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Electrical Budget Worksheet (adapted from Pacific Cup)
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1
Calculate your DC Loads:
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4
LightingAmpsHoursAH/Day
5
Running Lights0.0
6
Masthead Tricolor Light0.0
7
Anchor Light0.0
8
Strobe Light0.0
9
Spreader Lights0.0
10
Cabin Light (small)0.0
11
Cabing Light (big incandescent)0.0
12
Cabing Light (flourescent)0.0
13
Instrument Lights0.0
14
Handheld Spot Light0.0
15
Other0.0
16
Lighting AH
0.0
17
18
GalleyAmpsHoursAH/Day
19
Refrigeration0.0
20
Prop Solenoid0.0
21
Other0.0
22
Galley AH0.0
23
24
Electronics
AmpsHoursAH/Day
25
Autopilot0.0
26
VHF (receive)0.0
27
VHF (transmit)0.0
28
SSB (receive)0.0
29
SSB (transmit)0.0
30
SSB Digital controller0.0
31
GPS0.0
32
Instruments0.0
33
Weather fax receiver0.0
34
Radar (standby)0.0
35
Radar (transmit)0.0
36
AIS0.0
37
Energy Monitors0.0
38
Stereo0.0
39
Computer (screen off)0.0
40
Computer (screen on)0.0
41
Computer (serial adapter)0.0
42
Other0.0
43
Electronics AH
0.0
44
45
Plumbing
AmpsHoursAH/Day
46
Fresh Water Pump0.0
Calculate using average water consumption.
47
Bilge Pump(s)0.0
This should be zero unless the boat leaks.
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Other0.0
49
Plumbing AH
0.0
50
51
InverterWattsHrs/dayAH/Day
All values assume inverter efficiency = 85%.
52
Microwave0.0
Power factor may mess up this estimate.
53
Chargers (nicad)0.0
54
Other0.0
55
Inverter AH
0.0
56
57
Gross Energy Consumption AH/Day
0.0
58
59
2
Alternative Energy Sources
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DeviceAmpsHrs/dayAH/day
61
Solar, avg0.0
Assumes one large panel.
62
Wind, avg0.0
Assumes AIR Marine wind turbine in good location.
63
Water, avg.0.0
64
Contribution of AES AH/Day0.0
65
66
3
Net Energy Consumption, AH/Day
0.0
67
68
4
Desired Hours Between Charging
69
70
5
Range of Battery Use
For example, from 50-85% state of charge.
71
72
6
Recommended Battery Capacity
#DIV/0!
73
74
7
Alternator Output, Amps
Target would be 25% flooded, 40% gel, of capacity.
75
76
8
Charge Efficiency Factor
0.85
Gels = 95%, flooded cells = 85%
77
78
9
Minimum Minutes to Charge
#DIV/0!
Assumes alternator runs at full output.
79
80
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82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100