Mainship 40 Trawler Single - Page 79

M
ainship 40 Trawler Sin
g
le & Twin • DC Electric S
y
stems
7.
3
7.1.3 Batteries
The batteries installed in
y
our boat have been selected
for their abilit
y
to furnish startin
g
power based on en
g
ine
s
tart
i
n
g
requ
i
rements, as we
ll
as t
h
e
i
r a
bili
t
y
to powe
r
the D
C
components attached the electrical s
y
stem.
S
ee
Table 1
f
or the recommended batteries
f
or
y
our boat.
WARNING
! !
Batteries contain Sulfuric Acid and can cause severe per-
s
onal in
j
ur
y
i
f
mishandled. Avoid contact with e
y
es, skin,
or clothin
g
. In case o
f
contact,
f
lush with water at least
15 minutes. If swallowed, drink lar
g
e quantities of wate
r
or Milk o
f
Ma
g
nesia, beaten e
gg
or ve
g
etable oil, and
g
et
medical attention immediatel
y.
WARNING
! !
C
har
g
in
g
batteries produce
g
asses which can explode i
f
i
g
nited. Explosion can shatter a batter
y
. Batter
y
acid can
c
ause severe personal in
j
ur
y
such as blindness. Keep
flame, spark, and smokin
g
materials awa
y
from batteries
while char
g
in
g
.
C
har
g
e in a well ventilated area
.
WARNING
! !
Batteries contain a lar
g
e amount of potential electri-
c
al ener
gy
! Extreme care must be used when workin
g
with batteries. An improper connection to a batter
y
can
re
l
ease enou
gh
ener
gy
to cause severe persona
l
i
n
j
ur
y
o
r
f
ir
e
.
T
able 1 Recommended Batteries
(
or equivalent
)
M
F
G/
P
N
G
roup
S
iz
e
V
o
lt
s
Q
t
y
S
towawa
y
S
T
8
DD
C
4
00
8D
12
3*
S
T27DP7
30
2
7
1
2
1
*
4 With
O
ptional Inverter, 5 with
O
ptional Bow Thruster
7.1.4 Batter
y
Char
g
in
g
S
y
stem
An alternator on the en
g
ine char
g
es the batter
y
while the
e
n
g
ine is runnin
g
. Check
y
our en
g
ine information packet
for more information about these s
y
stems.
The batter
y
char
g
er
(
fi
g
. 7.3
)
is located on the en
g
ine
room fwd bulkhead. The char
g
er is protected b
y
a fuse
on the positive and
g
round side at the char
g
er.
Fi
g
ure 7.3 Batter
y
C
har
g
er
7.1.5 Breakers, Switches, and Fuses
All
e
l
ectr
i
ca
l
s
y
stems a
b
oar
d
y
our
b
oat are prov
id
e
d
w
i
t
h
overcurrent protection in the
f
orm o
f
breakers or
f
uses.
Examples o
f
breakers are the s
y
stem or component
c
ontro
l
s at t
h
e
M
a
i
n
Di
str
ib
ut
i
on
P
ane
l
or
MDP
, or
i
n t
h
e
batter
y
selector switch panel.
Sy
stems that would nor-
mall
y
require
y
ou to ener
g
ize them
f
or use are provided
w
i
t
h
s
w
i
t
ches.
The breaker and switch panels are detailed
f
urther in the
e
nd of this section under “Le
g
ends”
.
7.1.6 Grounds, Bondin
g
, and Zinc
In several locations aboard
y
our boat
y
ou will
f
ind
g
roundin
g
blocks such as the one pictured in fi
g
. 7.4.
WARNING
! !
Never test a circuit
f
or power b
y
connectin
g
or touchin
g
the red
(
positive
)
wire to a
g
round circuit.
S
erious in
j
ur
y
or fire could result
.
Fi
g
ure 7.4
G
roundin
g
Block
Whil
e t
h
ere are
b
on
di
n
g
bl
oc
k
s as we
ll
a
b
oar
d
y
our
b
oat,
the
g
roundin
g
blocks can be determined b
y
the
g
roups