Electrical systems overhaul, AirCond retrofit

aboard "Havaiki"

a one-of-a-kind, steel-hulled, 59' LOA, 13' beam motor-sailor
designed by Myron Spaulding, of Oakland CA, built 1981

The Goal - Finish Line:

Remove all unused/obsolete ship's wiring, repair as req'd
utilize existing wiring where practical, rewire as necessary.
Reconfigure primary circuit (battery wiring) and install monitoring system
Relocate/consolidate house wiring and controls from helm console to cabin
Design & layout of new main breaker panel in galley area
DC w 24 breakers on TOP -- AC system w 8 breakers on bottom

Proposed layout:

and what it ended up looking like....

clik on pix to ENLARGE

While it's somewhat difficult using this media to show the extent of the work done on this particular job, these before and after photos will provide the viewer a pretty good idea on what was accomplished.

What you're looking at here on the right is our finished product, utilizing Blue Sea Systems breaker panels, who also sell an extensive Label set, a WestMarine Ultra Alarm (for high bilge water), Heart Link10 battery monitoring system, an existing Heart Inverter Remote Control for operation of the 2500watt Heart Inverter was incorporated into the layout, but they also make the Heart Link1000 Remote/Monitor combo, which might work out better for a limited-space situation.

As previously mentioned, existing wiring was used where practical, but a lot of it was replaced with Ancor Marine Grade Wire


The original electrical system layout had part of the system (aux/house functions) located here inside this cabinet, with the rest of it ('boat' functions) located at/inside the helm console - which initially may have been a good idea, but devolved into the typical rats nest - which is why the decision was made to relocate most of it here...


At this point, it's a good idea to get a look at The Before Views,
so you get a full appreciation of what this job really entailed...


As you can see, things are quite a bit improved....
with each function on it's own separate circuit breaker/switch,
all located at one panel, which allows the Skipper to ascertain the status of the system AT A GLANCE, with easy access to the backside for any future changes, additions or repairs.
On the lower-left of this shot, the Battery Main-Selector switch is visible at it's new, easy to get at AND monitor location

While the previous installation involved the use of 2 different switches - inside the cabinet, plus 1 in the engine room - the new configuration has just one. (plus an engine-battery disconnect). This allows a simple, quick'n'easy paralleling of the house and engine batteries if necessary. It's location also allows the operator of the vessel to ascertain
AT A GLANCE whether or not the banks are combined. In normal operation, this switch remains in the house(#2) position - it's only necessary to change it if the engine can't be cranked on it's own separately-connected&switched battery.

Also to be noted is the American Boat & Yacht Council (ABYC) recommended
Over Current Protection, something the previous system was dangerously deficient on.

and then on to the next phase:

Relocate genset to engine room, relocate and re-pipe reefer unit
then install 2 ducted AC units - 1 for the main cabin, 1 aft.



This was an 'interesting installation' - to be sure - especially considering where the AC units needed to be located, never mind the 1/8" steel bulkheads - but this is another chapter....

For more information about these services,
Please Email
or Call: 808.754.2082

  ElectroMarine Services

This doc last modified: 20010115.1259 EDT
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