ABYC Marine Electrical Certification Exam Review
n n n n n
1. Every 18 inches.: How often (in inches) shall wire bundles be supported?
n n n n n n n n n n n
2. Insulated Metallic Hanger Clamps: What type of clamps are to be used forsu
n n n n n n n n n n n n n
pporting wire bundles when routed over engines and machinery?
n n n n n n n n
3. 40 lbs (E-
n n
11 Table XV): What tensile force must a 10 Gauge crimp connectorwithstand for o
n n n n n n n n n n n n n n
ne minute?
n
4. 36 inches: What is the max allowed unsupported cable length for battery cables?
n n n n n n n n n n n n
5. True: T or F: Running AC and DC conductors together is allowed so long as theAC
n n n n n n n n n n n n n n n n n
conductors are sheathed. n n
6. C. Unwanted open: The most common electrical circuit problem in marine appli-
n n n n n n n n n n n
cations is:
n n
A. Short circuits n
B. Too much continuity
n n
1n/n37
,C. Unwanted open n
D. Inter circuit Short n n
7. D. Heat: The primary by-product of excessive electrical resistance is:
n n n n n n n n n
A. Increased Amperage n
B. Increased Voltage n
C. Reduced Ambient Temperature n n
D. Heat
8. 1 HP = 746 Watts: One HP = how many watts?
n n n n n n n n n n
9. D.T DR (time-domain reflectometer): What is the preferred tool for tracing short-
n n n n n n n n n n n
ed and open circuits?
n n n n
A. Ohm meter n
B. Amp clamp n
C. Volt meter n
D. TDR (time-domain reflectometer)
n n
10. 0 AWG: A technician is installing a cable run from the batteries to the main DCpa
n n n n n n n n n n n n n n n n
nel board on a boat as part of a refit. The boat has a 12-
n n n n n n n n n n n n n n
2n/n37
,volt system and the distance form the panel to the batteries is 15 ft. The maximum curr
n n n n n n n n n n n n n n n n
ent draw from thepanel is calculated at 90 amps. What guage cable should be used (
n n n n n n n n n n n n n n n n
minimum)?
11. Yellow: DC grounded conductors on new boats that are also equipped with ACsy
n n n n n n n n n n n n n
stems should use what color insulated wire?
n n n n n n
12. 16 AWG: What is the smallest guage wire allowed for unsheathed wire runsthr
n n n n n n n n n n n n n
ough the boat? n n
13. False. Start batteries have a greater number of thinner plates within eachce
n n n n n n n n n n n n
ll.: T or F: Compared to deep cycle (house) batteries, cranking batteries will havethick
n n n n n n n n n n n n n n
er lead plates to facilitate the higher, short-duration current draws.
n n n n n n n n n
14. Cranking: Which type of battery generally recharges faster? Deep cycle orcr
n n n n n n n n n n n
anking?
3n/n37
, 15. Wire brush and backing soda.: What tool and common household staple areus
n n n n n n n n n n n n
ed to clean battery terminals?
n n n n
16. Most of the sulfuric acid has been absorbed into the lead plates, leaving m
n n n n n n n n n n n n n
ostly water in the electrolyte.: Why might a fully-discharged wet-
n n n n n n n n n
cell type battery freeze?
n n n
17. 1 inch, 90 lbs or 2x the battery weight, for 1 minute in each direction.: -
n n n n n n n n n n n n n n n
n Batteries must be secured to prevent movement of more than
n n n n n n n n n
inches in any direction when a pulling force of
n n n n n n n n or
, whichever is less, is appliedthrough the center of gravity of the battery for how lo
n n n n n n n n n n n n n n n n
ng?
18. True: T or F: it is ok to install batteries directly below an uninterrupted fuel line?
n n n n n n n n n n n n n n n
19. Must be protected with dielectric insulating material: What provision mustb
n n n n n n n n n n
e in place on any fuel line located within 12 inches of a battery terminals?
n n n n n n n n n n n n n n
20. 80 F, 25 Amps, 10.5 Volts: Define: Battery reserve capacity = the number of min
n n n n n n n n n n n n n n
utes that a new, fully charged battery at
n n n n n n n degrees F can be continuously n n n n
4n/n37
n n n n n
1. Every 18 inches.: How often (in inches) shall wire bundles be supported?
n n n n n n n n n n n
2. Insulated Metallic Hanger Clamps: What type of clamps are to be used forsu
n n n n n n n n n n n n n
pporting wire bundles when routed over engines and machinery?
n n n n n n n n
3. 40 lbs (E-
n n
11 Table XV): What tensile force must a 10 Gauge crimp connectorwithstand for o
n n n n n n n n n n n n n n
ne minute?
n
4. 36 inches: What is the max allowed unsupported cable length for battery cables?
n n n n n n n n n n n n
5. True: T or F: Running AC and DC conductors together is allowed so long as theAC
n n n n n n n n n n n n n n n n n
conductors are sheathed. n n
6. C. Unwanted open: The most common electrical circuit problem in marine appli-
n n n n n n n n n n n
cations is:
n n
A. Short circuits n
B. Too much continuity
n n
1n/n37
,C. Unwanted open n
D. Inter circuit Short n n
7. D. Heat: The primary by-product of excessive electrical resistance is:
n n n n n n n n n
A. Increased Amperage n
B. Increased Voltage n
C. Reduced Ambient Temperature n n
D. Heat
8. 1 HP = 746 Watts: One HP = how many watts?
n n n n n n n n n n
9. D.T DR (time-domain reflectometer): What is the preferred tool for tracing short-
n n n n n n n n n n n
ed and open circuits?
n n n n
A. Ohm meter n
B. Amp clamp n
C. Volt meter n
D. TDR (time-domain reflectometer)
n n
10. 0 AWG: A technician is installing a cable run from the batteries to the main DCpa
n n n n n n n n n n n n n n n n
nel board on a boat as part of a refit. The boat has a 12-
n n n n n n n n n n n n n n
2n/n37
,volt system and the distance form the panel to the batteries is 15 ft. The maximum curr
n n n n n n n n n n n n n n n n
ent draw from thepanel is calculated at 90 amps. What guage cable should be used (
n n n n n n n n n n n n n n n n
minimum)?
11. Yellow: DC grounded conductors on new boats that are also equipped with ACsy
n n n n n n n n n n n n n
stems should use what color insulated wire?
n n n n n n
12. 16 AWG: What is the smallest guage wire allowed for unsheathed wire runsthr
n n n n n n n n n n n n n
ough the boat? n n
13. False. Start batteries have a greater number of thinner plates within eachce
n n n n n n n n n n n n
ll.: T or F: Compared to deep cycle (house) batteries, cranking batteries will havethick
n n n n n n n n n n n n n n
er lead plates to facilitate the higher, short-duration current draws.
n n n n n n n n n
14. Cranking: Which type of battery generally recharges faster? Deep cycle orcr
n n n n n n n n n n n
anking?
3n/n37
, 15. Wire brush and backing soda.: What tool and common household staple areus
n n n n n n n n n n n n
ed to clean battery terminals?
n n n n
16. Most of the sulfuric acid has been absorbed into the lead plates, leaving m
n n n n n n n n n n n n n
ostly water in the electrolyte.: Why might a fully-discharged wet-
n n n n n n n n n
cell type battery freeze?
n n n
17. 1 inch, 90 lbs or 2x the battery weight, for 1 minute in each direction.: -
n n n n n n n n n n n n n n n
n Batteries must be secured to prevent movement of more than
n n n n n n n n n
inches in any direction when a pulling force of
n n n n n n n n or
, whichever is less, is appliedthrough the center of gravity of the battery for how lo
n n n n n n n n n n n n n n n n
ng?
18. True: T or F: it is ok to install batteries directly below an uninterrupted fuel line?
n n n n n n n n n n n n n n n
19. Must be protected with dielectric insulating material: What provision mustb
n n n n n n n n n n
e in place on any fuel line located within 12 inches of a battery terminals?
n n n n n n n n n n n n n n
20. 80 F, 25 Amps, 10.5 Volts: Define: Battery reserve capacity = the number of min
n n n n n n n n n n n n n n
utes that a new, fully charged battery at
n n n n n n n degrees F can be continuously n n n n
4n/n37
