Windy Nation VertaMax Power Inverter - Manual (Page 11)

VertaMax User Manual
Revision 1.0
50 8AWG 6AWG 6AWG 4AWG 4AWG 2AWG 2AWG 1AWG 1/0AWG 1/0AWG 3/0AWG NR NR
NOTE: Applicable to conductors: Rated 0 Through 2000 Volts with an a mbient Temperature of 30°C (86°F)
IMPORTANT: The ampacity table is for a single cable. The VertaMax uses a dual cable connection so
reference the wire thickness table to establish a single cable or a dual cable solution that will provide an
equal conductor thickness.
4.3.2 Wire Thickness
AWG
Diameter
inches (mm)
Ohms per
1000ft
Break
Force Square
mm2
16 0.051 (1.29) 4.016 75 lbs 1.30
14 0.064 (1.63) 2.525 119 lbs 2.08
12 0.081 (2.05) 1.588 197 lbs 3.30
10 0.102 (2.59) 0.999 314 lbs 5.26
8 0.129 (3.26) 0.628 480 lbs 8.30
6 0.162 (4.11) 0.395 760 lbs 13.30
4 0.204 (5.19) 0.249 1210 lbs 21.15
2 0.258 (6.54) 0.156 1930 lbs 33.62
1 0.289 (7.35) 0.124 2430 lbs 42.41
0 (1/0) 0.325 (8.25) 0.098 3060 lbs 53.49
00 (2/0) 0.365 (9.27) 0.078 3860 lbs 67.43
000 (3/0) 0.410 (10.4) 0.062 4860 lbs 85.01
0000 (4/0) 0.460 (11.68) 0.049 6120 lbs 107.22
4.4 B ATTERIES
4.4.1 Battery Life
The VertaMax can draw lots of amps from your battery when operating. If you are using it for extended
periods of time, you will want to recharge occasionally to maintain the charge in the battery. In addition, the
power inverter will also draw a small current, less than 600mA, when turned off and not operating. Therefore,
it should be disconnected from your battery if it will not be used for more than a day. The following chart
shows typical operation time for typical batteries for various loads.
Power Usage Current @ 12V
50A/h Battery
Operating Time
100A/h Battery
Operating Time
100 watt 9 Amps 5.5 hours 11 hours
200 watt 19 Amps 2.6 hours 5.2 hours
500 watt 47 Amps 1 hour 2 hours
*All Values are approximate
4.4.2 Actual Battery Current Draw
Approximate 12 volt current draw is the load in watts divided by 10. Thus a 60 watt light bulb plugged into the
inverter will cause the inverter to draw 6 amps (60 / 10 = 6) from the 12 volt power supply (e.g. battery).
Batteries are rated in several different ways:
x Peak cranking amps - This has little to do with how long an inverter can supply power, so it is not a
useful number for inverter operation.
x Battery reserve capacity - This number shows how long a battery can supply a given current,
typically 25 amps, before the battery voltage reaches a low voltage. Therefore, a battery rated at 200
minutes reserve can deliver 25 amps for 200 minutes before it is discharged. Ampere-hour capacity -
This rating indicates how many amps a battery can deliver over a period of time, typically 20 hours.
Therefore, a 100 amp-hour battery can deliver 5 amps for 20 hours (5 x 20 = 100).
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