Electrical Training And Inspections For Surveyors This one-day training program is designed by a surveyor, for surveyors, to assist in evaluating a boatâs electrical system during the course of a marine survey. d. Not allowing the engine to start when not in neutral. Qualification BMEEA-certified Marine Electrical Technician, an industry recognised qualification. What is the best way to prevent corrosion on a battery cable. What device is typically found to satisfy the required OC protection between a battery charger and the batteries? How many conductors may be attached to a single terminal stud? Tech A says that combined AC/DC panels boards are grounded via the DC negative bus. Pigtails less than 7 inches (175mm) in length are exempt from overcurrent protection requirements. Which is correct? Name three common gasses other than CO that may trigger a CO alarm: Name two likely possible causes of falsely trigger fire alarm in an engine room space. How high amperage is reasonable? To test the cable a technician would use the DVOM and check voltage at what two points? Tech A says they should use all series circuits to keep the wiring clean and simple. T or F: Because the shore power connection is a power source, the neutral conductor should be tied to ground at the point where it comes in to the boat (shore power cable connection). Technician B says if the genset has a dry stack exhaust it is not required to have an independent pump for the cooling system. What type of clamps are to be used for supporting wire bundles when routed over engines and machinery? When an inverter is producing AC power, the inverter output neutral conductor should be. According to ABYC Standard E-11, the distance from the shore power inlet to the main circuit over current protection should be within. A certification for vessel communications will include basic electrical practices for marine environments. Technician B says as long as total output load is, d) If its maximum overload current exceeds 120% of its rated output. How to become a Marine Electrician. This course is designed for those with a minimum of 3-5 years practical experience with marine electrics. d. Under no circumstances is this permitted. b. This position requires individuals to pass strict physical examinations, recruit training and course work. A-25.5.2 Output voltage and frequency shall be in accordance with ABYC E-8, Alternating Current (AC) Electrical Systems On ⦠A customer notes a reverse-polarity problem. Established in 1954, the American Boat & Yacht Council (ABYC) is a non-profit, member organization that develops voluntary safety standards for the design, construction, maintenance, and repair of recreational boats. When more than one shore power inlet is installed, ABYC recommends that the neutrals are, For a single shore power installation with multiple inlets, all current carrying conductors shall be. When testing a wet-cell battery with a hydrometer, what reading indicates a fully charged battery? T or F: The "L" shaped prong on a 20 amp shore power cord is the black or "hot" wire. From the choices provided which device would typically not be fed from an inverter's AC output? When completing a job after a partial rewiring of a customer's boat, the technician should: Using the circular mills formula, what size wire would you need for a green, 96 watt running light that is 16' away from the distribution panel in a 24 volt vessel. When combining batteries in DC installation, which statement is NOT true. What is the minimal wire size required for a battery charger case connection to DC ground/engine negative? T or F: most GFCI outlets can be used in a gasoline engine room. For proper inverter operation it is important to do all of the following except. T or F: Boats that have an inverter installed must have a warning label noting such at the main electrical panel. Marine engineering involves the design, construction, installation, and operation of systems and equipment that helps to move and control vessels. 1500 Watts / 20 A circuit (E-11.8.2.2.1.2). When installing a starter over current protection must be within inches of the battery. When grounding an electrical propulsion system you should always remember too... c. Checking voltage drop when engaging starter motor (Calder p. 78). What is an ELCI and where is it required to be installed? When calculating AC loads, what is the recommended wattage per square foot of living area? The maximum allowable voltage drop permitted for panelboard DC feeders based on ABYC is: Which of the following battery has the largest case or physical size of the battery case? T or F: A shunt is a conductor of known resistance placed in series with a circuit to indicate current flow by measurement of the voltage drop across this conductor. Which of the foillowing is the most probably cause? 16 ga. (see E-11.14.1.1.2 note: some 18 AWG exceptions exist), For AC circuits, ABYC recommends that minimum conductor size shall be at least. C. Excessive voltage drop across the remote starter switch. With 12.6 volts, how many amps is the inverter drawing from the battery bank? When using a high-resolution amp clamp on a shore power cord and activating AC circuits one by one, the technician notes that the AC leakage current measured increases with each appliance. Mission: The role of the American Boat & Yacht Council (ABYC) is to be the essential source of technical information for the international marine industry. Responding to a mid-50s boom in recreational boating, the American Boat & Yacht Council was formed by members of the Motorboat and Yacht Advisory Panel of the U.S. Coast Guard's Merchant Marine Council. The A says the a faulty circuit breaker could require an overhaul. Must be protected with dielectric insulating material. Tech A says AC & DC are able to run down the same conductor. The most common electrical circuit problem in marine applications is: The primary by-product of excessive electrical resistance is: What is the preferred tool for tracing shorted and open circuits? T or F: A visible means [voltmeter, light, etc] of determining an inverter is "online or in standby mode" must be installed at the main AC electrical distribution panel. Which of the following statements is NOT TRUE: b. between the hull inlet connector and the grounding wire inside the boat, The recommended circuit location to install a galvanic isolator is between the. 613 Third Street, Suite 10 - Annapolis, MD 21403 - Phone: 410.990.4460 - Fax: 410.990.4466 When troubleshooting a charging problem with a voltage regulator, a technician should find the brown wire: c. 2-450 CCA batteries in parallel (see E-11.6.1.2.1). How much current does it use: At the AC distribution panels on boats the green and white wires... Overheating at a junction point in the AC distribution panel can be caused by all of the following EXCEPT. T or F: Pigtails less than 7 inches (175mm) in length are exempt from overcurrent protection requirements. Under certain circumstances, ABYC requires that a metallic shorepower Inlet receptacle be insulated from the hull. What is the largest guage wire that may be connected to a bettery with wing-nuts? All of the following could cause a conductor to overheat except. False. T or F: CO detectors will also detect smoke in most situations. b. DC grounded conductors on new boats that are also equipped with AC systems should use what color insulated wire? In addition to writing uniform technical standards for the entire marine industry, ABYC has become a leader in education for marine industry professionals, technicians and boat owners by offering seminars, workshops, webinars, marine technician certification training and standards accreditation as well as numerous educational publications. The customer reports that the generator will not crank from either the local or remote control panel. All terminations and junctions for AC conductors must be installed: Wha is the best tool to use for locating short-circuits? The National Marine Electronics Association (NMEA) Basic Marine Electronics Installer Program (MEI): This is a program that will serve as an entry point to secure a basic-level job on a boat, yacht, or ship. Many employers look for candidates with a Marine Electrical Certification from the American Boat and Yacht Council. Technician B says simultaneous opening fuses may be used for this application. Using the ABYC voltage drop table, what size wire is needed? Which of the following metals may exhibit two distinct corrosion potentials (and occupy two different positions on the galvanic scale) depending on the composition of the electrolyte, other environmental factors, and/or surface conditions of the metal itself? On a brushless generator, a possible cause for low AC voltage output under load could be: Tech A says the ABYC has pull-test requirement for wiring connecting the generator to onboard circuits. T or F: Running AC and DC conductors together is allowed so long as the AC conductors are sheathed. Define: Battery reserve capacity = the number of minutes that a new, fully charged battery at ______ degrees F can be continuously discharged at ______ amps while maintaining _____ volts (for a 12 v battery). The career path to become a marine electrician can differ depending on where you live, though you typically need to have both practical experience and some type of certification. Which of the following is the function of a galvanic isolator? Multi wire plugs and receptacles used in conjunction with harness type wiring systems shall incorporate means except: What is the allowable amps of a single #2 AWG conductor outside the engine space, rated at 105 C? To check an inverters _________ a technician may need a true RMS meter: Inverter output neutral shall be disconnected from ground at the inverter when: An inverter or inverter charger must be installed at least ______ feet above normal accumulation of bilge water, or protected from bilge water splash. The same training would be offered in the first classes of a radar technician so it's possible that some classes could count towards more than one certification. A system voltmeter shall be installed on the main panelboard if the system is permanently connected to. Technicians troubleshoot, diagnose, repair and maintain electrical components, parts and equipment. A 120V hot water heater is rated at 1750 watts. How often (in inches) shall wire bundles be supported? When testing a battery, the hydrometer is used to test. A. AC grounding conductors connect metallic non-current carrying parts of the electrical equipment to which other part? For 20-amp circuit? The total impedance of polarity indicating and protection devices connected between normal current carrying conductors and the grounding conductor (green wire) shall be: T or F: An acceptable way to check for loss of ground in an AC circuit is to plug a light bulb into a receptacle's hot and ground. Overcurrent protection must be located withing 7 inches of the power source unless contained within a sheath, in which case it may be up to 40 inches away. To test a 120VAC element in a water heater the technician may run a test. T or F: it is ok to mount a battery switch inside an engine room, because ABYC startes that it must be located as close to the batteries as practical. If installed in a head, galley, machinery space, or on a weather deck, a receptacle shall be protected by. Define: Cold Cranking Amps = the discharge load, in amperes, that a new, fully-charged battery at _____ degrees F can deliver for ______ seconds while maintaining a voltage of _____ volts (for a 12 v battery). âhave an ABYC Certified Electrician investigate and resolve, as requiredâ. ABYC's over 4,000 members include boat builders, boat yards, yacht brokers, marinas, service technicians, surveyors, retail marine stores, marine insurance companies, equipment manufacturers and boat owners. Students should have an understanding of basic electrical theory. In case of an internal short to the case, the AC grounding wire would not carry enough current. 1f an inverter also serves as a battery charger it shall also meet the requirements of: Which of the following is not a correct installation practice for an inverter installation? Who is correct? T or F: when installing a remote solenoid for switching high-current draws like windlass, bow-thruster, etc, a separate appropriately sized overcurrent protection must be in place for both the low-current and high-current wiring of the solenoid. According to the ABYC, the shore-power grounded conductor should: If a customer complains about receiving shocks from her boat when shore power is active, the technican should first test: B. Technician B says that backfeeding is caused by DC reversed polarity. What tensile force must a 10 Gauge crimp connector withstand for one minute? What ampacity is required for wire and terminals connecting a galvanic islolator? A technician is checking a shore power cord with a clamp on AC current meter. Note: many voltage regulators have integral blocking diodes. Copyright © 2020 EduMaritime - All Rights Reserved, Intl Trade / Trade Finance Online Courses (ICC), ABYC Recreational Boat Certification Designations & Technical Education and Technician Certification in U.S. & Canada, IAMPE Intl Assn of Maritime & Port Executives, The Institutes - Marine Insurance Certifications, Basic Marine Electrical and Corrosion Mitigation, Basic Marine Electrical and Corrosion Mitigation (Complete Course), National Electric Code - An In-Depth Study of the New 2017 Marina Electrical Codes, Outboard Engine Repowering Considerations, Advanced Electronic Engine Troubleshooting - Webinar, Troubleshooting Dock Wiring & Finding AC Ground Faults. What is the minimum voltage rating for all DC conductors? T or F: Generators that are "self-limiting" do not require overcurrent protection if the conductors used are of sufficient ampacity and sized for maximum current available. A polarity indicator light that is glowing more dimly than normal could be an indicator of: D. A neutral-to-gound link at the boats AC panel board. Faulty exciter winding / diode rectifier circuit. What guage cable should be used (minimum)? Most of the sulfuric acid has been absorbed into the lead plates, leaving mostly water in the electrolyte. These apply to welding consumables, propulsion engine components, electrical and automation systems, lifting appliances, navigation and fire safety equipment, and many additional⦠What is the minimum insulation temperature rating for conductors routed inside an engine room? Which is the primary function on an inverter? (Note: some residential breakers are not trip free). To test a 120V AC element in a hot water heater, the tech may run a _____ test. Tech B says that such panel boards should be grounded to the AC grounding bus. In a series circuit, the more resistive loads you add: The maximum number of terminals to be attached to any one terminal stud based on ABYC Standard is: c. The breaker will trip out regardless of conditions. Whether for any wet environment or temporary submerged, KDM Marine Enclosures protect switches, control systems, cables, electronic and other electrical ⦠It also provides an overview of ABYC along with certification requirements and helpful hints to manage your certification. After installing an alternator, a technician should: When installing a wind generator, the technician must consider all of the following except: When testing an alternator, the maximum AC ripple reading to ensure minimal RFI interference should be: You have a customer with an 800 Ah 'house' battery bank who wants to recharge with the biggest amount of amperage he can. What is the smallest guage wire allowed for unsheathed wire runs through the boat? Fire hazard. DC grounded conductors on new boats that are also equipped with AC systems should use what color of insulation? Marine Electrical Certification: This certification is geared toward marine electricians with broad experience in both troubleshooting and equipment installations, both AC and DC. MEP manufactures components for several brands including: Alumacraft, Ariens , Crestliner, G-3, Husqvarna, Landau, Lowe, Lund, Merritt Equipment, Misty Harbor, Triton, White River Marine Group, and about 50 more When testing a wet-cell battery with a hydrometer, what threshold is used to determine a bad cell? Topics include AC power from shore and generators, battery systems, panel boards, cable installation, safety equipment, and troubleshooting tips. Describe the reason why a locked-rotor motor may not trip an overcurrent protection device. In addition to an electrical certification review, geared toward experienced marine electrical technicians, the ABYC offers a number of online courses and certification programs. Closed when in neutral (therefore, an open-circuit failure would prevent engine starting). Define: Marine Cranking Amps = the discharge load, in amperes, that a new, fully-charged battery at _____ degrees F can deliver for ______ seconds while maintaining a voltage of _____ volts (for a 12 v battery). AIC = 2X mnfg's short-circuit rating or 100X nominal Ahr rating. As the motor heats up, winding resistance increases causing a corresponding decrease in current draw. Resetting mechanism cannot overrid over current interrupting mechanism. Check the voltage at the dock pedestal. Which AC equipment should not run & will be damaged from a 'square' or 'modified' wave inverter. Make sure the field wire has appropriate voltage when engine is running. c. When connected in series AmpHrs is increased. Name the 4 places in marine electrical power where we have a neutral-ground connection. A customer complains that her generator will start from the local control panel at the generator, but not from the remote control panel at the helm. 600 Watts for 15-amp circuit, 1000 Watts for 20-amp circuit (E-11.13.3.4). Technician A says the AC system wiring must include a voltmeter installed on the main panelboard if the system wiring is permanently connected to a genset. A 2000 watt inverter is operating at 50% capacity with a 90% effeciency rating. 8 amps (E-11 Table XII Conductor Ampacity - Flexible Cords), maximum current carrying capacity for an flexible cord of 16 AWG with 2 current carrying conductors inside the engine spaces is, A diode is a semiconductor that passes current, Allowable amperage for AC conductors of 14 AWG, 105 degree C insulation, outside the engine spaces, when 2 current carrying. Technician A says that the batteries must be in a vented box and secure. T or F: if no standard rating OC protection device is available which equals 100% of the allowable current for the conductor being protected, the next larger rating, up to 150% of the conductor ampacity, may bee used - unless the load is a motor. Allowable amps less than 50 volts (not bundled). Which ABYC standard refers to the fuse in the DC positive conductor for inverter/battery charger output protection? You're installing a 500 GPH bilge pump to be used as a shower pump (just to drain the shower grey-water). Technician A says gensets must have an independent self-priming pump for the cooling system. With a battery voltage of 12.6 volts how many amps is the inverter drawing from the battery bank? False. "Readily accessible" defines entry into the engine room in an emergency as dangerous - use a remote battery switch. When can a flat washer be used on a battery terminal? T or F: Branch circuit breakers may open only the ungrounded conductor if the AC system on the boat is equipped with a reverse polarity indicator or input circuit isolation transformer. According to ABYC, what is the minimum battery reserve capacity? Who is correct? An adequate sized under-water lightning ground plate will have an area of at least: Tech A says that lightening protection must not have a bend over 90. This is a certification course. When measuring temperature to determine potential electrical issues involving excessive connector resistance, what is the threshold for concern? B. What should you do first? Why do battery chargers require a separate case connection to main AC grounding bus and Engine negative / DC grounding bus? Anode is negative, Cathode is positive. Which technician is correct? The ABYC offers a specific certification for marine electrical workers. The meter is reading 1.6 amps. Voltage drop could be used to test for a bad starter cable. What does this number represent? Which is correct? If there is not a standard current rating overcurrent protection device equal to 100% of the allowable current for an AC branch circuit, the next larger standard current rating may be used provided it does not exceed _______ of the maximum allowable current . This most likely indicates: A system voltmeter shall be installed on the main panel board if the system is permanently connected to: Two techs are rewiring an old sailboat. The tool of choice for testing AC generator winding insulation integrity is a: Technician A says that a generator's neutral and ground must be connected together at the generator. The boat has a 12-volt system and the distance form the panel to the batteries is 15 ft. Shore power neutral is tied to ground on the shore side. A light circuit uses a 12 volt battery to power a bulb which uses 2.5 amps of power. b. A sine wave for "Shore Power" AC has an RMS value of 120 volts. A branch circuit for DC power can have overcurrent protection not to exceed _____ of conductor ampacity. Batteries must be secured to prevent movement of more than ______ inches in any direction when a pulling force of _____ or _____, whichever is less, is applied through the center of gravity of the battery for how long? T or F: On an AC and DC combined panel that it affixed with screws, the energized AC parts on the back of the panel must be covered. What tool is used to test the insulation integrity of a generator windings and what is the generally accepted Mimimal measurement? If the power source is a battery and the conductors are sheathed, OC may be up to 72 inches away. Marines will be paid based on rank and will receive benefits. JTB Marine is proud to be certified by the American Boat and Yacht Council (ABYC) as both a Marine Electrical Technician and as a Marine Corrosion Technician. d. When installed immediately under a split lock washer and nut. T or F: When more than one option for shore power inlet is installed on a boat, the shore power neutrals shall be tied together on the boat. What size circuit breaker would you use? What is the minimum ampere interrupting capacity (AIC) for main overcurrent protection on a battery bank rated at 12 V, 1500 CCA? ABYC is on the leading edge of the movement toward greater reliance upon standards that improve boating safety for the recreational boating community. Marine electrician training programs are typically offered by schools of seamanship and specialized trade schools. A marine technology apprenticeship will enable you to learn about restoring electrical systems onboard ships while ensuring worksite safety. Which type of battery generally recharges faster? It is sometimes possible to attend a trade school or work as an apprentice prior to starting this type of career, though military electricians and engineers are often qualified to take certification exams as well. ABYC certification is considered the highest level of industry certification available in the United States. BENEFITS OF ATTENDING. (T or F) Impedance can be defined as the total resistance flow in a D.C. system. Which Schools Offer Online Courses In Marine Technology? Technician A says this is NOT a valid test because the incoming and outgoing AC electricity cancels each other out - you need to check individual wires, not around an entire cord. An overheated shore power connector problem could be caused by all of the following EXCEPT, If a customer complains about receiving shocks from his/her boat when the boat is plugged into shore power, the first test should be a, c. 125 (see E-11.10.2.5.1.1 and E-11.10.2.5.2), The maximum allowable overcurrent protection rating for either the primary or secondary side of an isolation transformer is _____ %, a. When multiple DC conductors are bundled together for a distance of greater than ____ inches, the allowable ampacity of each conductor must be derated based on the table found within standard E-11, T or F: The AC grounding conductor shall be permitted to be one size smaller than the current carrying conductors on circuits rated greater than 30 Amps. What material is recommended for clamping conductors over engines and moving machinery according to ABYC. There could be severe radio interference from the new device. We offer free estimates, & are licensed and insured. Two technicians are discussing increasing the number of traditional lead-acid golf cart batteries on a customer's vessel from 4 to 8. Which is correct? Thermal protection device recommended in motors! b. If a customer complains of low voltage at the AC Panel while at the dock, the technician should first, Technician A says overcurrent protection for the main shore power feeders must be with 7" of the source of power (the hull. Technician B says that they must be kept separate. 800 CCA or 100 Ahr (exceptions: electronic equipment with battery backed memories; safety equipment such as bilge pumps, alarms, CO detectors, bilge blowers; battery chargers; I'm pressed current systems. Technician B says a voltmeter must be installed if the genset is connected to any permanently installed motor or inverter circuit. Marine electricians who are employed aboard vessels at sea will have to qualify for a TWIC (Transportation Workers Identification Card) or STCW (Standards of Training, Certification, and Watchkeeping) rating, depending on the size of the vessel and their particular role. the battery charger case shall be tied to the engine negative terminal/bus, along with the negative output terminal of the battery charger, not at the battery charger case itself.. T or F: A battery charger case shall be tied to the DC negative output terminal at the battery charger. A pigtail is defined as: in a parallel circuit, the more resistive loads you add: Strain relief shall be provided for all wiring passing through the battery charger case to relieve strain on terminals, splices or. These marks are seen commonly on appliances and computer equipment, furnaces and heaters, fuses, electrical panel boards, smoke and carbon monoxide alarms, fire extinguishers and sprinkler systems, personal flotation devices, bullet resistant glass, and thousands of other products. He or she may also handle emergency repairs on ships in port, in dry dock, and out at sea. The maximum sustained charging voltage acceptable to some gell cell battery manufacturers is: 0.050 points of specific gravity below other cells = bad cell. A panelboard or switchboard with no sub-main circuit breaker or fuse shall have installed, at the source of power, overcurrent protection not to exceed _______ of the load capacity of that panel, or the current carrying capacity of the feeders. T or F: An anode can be defined as an electrode of a supplied-current cell which is connected to the positive terminal of a DC current source . A successful customer experience includes: In the formula for circular mils, for our purposes "K" is equal to 10.75. Reviews of this position are positive, with most Marines recommending the position for the skil⦠Technician B says this is a dangerous situation and AC may be present in the water - immediate attention to the problem is required. A fully charged 12 volt battery, after a period of rest during which nothing has been put in or taken out, should have a fully charged voltage of: T or F: The metallic braid of a coaxial cable and metal conduit used for radio interference shall be connected to earth ground with an insulated stranded copper conductor. Technician A says generator output loads should be balanced between legs. Tech B says that the alternator output is proportional to the rotor voltage. Transfer from one AC power source circuit to another shall be made by a make before break type switch. What is the minimum ampere interrupting capacity (AIC) for main overcurrent protection on a battery bank rated at more than 2200 CCA or more than 500 Ahr? c. Crossover cranking stud connected to cranking motor, Genset DC wiring shall meet all of the following requirements except, b. shuts down for low voltage output condition. (see E-10.8.5). ABYC is the premier global standards organization in the marine industry and a leader in technical education and technician certification. How much current should flow through the DC grounding conductor in a 25 amp DC motor circuit. Who's right? Tech B says pull-test requirements are dictated by the generator manufacture. Marine Corps Engineer Equipment Electrical Systems Technician (MOS 1142) use electrical theory and concepts to make repairs on electrical systems. Tech B says this is technically impossible. Tech B, According to ABYC, maximum current carrying capacity of a 10 gauge wire, 105 degree C insulation, inside the engine room, What is the expected voltage across a 'closed' switch that is operating properly, Sheathed ungrounded conductors connected directly to a battery must have overcurrent protection devices located within. Batteries will feed back into solar array or wind generator coil and discharge (possibly damage). Technician B says it is allowable to go up to 150% over the current allowed in table VI A-C of E-11. Students will take the ABYC (American Boat and Yacht Council) certification exams for the relevant modules. What provision must be in place on any fuel line located within 12 inches of a battery terminals?