CommScope Redwood version 2.1 - Manual (Page 7)

SSYSTEM INSTALLATION GUIDE
www.redwoodsystems.com 7
2 Power Requirements and Recommendations
2.1 Low-Voltage Cabling Requirements
An LED Gateway or Adapter connected to a fixture requires 1, 2, or 3 ports from the Engine to power the
fixture, depending on the power requirement specifications of the fixture. A port can be connected with
either standard category cabling, or with 18 AWG low-voltage wiring, comprised of stranded or solid
wire.
In the case of category cable, all four twisted pairs will be used to form one port connection to the
engine.
For 18 AWG wiring, the cable may be shielded or unshielded. For both cases, the wiring or cable must
be UL listed, such as types CL2 or CM, and suitably rated for its intended installation environment (e.g. –
P if the cabling is routed through plenums).
To minimize voltage loss in the cable, the following maximum run-lengths should be observed:
Low-voltage wire type Max Length (ft) Max Length (m)
Category Cable (5e, 6/6a) 328* 100*
18 AWG 328 100
* The 328ft/100M length can only be achieved when all four twisted pairs will be used to form one port
connection to the engine; otherwise the length is limited to 75ft/23 meters.
2.2 Redwood Engine Power Requirements
The Redwood Engine is available in two versions: a 277V AC power input version and a 120V - 250V
AC power input version.
A dedicated branch circuit for each Engine is recommended. However, you can have two 277V engines
on a single 20Amp circuit provided these are the only equipment on the circuit. This will ensure that no
other loads on the same circuit draw too much current from the branch circuit and thereby not allow the
Engine or Engines to operate continuously.