8
All electrical wiring connections have a recommended tightening torque. The following
chart shows the required electrical tightening torque to allow safe operation.
Wiring Connections
aluminum/copper
Connector Mounting
Screws
300 IN-LBS
132 IN-LBS
Wire size range 3/0 to 500MCM copper and 4/0 to 500MM aluminum.
2:3 Open Type Transfer Switches:
Open type options allow transfer switches to be shipped with no enclosures. All open
type UL approved transfer switch will be required to be placed in a minimum size
enclosure to allow proper spacing between electrical components and the enclosure wall.
The following chart shows the minimum required dimensions to allow the safe operation
of these Switches.
Transfer Switch
Amperage Rating
Enclosure
Dimensions
(Height x Width x Diameter)
600A
60 x 30 x 10
The transfer switch must be in accordance with the following requirements:
For models OPT2600-2-120/240V and OPT2600-3-208/240V
1. The minimum spacing requirements per UL-1008 must not be less than 1/4”
through air and 3/8" over the surface of the insulating material. These measures
must exist between any uninsulated live part and another uninsulated live part of
opposite polarity, uninsulated grounded part other tan the enclosure or any
exposed metal part.
2. Not less than 1/2" measured over the shortest distance between any uninsulated
live parts and the walls of the metal enclosure, including fittings for conduit or
armored cable.
User Manual for the OPT2600 Series
Automatic
Transfer Switch
