Instructions

3.7.1 AC Input Connector, 1500W models

3.7.2 AC Input Connector, 750W models

3.7.3 AC Input Cord

3.7.4 AC Input Wire Connection, 1500W models

TheAC input connector is a 3-Terminal wire clamp located on the rear panel:

Phoenix Contact P/N: FRONT4-H-7.62/3

Use suitable wires and tightening torque as follows:

1. Wire diameter: 12AWG or 10AWG.

2. Tightening torque: 4.4-5.3Lb-inch. (0.5-0.6Nm).

An IEC connector is provided on the rear panel for connecting the unit to the AC power source with

an AC cord. The IEC connector also provides the safety ground connection while the AC cord is

plugged into an appropriate AC receptacle.

Refer to section 1.3.4 for details of the AC input cords recommended for the 750W and the 1500W

models.

1.Strip the outside insulation of theAC cable approx. 10cm. Trim the wires so that the ground wire is

10mm longer than the other wires. Strip 14mm at the end of each of the wires.

2.Unscrew the base of the strain relief from the helix-shaped body. Insert the base through the

outside opening in theAC input cover and screw the locknut securely (11-14 Lb-inch.) into the

base, from the inside.

3.Slide the helix-shaped body onto the AC cable. Insert the stripped wires through the strain relief

base until the outer cable jacket is flush with the edge of the base. Tighten (16-18 Lb-inch.) the

body to the base while holding the cable in place. Now the cable is securely fastened inside the

WARNING

The AC input cord is the disconnect device of the power

supply. The plug must be readily identifiable and accessible to

the user. The AC input cord must be no longer than 3m.

Fig.3-2: Stripped Wires installed in Strain Relief

WARNING

Some components inside the power supply are at AC voltage even when the On/Off switch is in the

“Off” position. To avoid electric shock hazard, disconnect the line cord and load and wait two minutes

before removing cover.

Screw-on

Locknut

CAUTION

AC Input Wires No Conductor Pretreatment: Phoenix Contact clamping parts are designed so

that all kinds of copper conductors can be clamped without pretreatment.

It is forbidden to solder the conductors. The solder tin yields and fractures under high pressure. The

result is increased contact resistance and an excessive temperature rise. In addition, corrosion

caused by pickling or fluxes has been observed on soldered conductor ends. Notch fractures at the

transition point from the rigid to the flexible conductor area are also possible.