IYRS Electrical ABYC 2024 Exam Questions With Answers

IYRS Electrical ABYC 2024 Exam Questions With Answers The minimum amp circuit breaker that should be used to protect a 120V water heater circuit with a 1600-watt element would be rated at ________ amps - ANSWER 15 When testing for excessive EMF emission near a conductor or appliance, the tool of choice is a - ANSWER Gauss Meter The primary problem with using a series circuit to supply multiple loads is that - ANSWER voltage drop across each load will be excessive the most common electrical circuit problem in marine applications is - ANSWER unwanted open the primary by-product of excessive electrical resistance is - ANSWER heat the tool of choice today for tracing shorted and open circuits is the: - ANSWER TDR What material is recommended for clamping conductors over engines and moving machinery according to the ABYC - ANSWER Metal according to ABYC acceptable minimum clearance for routing wire near a dry exhaust section is - ANSWER 9 inches (225 mm) The maximum number of terminals allowed to be attached to any one terminal stud based on ABYC is - ANSWER 4 How much current should flow through the DC grounding conductor in a 25-amp DC motor circuit - ANSWER 0 amps conductors of #10 AWG and larger shall be permitted to be connected in parallel ______ - ANSWER Where the ampacity of each individual conductor is sufficient to carry the entire load current shared by the parallel conductors A technician is installing the cable run from the batteries to the main DC panelboard on a boat aspart of a refit. The boat has a 12-volt system, and the distance from the panel to the batteries is 15 ft (approximately 3 m).The maximum current draw from the panel is calculated at 90 amps.What gauge cable should be used at a minimum to maintain Standards compliance? - ANSWER 0 AWG 8. DC grounded conductors on new boats that are also equipped with AC systems should use _________ insulation. - ANSWER yellow the maximum spacing for cable run support based on ABYC is - ANSWER 16 inches (400 mm) the smallest gauge cable allowed for unsheathed wire runs through the boat is - ANSWER 16 AWG The maximum sustained charging voltage acceptable to some gel cell battery manufacturers is - ANSWER 14.1 Sheathed, ungrounded conductors connected directly to a battery must have overcurrent protection devices located within _______ of connection to the battery - ANSWER 40 Inches on a battery where a hydrometer can be used, a cell reading of 0.050 points of a specific gravity below all of the other cells in the battery may indicate - ANSWER A bad cell and battery replacement needed some battery manufacturers will only consider replacement on batteries whose condition has been determined by use of a - ANSWER conductance tester Tech A says that sealed batteries can be mounted anywhere in the boat where space can be found.TechBsays that consideration should be given to ventilation and the mounting surfaces and the surrounding area near the battery, and their resistance to acid attack.Which technician is correct? - ANSWER tech B Minimum battery reserve capacity allowed based on ABYC standards is - ANSWER 90 Minutes Based on ABYC standards, cable attachment to batteries with wing type nuts is allowed as long as the wire gauge does not exceed - ANSWER 8 AWG Traditional battery load testing methods dictate that a load equivalent to _____ % of the battery's CCA rating be placed on the battery - ANSWER 100