Xantrex Technology STXR1500, STXR2500 manual 35

Installation

> 100 feet (30 m)				Main Utility	Utility
Solar		ST Unit		Breaker Panel	Meter
				Ground
Array
		AC Wiring		Bar	AC
	DC Wiring			AC
		Ground			Wiring to
	(and ground)			Wiring	Utility
		Bar
Ground				Bonded Neutral Wire
Frame to
Pole	Array Ground	Sun Tie Ground Wire		Utility Ground Wire
	Wire
	Buried Copper Wire		Buried Copper Wire
Array Ground Rod		Sun Tie Ground Rod		Utility Ground Rod

Figure 2-13 Long distance grounding

							PV
							ARRAYS
			STXR UNIT
					PV COMBINER BOARD
	SOV			–	+
					20 A	+	+
	LIGHTNING		PV GROUND FAULT
A					–		–
	ARRESTOR		BREAKERS (OPTION)
	(OPTION)		100 A		20 A	+	+
15 A				100 A	–		–
		+	+
L1	L1				20 A	+	+
15 A					–		–
L2	L2 INVERTER				20 A	+	+
			–		–		–
	G	–
G					20 A	+	+
			1 A
GROUND					–		–
BAR
							+
					20 A	+
					–
	Main					B
	Breakers						Extra Ground Rod
							Only Required on
G			L1	L2			Long Runs > 100
							feet (30 m).
L2
	Sun-Tie	NEUTRAL			L1
L1	Breakers
						UTILITY
		GROUND	UTILITY METER
					L2	GRID
MAIN SERVICE PANEL					N
NOTES:			N

￿INSTALLER CONNECTIONS REQUIRED AT POINTS (A) AND (B) TO THE INVERTER ENCLOSURE.

￿ THE UTILITY METER MAY BE A	Buried copper wire if second ground rod is used
BI-DIRECTIONAL METER OR DUAL
METERS.

￿OBTAIN UTILITY COMPANY APPROVAL BEFORE INSTALLING.

Figure 2-14 Simplified electrical wiring diagram

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