Windy Nation VertaMax Power Inverter - Manual (Page 10)

VertaMax User Manual
Revision 1.1
usually 25 ampere) or ampere-hour capacity (a measure of how many amperes a battery can deliver for a
specified length of time).
Example – Reserve capacity: a battery with a reserve capacity of 180 minutes can deliver 25 ampere for 180
minutes before it is completely discharged.
Example – Ampere-hour capacity: a battery with an ampere-hour capacity of 100 ampere-hours can deliver
5 ampere for 20 hours before it is completely discharged.
To determine the battery ampere-hour capacity:
1) Determine how many watts each piece of AC equipment (TV, light bulbs, etc) consumes. This can
normally be found on the product label. If only the current draw is given, multiply the current draw by
115 to get the watt consumption.
2) Estimate the time (in hours) that each piece of equipment will be running between battery charging
cycles.
3) Calculate the total watt-hours of energy consumption (power in Watts x operating time in hours)
using the average power consumption and the total estimated running time (in hours). Power x
Operating Time = Watt-Hours.
4) Divide the watt-hours by 10 to determine how many battery (12 volt) ampere-hours will be
consumed.
4.2 T YPICAL P OWER C ONSUMPTION
Appliance Watts Appliance Watts
Stereo 200 Microwave - 1000 W 1000
Table Fan 200 AC (5,000 BTU) 700
TV-VCR 250 Computer 300
Small Refrigerator 350 Hair Dryer 1000
Hand Drill - 1/2" 600 Coffee Maker 1200
Light Bulb - 100 W 100 Blender 400
4.3 W IRE G AUGE R EFERENCE
4.3.1 Ampacity Table
Load Amperage – Power @ 12VDC
10A
120W
20A
240W
30A
360W
40A
480W
50A
600W
60A
720W
70A
840W
80A
960W
100A
1200W
120A
1440W
160A
1920W
200A
2400W
250A
3000W
Ca
b
le
L
en
g
th
(f
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t)
2 16AWG 16AWG 14AWG 12AWG 10AWG 8AWG 8AWG 6AWG 4AWG 2AWG 2AWG 2/0AWG 3/0AWG
4 16AWG 16AWG 14AWG 12AWG 10AWG 8AWG 6AWG 6AWG 4AWG 2AWG 1AWG 2/0AWG 4/0AWG
6 16AWG 14AWG 12AWG 10AWG 8AWG 6AWG 6AWG 4AWG 2AWG 2AWG 1/0AWG 3/0AWG 4/0AWG
8 16AWG 14AWG 12AWG 10AWG 8AWG 6AWG 6AWG 4AWG 2AWG 2AWG 1/0AWG 3/0AWG 4/0AWG
10 16AWG 14AWG 12AWG 10AWG 8AWG 6AWG 6AWG 4AWG 2AWG 2AWG 1/0AWG 3/0AWG 4/0AWG
12 14AWG 14AWG 12AWG 10AWG 8AWG 6AWG 6AWG 4AWG 2AWG 2AWG 1/0AWG 3/0AWG 4/0AWG
16 14AWG 12AWG 12AWG 10AWG 8AWG 6AWG 6AWG 4AWG 2AWG 2AWG 1/0AWG 3/0AWG 4/0AWG
20 14AWG 12AWG 10AWG 8AWG 6AWG 6AWG 4AWG 4AWG 2AWG 2AWG 2/0AWG 4/0AWG 4/0AWG
24 12AWG 12AWG 10AWG 8AWG 6AWG 4AWG 4AWG 2AWG 1AWG 1AWG 2/0AWG 4/0AWG 4/0AWG
28 12AWG 10AWG 8AWG 8AWG 6AWG 4AWG 4AWG 2AWG 1AWG 1AWG 2/0AWG 4/0AWG 4/0AWG
33 10AWG 10AWG 8AWG 6AWG 4AWG 4AWG 4AWG 2AWG 1AWG 1AWG 2/0AWG 4/0AWG 4/0AWG
42 10AWG 8AWG 6AWG 6AWG 4AWG 4AWG 2AWG 1AWG 1/0AWG 1/0AWG 3/0AWG 4/0AWG NR
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