Emerson GXT3 230V 5.3.1Distribution Box Electrical Connections, Branch circuit breaker ratings

Installation and Configuration

5.3.1Distribution Box Electrical Connections

Electrical connections are made through a removable power distribution box that attaches to the rear of the UPS.

The installer must provide an upstream branch circuit breaker. The input circuit breaker on the distribution box and the output circuit breaker on the rear of the power distribution box disconnect all power between the main cabinet and the distribution box.

Models equipped with a manual bypass breaker pass bypass power directly to the bypass breaker from the input terminal block. The input circuit breaker on the distribution box does not disconnect power from the manual bypass breaker.

Table 1 Branch circuit breaker ratings

Unit Rating

5000VA

Maximum Breaker Rating

D Type 35A

Figure 10 Distribution box electrical connections diagram

Mains Input

External

Branch CB

MB CB

Output

Input

CB

Output

CB

UPS-PFC,

Battery Inverter

HardwireTerminal Block Connections

Conduit entry holes are provided on the rear and side of the box. Input and output wiring should not share the same conduit. Emerson recommends using strain relief when installing the wire.

Table 2 Electrical specifications

	Recommended	Recommended Wire	Maximum Wire	Terminal
	(Maximum) External	(Including ground wire)	Accepted by	Tightening
UPS Model	Overcurrent Protection	(75°C copper wire)	Terminal Block	Torque
Liebert GXT3	35A	4mm2 (10AWG)	6mm2 (8AWG)	1.13 Nm (10 in-lb)
5000RT230U

For 120V input, connect

the L1,L2 inputs as shown at right

L1	L2/ N	L1	L2/ N
	OUTPUT	INPUT

For 230V input, connect

the L1, L2 inputs as shown at right

NOTE

L1	L2/ N	L1	L2/ N
	OUTPUT	INPUT

The installer must provide circuit breaker protection according to local codes. The mains disconnect should be within sight of the UPS or have appropriate an appropriate lock-out. Maintain service space around the UPS or use flexible conduit.

The installer must provide output distribution panels, circuit breaker protection or emergency disconnects according to local codes. Output circuits must not share a common conduit with any other wiring.

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