Marine Electrical Systems
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PETER KENNEDY YACHT SERVICES Marine Electrical Systems |
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Standards, Tables, International Equivalents
ABYC Standards
The American Boat and Yacht Council is an industry
based body which publishes a set of voluntary standards for all aspects of boat
design and construction. The "Standards and Recommended Practices for
Small Craft" is the industry bible for surveyors, boat builders and
repairers. ABYC also also offers certification for professionals working
in various fields. Technical questions from boat owners as well as from
professionals are welcomed at the ABYC offices. Individual
standards are available for purchase online for $60 each. Recommended
for Electrical Systems is E.11 AC &
DC ELECTRICAL SYSTEMS ON BOATS
www.abycinc.org
American Boat and Yacht Council
613 Third Street, Suite 10
Annapolis, MD 21403
Phone: (410) 990-4460
Fax: (410) 990-4466
US Coastguard
Standards
Coastguard standards are available free online. Here
are some of the main sections . However, because they are lengthy I recommend
the ABYC digests of the various standards. The
Electrical compliance guideline is available for $25 from the ABYC
46 CFR 111 Electric systems--general requirements
46 CFR 112 Emergency lighting and power systems
46 CFR 113 Communication and alarm systems and equipment
46 CFR 120 Electrical installation (Subchapter K, small passenger vessels)
46 CFR 129 Electrical installations (Subchapter L, offshore supply vessels)
46 CFR 161 Electrical Equipment (Subchapter Q, Items requiring Coast Guard Approval)
46 CFR 183 Electrical installation (Subchapter T, small passenger vessels)
33 CFR 183 Boat and Associated Equipment (recreational boats)
UL
Standards
UL marine
standard.
Wire Size and Color
Allowable Amperage in Conductors - Wire Sizing Chart
Voltage Drop in Conductor - Wire Sizing Chart
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AC wiring color codes |
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| Conductor | US 115v AC | US 230v AC | Europe 240v AC |
| Ground | Green | Green | Green and yellow |
| Neutral | White | White | Light blue |
| Hot | Black | Black | Brown |
| Hot | Red | ||
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Allowable Amperage of conductors for systems under 50 volts |
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Conductor size AWG |
Outside Engine Spaces |
Inside Engine Spaces |
| 18 | 20 | 17.0 |
| 16 | 25 | 21.3 |
| 14 | 35 | 29.8 |
| 12 | 45 | 38.3 |
| 10 | 60 | 51.0 |
| 8 | 80 | 68.0 |
| 6 | 120 | 102 |
| 4 | 160 | 136 |
| 2 | 210 | 178 |
| 1 | 245 | 208 |
| 1/0 | 285 | 242 |
| 2/0 | 330 | 280 |
| 3/0 | 385 | 327 |
| 4/0 | 445 | 378 |
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ENGINE AND ACCESSORY WIRING COLOR CODE from ABYC E11 Table XV |
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COLOR |
ITEM |
USE |
| Order these wires online. | ||
| Yellow w/red stripe (YR) | Starting circuit | Starting switch to solenoid |
| Brown/yellow
stripe (BY) or Yellow (Y) - see note |
Bilge blowers | Fuse or switch to blowers |
| Dark gray (Gy) | Navigation
lights Tachometer |
Fuse or switch
to lights Tachometer sender to gauge |
| Brown (Br) | Generator
armature Alternator charge light Pumps |
Generator
armature to regulator Generator Terminal/alternator Auxiliary terminal to light to regulator Fuse or switch to pumps |
| Orange (O) | Accessory feed | Ammeter to
alternator or generator output and accessory fuses or switches. Distribution panel to accessory switch |
| Purple (Pu) | Ignition Instrument feed |
Ignition
switch to coil and electrical instruments. Distribution panel to electric instruments |
| Dark blue | Cabin and instrument lights | Fuse or switch to lights |
| Light blue (Lt Bl) | Oil pressure | Oil pressure sender to gauge |
| Tan | Water temperature | Water temperature sender to gauge |
| Pink (Pk) | Fuel gauge | Fuel gauge sender to gauge |
| Green/stripe
(G/x) (Except G/Y) |
Tilt down
and/or trim in Tilt and/or trim circuits |
Tilt and/or trim circuits |
| Blue/stripe (Bl/x) | Tilt up and/or
trim out Tilt and/or trim circuits |
Tilt and/or trim circuits |
| Order these wires online. | ||
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Peter Kennedy Yacht Services Located in Annapolis MD
USA we are open
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