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Shore Power Adapters / 15 & 20 Amp Shore Power
Ground Fault (GFCI)
Interrupter Duplex Outlet
Measures imbalances in AC
circuits and disrupts service when
electrocution danger exists. Sensitive
to current leaks of only 4-6mA. 15A
capacity. Fits standard 15A, three-
blade plugs. Installs in standard
outlet boxes. Install first in a series of
outlets to protect downstream outlets. Waterproof outlet cover is stainless steel.
blade with ground
Outlet: Plastic; Cover: Stainless Steel
15 Amp, 125 Volt
Straight Blade Components
High-grade, marine-quality and corrosion-resistant. 2-pole,
3-conductor, grounding devices. Five-year warranty.
A. Female Connector
MARCO# 5269CR ShWt .2
B. Male Plug
MARCO# 5266CR ShWt .1
C. Locking Male Plug
2-pole, 3-wire, grounding. Curved blade. Yellow nylon.
MARCO# 4721CR ShWt .2
D. Receptacle, Dual Outlets
MARCO# 5262CRR ShWt .3
20 Amp, 125 Volt Components
2-pole, 3-wire components. Yellow nylon. Five-year warranty.
Teak Dual Outlet Cover
Solid teak receptacle cover fits all standard dual
receptacle outlets. Two per pack. 5 1/16"H x 3 5/8"W.
SEATK# 60170 ShWt .5
Teak Blank Outlet Cover
Solid teak blank outlet cover for use in installing
telephone and TV connections. Two per pack.
5 1/16"H x 3 5/8"W.
SEATK# 60174 ShWt .1
ELCI/GFCI Electrical Shock Protection
This West Advisor will help you understand
Equipment Leakage Circuit
Ground Fault Circuit Interrupters (GFCI)
these protection devices can make your boat safer.
Potentially dangerous electrical conditions
There are two potential failures in a boat's electrical system that can put
people on or around the boat at risk of lethal electric shock. In a properly
functioning marine electrical system, the same amount of AC current flows in
the hot and neutral wires. However, if electricity "leaks" from this intended path
in these two wires to ground, this condition is called a ground fault.
A good example of this is an insulation failure in the wiring of an appliance.
In addition, a faulty ground can occur when the grounding path is broken
through a loose connection or broken wire. For instance, a shore power cord
ground wire may fail due to constant motion and stress. Faulty grounds can
be undetectable; a simple continuity test will not necessarily reveal a problem.
When these two conditions occur at the same time, the results may be tragic.
The combination of a ground fault and a faulty ground can result in metal
parts in the boat and under water becoming energized. In addition to the
hazard to people on the vessel, there is a larger danger to swimmers near
the boat. While people on board are likely to receive a shock from touching
energized metal parts, nearby swimmers could receive a paralyzing dose
of electricity and drown due to involuntary loss of muscle control. A Coast
Guard-sponsored study showed numerous instances of electrical leakage
causing drowning or potential drowning even though the shock did not
directly cause electrocution.
ELCIs, and the more familiar GFCIs, are part of a larger family of devices that
measure current flow in the hot and neutral wires and immediately switch the
electricity off if an imbalance of current flow is detected. ELCIs and GFCIs
that are also Residual current Circuit Breakers with Overcurrent Protection
(RCBO) provide overcurrent tripping protection characteristic of a normal
circuit breaker. See Enclosed ELCI Main Circuit Breaker Panels on page 527.
GFCIs are used as branch circuit ground fault protection
at the 5mA
threshold in potentially wet environments. GFCIs protect against flaws in
devices plugged into them, but offer no protection from the danger of a
failing hard-wired appliance, such as a water heater or cooktop. See Model
An ELCI provides whole-boat protection.
Installed within 10' of the shore
power inlet, as required in new boats, an ELCI provides 30mA ground fault
protection for the entire AC shore power system beyond the ELCI.
Electrical safety for swimmers
To protect your family from the danger of electric shock while swimming,
remember this simple bit of advice:
Do not swim in marinas or around docks that are equipped with shore
power or around boats that are plugged into shore power.
See our West
Advisor at westmarine.com for a more complete discussion including the
ABYC standards that apply. Thanks to Blue Sea Systems for the information
in this article.
B. 20A Locking Plug
MARCO# 205CRPN ShWt .1
A. 20A Locking Connector
MARCO# 205CRCN ShWt .4
E. Weatherproof Stainless Steel
Duplex Outlet Cover
MARCO# 7879CR ShWt .6
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