable runs from the AC Modules may cause AC Modules to “see” higher
voltage than is actually present, leading to occasional shutdown of one or more units in the
circuit due to a perceived (but not real) abnormal utility voltage condition. Cable lengths
longer than 150‟ are not recommended. It‟s advisable to keep your total cable length less
than 100‟ if possible.
Cable should be secured to each AC Module frame with two or more cable clips
The BLACK insulated conductor
in the cable is the “LINE” connection. The WHITE insulated
conductor is “Neutral”. The GREEN insulated conductor is protective earth ground. The
neutral conductor must be bonded to earth ground at your service entry. See Figure-4.
Secure the Home Run cable from the last AC Module. Your local building codes may require
that this cable be in conduit. Though the cable supplied is UL-rated for outdoor use without
conduit, your local codes may override any instructions in this Manual.
Penetrating your roof or wall with this cable will likely require a metal conduit to meet your
local electrical codes. It is the installer‟s responsibility to ensure all national and local codes
are observed in the installation of this system.
Do not allow the Home Run cable to rest loosely on the roof. Use cable clips to secure the
cable across the backs of the AC Module frames. Additional hardware (not supplied) may be
necessary for additional cable as required by your local building codes.
FIGURE 4:
Basic AC Module Wiring Diagram
