Tetra
®
PowerStrip Snap DS
Installation Guide
6
When retrofitting a sign, ensure the
rail is cut to the appropriate length to
properly seat in the lamp socket, and
use Tetra® Snap Socket Endcaps to
secure rails to existing lamp sockets.
NOTE: When utilized, ensure the rail
is properly seated in the lamp sockets.
For horizontal installations greater than
5 ft. in length, the rail assembly should
be centrally supported.
Tetra Snap
Socket Endcap
Lamp
socket
#8 screw
Nominal T12
Tube Length
Nominal Rail
Cut Length
1.5 ft.
15” (381.5mm)
2 ft.
21” (533.1mm)
2.5 ft.
20” (686.1mm)
3 ft.
33” (837.9mm)
3.5 ft.
39” (980.8mm)
4 ft.
45” (1142.7mm)
5 ft.
57” (1447.5mm)
5.33 ft.
61” (1549.5mm)
6 ft.
69” (1752.3mm)
7 ft.
81” (2057.1mm)
8 ft.
93” (2361.9mm)
Tetra
®
Snap Nominal LFL
Rail Length Requirements
1. (Existing Signs Only) Prior to installation, survey the site for information regarding power and accessibility inside
and outside the building. Ensure that the branch circuit supplying the existing transformer or ballast will be within
the voltage ratings of the new LED power supply, and have a current rating not exceeding 20A, or that permitted by
applicable local, state, or country electrical codes (whichever is less).
2. (Existing Signs Only) Remove the existing lighting equipment to be replaced, such as neon tubing or fluorescent
tubes; and associated transformers and ballasts. Care should be taken not to break the existing neon or fluorescent
tubes. NOTE: Follow all federal and local regulations when disposing of neon tubing, fluorescent tubes, transformers
and ballasts.
3. (Existing Signs Only) If removal of the existing lighting equipment eliminates the disconnect switch, as required by
applicable local, state, or country electrical codes; a new disconnect switch must be installed.
4. (Existing Signs Only) Repair and seal any unused openings in the electrical enclosure. Openings greater than
12.7-mm (1/2-in) diameter require a metal patch secured by screws or rivets and caulked with non-hardening caulk.
Smaller openings may be sealed with non-hardening caulk.
5. Using the layout guidelines above, determine required number of LED modules required to illuminate the sign.
6. A Tetra
®
24VDC Class 2 Power Supply, as listed below, must be used with this retrofit kit. Using the Maximum Loading
chart below, determine the number of Tetra
®
Class 2 Power Supplies required to power the number of LED modules
required to illuminate the sign, so as not to overload the Tetra
®
Class 2 Power Supply chosen.
7. Follow the instructions above to properly mount the LED modules.
8. Connect the DC output of the power supply to the LED modules using the Electrical Connections instructions below.
9. Connect the power unit to the supply in accordance with the applicable local, state, and country electrical codes, and
the instructions found in the power supply installation guide.
10. If required, the disconnect switch shall be installed by qualified personnel, in accordance with applicable local, state, and
country electrical codes.
Retrofit Instructions
FOR UL ONLY
Using Tetra
®
Snap Socket Endcap
