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abyc electrical elements troubleshooting

Presenters:Gregory T. Davis, NAMS-CMSJerry Starczowski, AMS-SAMSABYC Standards Certified. Marine Surveyors, Engineers, Consultants. Introductions Let Me Help You Avoid This. ABYC E11 AC and DC Electrical Systems on Boats. This standard is a guide for the design, construction, and installation of alternating current (AC) electrical systems on boats and of Direct Current (DC) electrical systems on boats.Federal Law: 33CFR Subpart I

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abyc electrical elements troubleshooting

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    1. ABYC Electrical Elements & Troubleshooting

    4. Introductions Let Me Help You Avoid This

    5. ABYC E11 AC and DC Electrical Systems on Boats This standard is a guide for the design, construction, and installation of alternating current (AC) electrical systems on boats and of Direct Current (DC) electrical systems on boats. Federal Law: 33CFR Subpart I “Electrical Systems” This subpart applies to all boats that have gasoline engines for mechanical or electrical power or propulsion, except outboard engines

    6. Tools of the Trade

    7. Elements of a DC System

    8. Elements of a DC System Cont…

    9. Overcurrent Protection Good place for the dead short demoGood place for the dead short demo

    10. ABYC E 11 over current protection DC systems Ungrounded conductors within 7” of the source of power measured along the conductor Exceptions: (ungrounded conductor) If the conductor is directly connected to the battery and entirely contained within a sheath- 72” If the conductor is connected to a source of power other than the battery and entirely contained within a sheath- 40” Not required on conductors from self-regulating alternators with integral regulators if less than 40” and within a sheath Not required- Pigtails less than 7” in length Conductors to a battery charger, or charging source require protection within the charging source or within 7” based upon the output of the charging source

    11. ABYC E 11 over current protection AC Systems Circuit breakers must meet requirements of UL 489 “Molded case circuit protectors for circuit breaker enclosures”, or UL 1077 “Supplementary protectors for use in Electrical Equipment” and: Manually reset trip free type Capable of interrupt capacities in table IV-8 Shall open both current carrying conductors (120VAC single phase) unless equipped with polarity indicator or transformer If the main shore power breaker is more than 10’ from the entry of shore power additional breakers are required. Note: Newer version requires ARC fault breaker at the entry point.

    12. Wire & Splicing You can do a splicing demo hereYou can do a splicing demo here

    13. Wire Stranded, not solid copper (prefer tinned) Gauge to load (Amps) and run length (voltage drop) Rated for use in engine room AC wire Stranded, not solid copper Rated at 600 V; flexible cords 300V Temp at least 140F dry Flame retardant and moisture resistant

    14. Motor Loads Clamp the armature of the blue motor and trip the 7.5 amp breaker, explain what would happen with a 30 amp breaker. Also explain that a breaker trips slower than a fuse.Clamp the armature of the blue motor and trip the 7.5 amp breaker, explain what would happen with a 30 amp breaker. Also explain that a breaker trips slower than a fuse.

    15. Elements of DC Troubleshooting Just some examples here, nothing earthshatteringJust some examples here, nothing earthshattering

    16. Let’s Talk AC Safety

    17. Basic System & Components Point out galvanic isolator, ELCIPoint out galvanic isolator, ELCI

    18. Introducing the Equipment Leakage Circuit Interrupter

    19. Reverse Polarity

    20. Cord Safety

    21. Shore power problems

    22. AC main breaker- crimp problem

    23. Battery bank fire

    24. Voltage drop- Resistive load fire

    25. Questions?

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