Wire Size Comparison MEl ec- Ch 2 - 2 #16 top to #10 bottom #2
top to #10 bottom
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Copper Wire Characteristics MEl ec- Ch 2 - 3
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12 VDC Wire Size Selection MEl ec- Ch 2 - 4
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120 VAC Wire Size Selection MEl ec- Ch 2 - 5
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Types of Electrical Wire
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Multi Stranded Power Wire. High Wattage Needs Greater surface
area.
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Wire Terminations Crimping Special Tool Approved Marine
Connectors Use of Ratcheting Tool Solder Heat-shrink Tubing MEl ec-
Ch 2 - 14
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Wire Terminals MEl ec- Ch 2 - 15
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Ratcheting Crimper MElec-Ch2 - 16 YES NO
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Ratcheting Tool Use First select appropriate connector Strip
insulation length of stem plus 1/16 Insert stripped end all way
into terminal End should extend 1/16 Place terminal in same color
slot First crimp end of terminal barrel nearest ring Then crimp
wire end of terminal barrel Check the connection with a solid tug
MEl ec- Ch 2 - 17
Slide 18
Soldering Terminal connection cant be only soldered Must also
be crimped Soldering is normally not required Crimped connectors
are acceptable to ABYC If solder, apply only to ring end of
terminal Solder changes stranded wire into solid Stranded wire is
flexible Use 40% lead / 60% tin, rosin core solder Battery lugs may
be only soldered MEl ec- Ch 2 - 18
Wiring Diagram Symbols MEl ec- Ch 2 - 20 Switch, double pole,
single throw (DPST) Switch, single pole, single throw (SPST)
Switch, single pole, double throw (SPDT) Battery (long line on top
is positive) Wires connected (at dots) Wires crossing (but NOT
connected) Wire (insulated, metal conductor) Incandescent Light
Alternate symbol for Light Circuit Breaker Fuse Ground Male
Connector Female Connector