Installation Guide

- 8 - Maximal Expandable Power Systems
NEC Power-Limited Wiring Requirements:
Power-limited and non power-limited circuit wiring must remain separated in the cabinet. All power-limited circuit wiring
must remain at least 0.25” away from any non power-limited circuit wiring. Furthermore, all power-limited circuit wiring
and non power-limited circuit wiring must enter and exit the cabinet through different conduits. One such example of this
is shown below. Your specific application may require different conduit knockouts to be used. Any conduit knockouts may
be used. For power-limited applications use of conduit is optional. All field wiring connections must be made employing
suitable gauge CM or FPL jacketed wire (or equivalent substitute).
Optional UL Listed battery enclosure must be mounted adjacent to the power supply via Class 1 wiring methods.
For Canadian installations use shielded wiring for all connections.
Note: Refer to wire handling drawing below for the proper way to install the CM or FPL jacketed wire (Fig, 3a).
Fig. 3
External
Jacketed
Shield
Incorrect Wire
Handling
Correct Wire
Handling
Pull back
external jacketed
shield approx. 1/2”.
Wire
Insulation
Solid Copper
Conductors
Fig. 3a
120VAC Input
60Hz
(non power-limited)
Battery Connections
(non power-limited).
Number of batteries may vary
depending on your optional hookup)
Supervisory, Fire Alarm Interface
and Aux. output Connections
(power-limited)
DC Output
Wiring
to Sub
Assemblies*
*Power-limited for Maximal11FE.
Maximal13FE has one power-limited board
(eFlow4NB) and one non power-limited (eFlow6NB).
Non power-limited for Maximal33FE, Maximal35FE,
Maximal37FE, Maximal55FE, Maximal75FE,
Maximal77FE
Optional
UL Listed
Battery
Enclosure
(non power-
limited)