www.etsolar.com
13
Module Preparation
The preparation steps described in this section apply to a large majority of the modules you will
install. Occasionally, however, situations will dictate that the cables be routed differently. Or,
your individual experiences will determine steps or cable management techniques that work
better for you or, more importantly, for your inspectors.
Before you begin preparing the modules for installation, consider the following items, which
might require changes to the cable management of one or more modules:
•
Where is the junction or transition box located in relation to the module that will connect
to it?
Whether the box is located to the left or right of the array (as viewed from the ground
facing the installed array) determines which transition cable you need (male or female)
and what preparation is needed for the final module in the string. With the junction or
transition box to the left, a female transition cable is required. The final module in the
string will require an end cap be plugged into the mid-cable junction. With the junction
or transition box to the right of the array, a male transition cable is needed. The final
module will require additional cable management to secure the end of the AC cable.
Before connecting the transition cable, calculate the distance from the transition box to
the module plus the distance under the module to reach the appropriate AC connector.
This will determine the length of transition cable that you will need.
How will you manage the transition cable? If the transition box is under the module, you
might be able to use the module's cable clips to secure the transition cable to the module
frame.
NOTE: Always place cable clips at least three inches from a plug or mid-cable junction to
ensure proper stress relief.
•
Do you need any extension cables? Will the extension cable reach from connector to
connector or is it necessary to modify the standard cable management of one or both
modules to make the connection easier?
How will you manage the extension cables? If the extension cables will connect two rows
of modules in the same string, use cable clips to secure the transition cable to the
module frame. Including waves or loops in the cable between clips can help manage
slack.
If the extension cable is running across open roof, another cable management system
will be needed to keep the extension cable off of the roof and protected from the sun. If
the distance to be crossed is longer than the length of the extension cable, you must
transition back to standard building wiring systems to span the distance. Use a transition
Summary of Contents for ET-P660250AC
Page 1: ...AC Module Installation Guide Content for ET P660250AC...
Page 12: ...Table 1 Mod 10 dule Layout D Diagram w www etsolar c com...
Page 22: ...Jun nction B Box Top p Left 20 w www etsolar c com...
Page 23: ...Tw wo String gs Two rows ea 21 ach w www etsolar c com...
Page 24: ...Tw wo String gs Sing gle Rows 22 w www etsolar c com...
Page 25: ...Lan ndscape e Two S Strings 23 w www etsolar c com...
