Presentation notes from Bill Kautter's 2-5-11 Marine Electrical Systems Seminar.

1. Marine Electrical Systems on Auxiliary Sailboats

6. Shore Power Connection

7. Shore Power Cables

9. AC Only Panels

10. Integrated AC / DC Electrical Panel

12. Reverse Polarity Indicator Circuit

15. Battery Chargers 20 amps max 50 amps max

17. Inverter / Chargers

19. Hot Water Heaters

20. Galvanic Isolator

21. Bonding (Grounding) System

23. Galvanic Isolator

27. Main Battery Switch

29. DC Only Panels

30. AC / DC Electrical Panel

34. Series / Parallel Configurations Two 6 Volt Batteries in Series Two 12 volt batteries in parallel

41. Flooded Electrolyte Batteries

42. AGM Batteries

43. Gel Cell Batteries

44. Lead Acid Battery State of Charge After 3 hour rest State of Charge 12 Volt battery Volts per Cell 100% 12.7 2.12 90% 12.5 2.08 80% 12.42 2.07 70% 12.32 2.05 60% 12.2 2.03 50% 12.06 2.01 40% 11.9 1.98 30% 11.75 1.96 20% 11.58 1.93 10% 11.31 1.89 0 10.5 1.75

48. Lead acid Battery Charge Curves

53. Marine Engine Alternators

54. Yanmar 2/3 QM

55. Yanmar 2/3 QM

57. Starting Motor & Solenoid

58. Yanmar Starter Motors

65. Wire Gauge for 3% Voltage Drop (Critical Loads) Current (Amps) 5 10 15 20 25 30 40 50 60 70 80 90 100 Length (Feet) Wire Gauge (AWG) 10' 18 14 12 12 10 10 8 8 6 6 6 4 4 15' 16 12 10 10 8 8 6 6 4 4 4 2 2 20' 14 12 10 8 8 6 6 4 4 4 2 2 2 25' 14 10 8 8 6 6 4 4 2 2 2 1 1 30' 12 10 8 6 6 4 4 2 2 2 1 1/0 1/0 40' 12 8 6 6 4 4 2 2 1 1/0 1/0 2/0 2/0 50' 10 8 6 4 4 2 2 1 1/0 1/0 2/0 3/0 3/0 60' 10 6 6 4 2 2 1 1/0 2/0 1/0 3/0 3/0 4/0

66. Wire Gauge for 10% Voltage Drop (Non-Critical Loads) Current (Amps) 5 10 15 20 25 30 40 50 60 70 80 90 100 Length (Feet) Wire Gauge (AWG) 10' 18 18 18 16 16 14 14 12 10 8 8 6 6 15' 18 18 16 16 14 14 12 12 10 8 8 6 6 20' 18 16 16 14 12 12 10 10 8 8 8 6 6 25' 18 16 14 12 12 10 10 8 8 8 6 6 6 30' 18 16 14 12 10 10 8 8 8 6 6 6 4 40' 16 14 12 10 10 8 8 6 6 6 4 4 4 50' 16 12 10 10 8 8 6 6 4 4 4 4 2 60' 16 12 10 8 8 8 6 4 4 4 2 2 2

67. Wire Diameter versus Gauge AWG Diameter (inches) AWG Diameter (inches) OOOO 0.46 8 0.1285 OOO 0.4096 9 0.1144 OO 0.3648 10 0.1019 0 0.3249 11 0.0907 1 0.2893 12 0.0808 2 0.2576 13 0.072 3 0.2294 14 0.0641 4 0.2043 15 0.0571 5 0.1819 16 0.0508 6 0.162 17 0.0453 7 0.1443 18 0.0403

69. Marine Grade Wire – Tinned Stranded Copper Tinned stranded copper wire. Corroded copper wire. Clean copper wire

70. Wire Terminals

72. Wire Strippers

73. Wire Terminal Examples Excellent crimp on small terminal. Notice the slight extension of wire beyond the crimp. Heavy gauge wire terminals. Sealing heat shrink tubing was used. Notice the small amount of sealing compound to the left of the tubing. This should be a water tight connection with maximum corrosion resistance.

74. VHF Radio Antenna Coax Cable Coax cable has center conductor, spacer, shield, and outside sheath or cover. Spacing between conductor is critical. Should not be bent to small radius as this will change spacing of conductor and reduce signal. For marine applications both center conductor and shield should be tinned copper. Best connectors require special tools for installation but there are tool-less versions.

75. Shrink Tubing, Tie Wraps, Electrical Tape