P/N OX73718
Revision A - June 2005
For Additional Help with this product,
please contact our Technical Services
Department at (800)959-6004.
Z-MAX Manual Addendum for
Z-MAX cabinets with Integral Overcurrent Protection
This addendum applies to Z-MAX cabinets with integral Overcurrent Protective devices, also
known as Z-MAX with breakers. This manual provides additional information required to
install these cabinets which is not currently contained in the Z-MAX Users’s & Installation
Guide. In order to effectively install this system, the following documentation should be
reviewed:
•
This Addendum
•
The Z-MAX Installation & User’s Guide
•
Any online tips, technical articles, or other updated documentaiton, found at
http://www.leviton.com
•
Any additional documetnation included as part of this package
Overview
Z-MAX with integral overcurrent protection is an assembly comprised of a Z-MAX relay section
and a circuit breaker panelboard section. In lieu of feeding the relays from an external
panelboard they are factory-wired to a circuit breaker contained in an integral panelboard. The
feed becomes a single large feeder to the panelboard, either to lugs or to an optional main
circuit breaker. This product is available with a 24 or 48-module relay section and the
panelboard sections which generally fall into one of the following categories:
•
225A max., 120/240V, 1-Phase, 3-Wire, 60Hz., Lugs or Main Breaker
•
225A max., 208Y/120V, 3-Phase, 4-Wire, 60Hz., Lugs or Main Breaker
•
400A max., 480Y/277V, 3-Phase, 4-Wire, 60Hz., Lugs or Main Breaker
•
250A max., 600Y/347V, 3-Phase, 4_Wire, 60Hz., Lugs or Main Breaker
Installation Steps
Step 1:
Locate the input feeder lugs, Phase A, B, C (L1, L2 for single-phase units), N and
G. They are located at the bottom of the cabinet in the 120V units and in the top
of the right-hand section of the cabinets in the higher voltage units.
Step 2:
Install the conduit and wire appropriate for the size of feeder being supplied to
serve the scheduled connected load, not exceeding the panel's maximum rating.
Use min. 75°C copper wire at 75°C ampacity.
Step 3:
Terminate the feeder cables to the input terminals as marked and tighten them to
the torque specified on the markings. Feeder terminals will accept the wire sizes
as shown in Figure 1.
Step 4:
If control power supply leads are not already terminated to the breaker panel
they may be terminated to an available breaker in the panel or to an external
panelboard. They must be wired with branch circuit wiring sized for the rating of
the overcurrent protection device.