277/480 VAC Four wire plus Ground
Found in Main Disconnect Switches,
Main Distribution panels, Load Centers
Sub panels and equipment locations.
Line
Line
Line
Neutral
Ground
WHITE
BLACK
BLACK
BLACK
277 v
277 v
480 v
480 v
480 v
277 v
Model AG4803C3
Type 1 or Type 2 Surge Protection Device
INSTALLATION INSTRUCTIONS
480 VAC Three wire plus Ground
Found at Service Entrances and
Meter Cabinets.
Line
Line
Line
Grounded Neutral
WHITE
BLACK
BLACK
BLACK
480 v
480 v
480 v
277 v
277 v
277 v
Risk of Electric Shock
WARNING
• Thoroughly read instructions before installing unit.
• Installation and Service to be performed by a
qualified licensed electrician.
• Intended for indoor or outdoor use.
• All wiring must comply with all state and local
electrical codes including the National Electrical
Code and/or Canadian Electrical Code.
• Suitable for use on a circuit capable of delivering
not more than 50,000 rms symmetrical amperes.
• This unit contains no serviceable parts.
• This product does not protect against direct
lightning strikes.
Type 1 installation:
A typical installation of a type 1 SPD will be connected between the secondary of the service transformer and the
line side of the service panel. This installation is intended to be installed without overcurrent protection to the SPD.
Type 2 installation:
A typical installation of a type 2 SPD will be connected to the load side of the service panel and is intended to be
installed with overcurrent protection to the SPD.
1. Determining location:
• Ensure conductor lengths are as short and straight as possible for best performance. Do not coil excess
wire. The SPD functions best if all bends in wires are rounded, ideally to a 4” radius. Hard 90 degree bend
will reduce efficiency. Cut all leads to the correct length. Do not coil excess leads.
• Install appropriate weatherproof fittings if the unit is to be mounted outside.
• Bracket part number AG1BRKT is also available if needed.
2. Connect wires as shown within diagrams. If your application does not match one of the diagrams below
consult your supplier.
3. Ensure all mounting and electrical connections are correct and securely fastened. Once energized the green
indicator LED will be ON.
Maintenance:
¡
AC Voltage SPD:
• Periodically check SPD to ensure green indicator LED is ON. If green LED is OFF protection has diminished
and the SPD should be replaced immediately.
277/480VAC WYE 3 PHASE
IMPORTANT SAFETY INSTRUCTIONS • SAVE THESE INSTRUCTIONS
