2
Instruction Booklet
IB48091
Effective October 2022
Instructions for Eaton’s AMPGARD
®
NEMA 3R motor control center
EATON
www.eaton.com
m
WARNING
HAZARD OF ELECTRICAL SHOCK OR BURN.
THE EQUIPMENT MUST BE OPERATED WITHIN ITS NAMEPLATE RATINGS.
OPERATING THE EQUIPMENT OUTSIDE OF ITS RATINGS MAY CAUSE FAIL-
URE RESULTING IN PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR
DEATH.
ALL APPLICABLE SAFETY CODES, SAFETY STANDARDS, AND SAFETY REG-
ULATIONS MUST BE STRICTLY ADHERED TO WHEN INSTALLING, OPERAT-
ING, OR MAINTAINING THIS EQUIPMENT.
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WARNING
SAFETY WARNINGS
READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING
INSTALLATION, OPERATION, OR MAINTENANCE OF THE EQUIPMENT.
• OBSERVE NATIONAL ELECTRICAL CODE (NEC), OCCUPATIONAL SAFETY
AND HEALTH ACT (OSHA), AND LOCAL PROCEDURES AND STANDARDS.
THIS INCLUDES VISUAL INSPECTIONS WHILE THE DOOR IS OPEN,
MAKING ANY ADJUSTMENTS INSIDE OR OUTSIDE THE ENCLOSURE,
PERFORMING MAINTENANCE, AND/OR INSTALLING REPLACEMENT
PARTS.
• THE END USER IS RESPONSIBLE FOR CONFORMING TO ALL
APPLICABLE CODE REQUIREMENTS WITH RESPECT TO GROUNDING
THE EQUIPMENT.
• ENSURE THAT YOU ARE WEARING PROPER PERSONAL PROTECTIVE
EQUIPMENT (PPE) TO SAFEGUARD YOURSELF AGAINST THE HAZARDS
PRESENT DUE TO MEDIUM VOLTAGE PROXIMITY.
• DISCONNECT ALL LOW VOLTAGE AND MEDIUM VOLTAGE POWER
SOURCES BEFORE STARTING ANY WORK ON THE EQUIPMENT PER
OSHA AND LOCKOUT PROCEDURES.
• VERIFY THAT THE VOLTAGE HAS BEEN REMOVED.
• DISCONNECT THE ISOLATION SWITCH BY USING THE HANDLE. NEVER
LEAVE THE ISOLATION SWITCH IN AN INTERMEDIATE POSITION.
ALWAYS MOVE THE HANDLE TO THE FULLY OPEN OR FULLY CLOSED
POSITION.
• USE ADEQUATE FALL PROTECTION WHEN WORKING ABOVE GROUND
LEVEL.
Section 1: Introduction
1.1 Purpose
The purpose of this instruction booklet is to address typical consider-
ations for the application and installation of the rain proof enclosure .
Included in this are:
•
Equipment ratings;
•
Receiving, handling, and storing the equipment; and
•
Physical constraints of the job site .
The purpose of NEMA 3R enclosure is to provide protection to
AMPGARD
®
products in the outdoor locations . It is a rain proof
enclosure which will provide protection to enclosed gear .
The performance of this equipment is greatly influenced by the
installation conditions, protective scheme, grounding method, and
the actions of the operator . Application of AMPGARD equipment
does not supersede the requirement of adequate PPE .
This instruction booklet does not purport to cover all possible contin-
gencies, variations, and details that may arise during installation,
operation, or maintenance of this equipment . If further information
is desired regarding this product, contact your local Eaton sales
office .
1.2 Strategy
NEMA 3R enclosure is required in various applications such as water
and wastewater, agriculture, mining, minerals, oil, and gas to provide
protection to enclosed gear . For various configurations of medium
voltage motor control centers, NEMA 3R enclosure with widths of
20, 26, 32, 44, and 48 inches are available .
Also, the incoming line with the capability to connect with a medium
voltage switch gear and a transformer is available .
