INSTALLATION DIAGRAM
Ballast/transformer
compartment cover
Do not open when performing
original installation. This
compartment only needs to be
opened to replace the ballast.
Fixture mounting
location
Junction Box Cover
Fixture head
Ballast/transformer compartment
Seal all conduit entries with
suitable compound (e.g.
Hydrel PC-21 re-enterable
potting compound) to prevent
moisture penetration from the
supply conduit system.
Junction Box
Use a suitable thread sealing compound when connecting conduit
Supply conduit
Knuckle Stem Set
Screws (2)
Knuckle Stem
Bolt
1. Be sure power is turned off.
2. Attach fixture to Junction box cover plate
3. Attach conduit to the box using a suitable thread sealant. Be sure to seal the conduit with a suitable compound to
prevent moisture penetration (see notes on drawing).
4. Pull wires from conduit through hole in bottom of box.
5. *Make electrical connections to the fixture. Attach supply LINE wire to the appropriate wire labeled LINE from
the Ballast/Transformer box. Connect the neutral wire from the supply to the white wire in the Ballast/Transformer
box. Be sure that the ground wire is attached to an approved grounding source.
6. Attach the fixture and Junction box cover plate to the Ballast box using the screws provided.
7. Loosen bolt in knuckle and knuckle stem set screws to aim fixture. When aimed properly, retighten the knuckle
bolt and set screws.
8. Unscrew lens cover. Install lamp (by others) in socket. Replace lens cover.
NOTE: Use only manufacture recommended lamps
4600 KM
KNUCKLE MOUNT
INSTALLATION INSTRUCTIONS
Installation should be performed by a qualified
electrician in accordance with the National Electrical Code
and relevant local codes.
*IMPORTANT:
Junction Box/Ballast Box must be water tight.
Seal all conduit entries with suitable compound
(e.g. Hydrel PC-21 re-enterable potting compound)
to prevent moisture penetration from the supply
conduit system.
NOTE: HYDREL RESERVES THE RIGHT TO MODIFY SPECIFICATION
WITHOUT NOTICE. Any dimension on this sheet is to be assumed as a
reference dimension: “Used for information purposes only. It does not
govern manufacturing or inspection requirements.” (ANSI Y14.5-1973)
©2014 Acuity Brands Lighting, Inc.
6/19/14
INS-4600_KM
9144 Deering Avenue | Chatsworth, CA 91311
Phone: 866.533.9901 | Fax: 866.533.5291
www.hydrel.com