Connecting the Equipment Ground

FreedomHF_IC_01-Installation.fm Page 14 Monday, December 24, 2007 9:47 AM

WARNING: Fire hazard

Never operate the Freedom HF without properly connecting the equipment ground. A fire hazard could result from improper grounding.

The Freedom HF has a ground stud on the side of the unit as shown in Figure 1-4. Follow the guidelines in “Grounding Locations” to connect the inverter’s chassis to the ground.

Equipment ground stud

Figure 1-4DC Panel Connections

Grounding Locations

You must connect the equipment ground stud to a grounding point— usually the vehicle’s chassis or DC negative bus ground—using recommended copper wire (if insulated then green insulation with or without one or more yellow stripes) or larger.

For recommended equipment ground cable size, see below.

Table 1-3Recommended Equipment Ground Cable size

	Minimum equipment ground cable size
Application	(Stranded cable is recommended)

Recreational Vehiclea	No. 8 AWG
Marineb	No. 3 AWG (Freedom HF 1000)
	No. 1/0 AWG (Freedom HF 1800)

Note: There are no restrictions on length for the equipment ground cable.

a.Based on US National Electrical Code NFPA70, Article 551, par. 551-20c 2005 version.

b.Based on ABYC E-11 11.18 dated 07/03

In general, the equipment ground cable size must not be smaller than one AWG size than the supply cable.

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This guide for use by qualified installers only

1000, 1800 specifications

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