Maximal Expandable Power Systems
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NEC Power-Limited Wiring Requirements for
Maximal33E, Maximal35E, and Maximal55E:
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 differ-
ent 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) .
Note: Refer to wire handling drawing below for the proper way to install the CM or FPL jacketed wire (Fig. 5a).
External
Jacketed
Shield
Incorrect Wire
Handling
Correct Wire
Handling
Pull back
external jacketed
shield approx. 1/2”.
Wire
Insulation
Solid Copper
Conductors
Fig. 5
Fig. 5a
Supervisory
Connections
(power-limited)
Input
115VAC 60Hz
(non power-limited)
Optional Battery
Enclosure
(non power-limited)
DC
Output
Wiring
(power-
limited)
Battery
Connections
(non power-limited)
