Dc Power Distribution; Fuses And Breakers - Sea Ray SDX 270 Owner's Manual

6. Dc p
oWer
Power is fed from the house batteries to the main
DC Breaker Panel. This panel feeds power to the
Control Station, the DC Distribution Panel, and
devices located in the bilge.
The Control Station fuse block(s) powers circuits
at the helm. The cabin loads are powered from the
DC Distribution Panel in the salon.
7. f
uses anD
In the event it becomes necessary to replace a fuse
or an electrical breaker, REPLACE THE FUSE OR
BREAKER ONLY WITH A FUSE OR BREAKER
OF THE SAME RATING. The amperage is marked
on the fuse or breaker. It is recommended that you
carry spare fuses and breakers. Refer to individual
component user manuals for the proper fuse and
breaker sizes.
Use of higher amperage fuses or breakers is a
fire hazard.
Use fuses and breakers having the same
amperage rating as the original or as specified.
If a fuse or breaker is replaced with one of lower
amperage, it will not be sufficient to carry the
electrical load of the equipment it is connected to
and will cause nuisance failures.
Conversely, if a fuse or breaker is replaced with one
of higher amperage, it will not provide adequate
protection against an electrical malfunction and
could create a possible fire hazard.
Some of the various types of fuses and breakers
used on your boat are as follows:
Fig. 29.1 is an automotive-
type blade ATO/ATC fuse
shown being used in an in-line
fuse holder.
SDX 270
SDX_270_Book 1.indb 29
SDX 270 E
D
isTribuTion
b
reaKers
! WARNING
(f . 29.1)
Ig
FUSE
S
lEctrical yStEm
Fig. 29.2 is a thermal breaker.
If it trips, the pin will pop out.
Push the pin back in to reset.
Figures 29.3 and 29.4 are
magnetic breakers. If they trip,
the toggle or rocker will switch
to the OFF position. Simply
switch them back to the ON
position to reset.
The cover on Fig. 29.4
protects it from accidentally
being turned off. It can be
turned off by inserting a small
screwdriver in the slot on the
rocker switch.
Fig. 29.5 is used to protect
high amperage equipment.
It is found in the bilge and
cockpit. It can be reset by
pressing the lever back
into the slot.
F i g . 29. 6 i s a c u r r e n t
limiting ANL type and if
blown must be replaced.
(f . 29.2)
Ig
(f . 29.3)
Ig
(f . 29.4)
Ig
(f . 29.5)
Ig
(f . 29.6)
Ig
29
5/8/2017 3:15:50 PM