Myers Emergency Power Systems, LLC
44 S. Commerce Way
Bethlehem PA 18017
610-868-
3500 ǀ www.MyersEPS.com
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Model RLY-SW Wiring Diagrams
Wiring Diagram 1 (Suggested)
A common switch controls both normal and emergency lighting in a space. Upon loss of normal power, the emergency lighting comes on regardless of
switch position.
A dedicated switch controls emergency lighting in a space. Upon loss of normal power, the emergency lighting comes on regardless of switch position.
Frequently Asked Questions
Do I need a separate normal and emergency
ballast/driver?
NO,
the emergency light only needs a single ballast/driver. The Normal-Only light(s) shown are separate light fixtures
that you want to control with the same switch, but which do not serve as emergency lighting during a power interruption.
Can I use the RLY-SW-2 with 3-way switches?
YES
, replace the single pole wall switch above with your 3-way switches.
Can I use the RLY-SW-2 with A/B switching?
YES
, but you need a separate RLY-DIM-2D for each switch leg (i.e. two RLY-DIM-2Ds for A/B switching). If you are
using a special step-dim ballast/driver please consult Myers Emergency Power Systems for compatibility information.
Can I use the RLY-SW-2 with dimmers?
NO,
use model RLY-DIM-2D for 0-10V dimmers and RLY-DIM-D for line voltage dimmers.
Wiring Diagram 2 (Shunt)
