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© 2020 Columbia Lighting, a division of Hubbell Lighting, Inc. Specifications subject to change without notice. 

701 Millennium Blvd • Greenville, SC 29607 / Tel 864.678.1000 / Website www.columbialighting.com

Page 

1/2 

Rev. 

04/03/20

COL-CBT-ins

CBT Instruction Manual

 CBT

BACK-LIT TROFFER

NOTE: Components shown in images are 
representative only and may vary based 
on the configuration ordered. 

CAUTION

 

Read instructions carefully and turn electricity off at main circuit breaker panel before beginning installation.

WARNING

 

If any special control devices are used with this luminaire, follow the instructions carefully to assure full compliance with NEC requirements. If there are any 

questions, contact a qualified electrical contractor.

WARNING

This product contains chemicals known to the State of California to cause cancer, birth defects and/or other reproductive harm. Thoroughly wash hands after 

installing, handling, cleaning, or otherwise touching this product.

STEP 3

Raise unit into ceiling.

STEP 1

Open access plate. Use knockouts to connect power using 

appropriately-sized electrical fittings.

STEP 5

Bend T-bar clips into position.

STEP 4

Make wiring connections.

INSTALLATION METHOD 1: RECESSED MOUNTING

ACCESS PLATE

BLACK SUPPLY

WHITE SUPPLY

BARE, OR GREEN

GROUND WIRE

FROM SUPPLY

WIRE

WIRE

PLAIN OR BLACK

FIXTURE WIRE

FIXTURE GROUND

BARE, OR GREEN

WIRE

FIXTURE WIRE

WIRE NUTS

UL LISTED

WHITE OR IDENTIFIED

Purple

+

+

-

-

Grey

0-10V Dimmer Wiring

STEP 2

Set lumen output to desired level using lumen selector switch on gear tray. 

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