Xantrex Technology FP 3000-12 Typical Power Consumptlon, AMP-HOURCONSUMPTION FORMULAS, (AC amps x 10) x 1.1 x hours of operation = DC amp hours

BATTERIES

To achieve 50% cycling you should calculate your amp-hour consumption between charging cycles and use a battery bank with twice that capacity**. Each AC appliance or tool has a rating plate on it and will be rated in either AC amps or watts or AC VA (volt-amps) apparent power. To calculate amp-hour consumption, use one of the formulas to the right to calculate the DC amp-hour draw for a 12 volt system.

Calculate the amp hours for every AC appliance or tool that will be operated on the inverter. This will provide the total number of amp hours used between recharges. Size the battery bank using this number as a guideline. A good rule to follow is to size the battery bank a minimum of two times larger than the total amp-hour load requirement. Plan on recharging when 50% discharged.

AMP-HOUR CONSUMPTION FORMULAS(AC amps x 10) x 1.1 x hours of operation = DC amp hours(watts/ DC voltage) x 1.1 x hours of operation = DC amp hours(AC VA/ DC voltage) x 1.1 x hours of operation = DC amp hours

DC voltage is 12, 24 or 32, depending on your system.

In all formulas, 1.1 is the correction factor for

inverter efficiency.

Typical Power Consumptlon

The chart identifies typical power consumption for common AC loads. Use it as a guide when identifying your power requirements.

	**Batteries are typically charged to 85% of full charge								Many electric motors have momentary starting
	when charging with alternators without three-stage
	regulators.											requirements well above their
												operational rating. Start-up watts
			Typical Power Consumption									are listed where appropriate.
	Appliance		Typical			Appliance Run Times / Amp Hours						Individual styles and brands of
												appliances may vary.
			Wattage
				5 Min.	15 Min.	30 Min.	1 Hr.	2 Hr.	3 Hr.	8 Hr.	24 Hr.
	13" Color TV		50	.33	1	2	4	8	12	32	96	If using the same battery bank
												for the inverter and other DC
	19" Color TV		100	.66	2	4	8	16	24	64	192
												loads, be sure to consider the
	VCR		50	.33	1	2	4	8	12	32	96
												power consumption of the DC
	Lamp		100	.66	2	4	8	16	24	64	192
												loads when sizing the battery
	Blender		300	2	6	12
												bank.
	Laptop Computer		50	.33	1	2	4	8
	Curling Iron		50	.33	1	2
	3/8 Power Drill		500	3.3	10	20
	Icemaker*		200			2.6	5.2	10.4	15.6	41.6	83.2
	Coffee Maker		1000	6.6	20	40	80	160
	3 cu' Refrigerator*		150			2	4	8	12	32	96
	20 cu' Refrigerator*		750			21	42	84	126	336	672
	Compact Microwave		750	5	15	30	60	120	180
	Full Size Microwave		1500	10	30	60	120	240	360			NOTE Certain laser printers, breadmakers,
	Vacuum		1100	7.3	22	44	88	176	264			digital clocks and appliance/tool chargers
	Number in each box represents the total Amp hours used (@ 12 volt DC) based on various continuous run times.											may not operate on modified sine wave.
14		*Note refrigeration is typically calculated using a 1/3-duty cyle.