This guide for use by qualified installers only.

Basic Installation Procedures

AC Output Neutral Bonding

The neutral conductor of the Freedom HF’s AC output circuit (i.e., AC Output Neutral) is automatically connected to the safety ground during inverter operation. When AC utility power is present and the Freedom HF is charging, this connection is not present, so that the utility neutral (i.e., AC Input Neutral) is only connected to utility ground at your source. This conforms to National Electrical Code, which requires that separately derived AC sources (such as inverters and generators) to have their neutral conductors tied to ground in the same way that the neutral conductor from the utility is tied to ground in only one place. Check the regulations for your specific application to ensure that the installation will comply with the necessary requirements. In other words, the AC Input Neutral and Output Neutral must be isolated from each other.

AC Grounding

As per UL458 SA29.5, for all grounded AC cord-connected marine inverter/chargers: The Freedom HF 1055 EMS and the Freedom HF 1800 EMS should be grounded to reduce risk of electric shock. Make sure that the three-prong plug is plugged into properly installed and grounded AC wall outlet in accordance with all local codes and ordinances.

As per UL458 SA29.5, for all permanently connected marine inverter/ chargers: The rest of the Freedom HF models should be connected to a grounded, metal, permanent wiring system. Also, make sure that an AC ground wire is connected to the AC ground terminal on the unit. Do not just connect the line and neutral wires.

All connections to a unit should comply with all local codes and ordinances.

DC Cabling

This includes all the cables and connectors between the batteries, the DC disconnect and over-current protection device, and the Freedom HF. Most mobile installations require multi-strand insulated cables for flexibility and durability in high vibration environments and require disconnects and over- current devices. Electrical wiring sizes are indicated by AWG notation.

Under the AWG standard, a larger gauge number indicates a smaller wire diameter. Wire size is usually marked on the larger sized cables. Table 2 specifies the minimum recommended DC cable size and maximum fuse size for the Freedom HF. The DC cables must be copper and must be rated 75 °C minimum. The cables should be terminated with lugs that fit the DC stud terminals snugly (8 mm or 5/16 in. hole size).

Table 2 Recommended Cable and Fuse Sizes

 

Cable Length:

 

 

 

Battery to Inverter

 

Maximum battery Fuse

Inverter/Charger

(one way)

Minimum Cable Size

Size

 

 

 

 

Freedom HF 1000/

Less than 5 feet

No. 2 AWG

150 Adc

1055

(1.5 meters)

 

 

 

 

 

 

Freedom HF 1800

Less than 5 feet

No. 2/0 AWG

250 Adc

 

(1.5 meters)

 

 

Note: Xantrex recommends not using a cable longer than 5 feet (1.5 meters) in each direction. Cable sizes above are based on the US National Electrical Code Table 310.17 - 75C cables, assuming an ambient temperature of 30 °C cables.

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Xantrex Technology 806-1840-02, 806-1020, 806-1055, 806-1840-01 manual AC Output Neutral Bonding, AC Grounding, DC Cabling

806-1055-02 806-1840, 806-1055, 806-1020, 806-1840-01, 806-1840-02 specifications

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