Sea Ray 290 Sundancer Owner's Manual download pdf (Page 88)

6.14

SECTION 6 • ELECTRICAL SYSTEM

290 Sundancer

A. INTERNATIONAL RECEPTACLE

If equipped, all readily accessible 220V outlets are

protected by a Residual Current Circuit Breaker

(RCCB). This current breaker includes a test switch

to verify proper operation. Its function is similar, but

not identical to the 120V GFI.

REFER TO OWNER’S MANUAL PACKET FOR

INSTRUCTIONS AND WARRANTY INFORMATION.

RCCB OUTLET

(FIG. 6.14.1)

The GFI receptacle does not protect against short

circuits or overloads. This is the function of the

circuit breaker.

15. ELECTROLYTIC CORROSION AND

INC ANODES

Electrolytic corrosion of metals on power boats

can result in rapid and serious deterioration of

metal parts. You must set a regular schedule and

look for the possibility of electrolytic corrosion

(the deterioration of metals due to dissimilar

characteristics when placed in salt water). It is

your responsibility to check for and replace parts

damaged due to electrolytic corrosion.

To minimize electrolytic corrosion of the metals on

your boat, zinc anode plates are provided on your

boat to protect underwater hardware. Zinc, being

much less "noble" than the copper-based alloys

and aluminum used in underwater fittings, will

deteriorate ﬁ rst and protect the other metals.

Stern drives are ﬁ tted with zinc anodes on their

lower units (refer to your Engine Owner's Manual

for their locations). If your boat is equipped with

trim tabs, zinc plates are installed on each of the

trim tabs.

Zinc anodes require replacement about every six

months, if the boat is operated in salt water. In

fresh water, the zinc anodes can be replaced about

once a year.

If the anodes deteriorate more rapidly than this,

there is probably a stray current problem within the

boat or at the slip or mooring.

If the anodes do not deteriorate, they are not

protecting the other metallic parts of your boat. This

can be caused by loose anodes or by low grade zinc

or by not having a solid electrical contact between

the anode and the metal it contacts, or by paint on

the anodes.

If the anodes are deteriorating rapidly, or not at all,

contact your dealer.

When an AC shore power system is connected to

the boat, the underwater metal ﬁ ttings will, in effect,

be connected through the water to grounded metals

ashore. This results in the zincs being consumed

at a faster rate unless the marina maintains a

protective system to prevent this. When the marina

provides a zinc anode in the water bonded to the

metal outlet box on the dock, zinc loss on the boat

will be reduced. Do not connect this zinc to the

boat's ground system.

It is extremely important that all electrically-operated

DC equipment and accessories be wired so that

the ground polarity of each device is the same as

that of the battery. Your boat has a negative ground

system. The zinc anode is connected to every metal

item in the boat (fuel tanks, underwater gear, etc.)

via the green bonding wire.

Galvanic Isolator: Electrolytic corrosion can also

be caused by "stray currents" due to a fault in an

electrical item, even though correctly grounded. A

galvanic current isolator (zinc saver) is standard

on all Sea Ray

boats. It is installed be tween the

shore power ground and the boats' AC ground ing

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Sea Ray 290 Sundancer Owner's Manual Page 88

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