Installation, Continued) – Blue Sea Systems 8005 DC Analog Ammeter - 0 to 25A with Shunt User Manual
Page 2
Installation
(continued)
3. W
ire
Selection
The 8005 and 8038 ammeters utilize an internal shunt as their current sensing device.
The
nature of current measurement is that the full current to be measured must
fl ow through the
sensing device.
Therefore it is necessary to run wire to the meter of suf
fi cient size to carry the
current to be measured.
The wire size will vary depending on the total distance of the wire run,
the
T
O
TA
L length of the positive and negative wires.
There must be a fuse or circuit breaker in
the positive wire lead to the meter
. Choose a wire and fuse based on the table below
.
Wire Run (Feet)
10
15
20
25
30
35
40
50
60
70
80
Wire Size (A
WG)
10
10
8
6
6
6
4
4
2
2
2
Maximum
Fuse
(A)*
60
60
80
120 120 120
160 160 210 210
210
*
These maximum allowable fuse sizes (Maximum allowable wire amperages) are for wires
outside of engine spaces. Wires inside engine spaces have a maximum allowable wire
amperage of 15% less, therefore maximum allowable fuse sizes must be reduced by 15%.
4. Connection
Notice the dif
ference between a serial connection and a parallel connection in the diagram
below
. Internal shunt ammeters are mounted in a serial con
fi guration.
Choose the site in the circuit to be measured where the meter is to be installed. It may be either
in the positive or negative side of the circuit.
Break the circuit at this point and install the meter
. Be certain to attach the wire end nearest the
positive side of the circuit to the meter terminal marked + (positive).
Attach the wire nearest the
negative side of the circuit to the meter terminal marked - (negative)
5. Calibration
The 8005 and 8038 ammeters are calibrated at the factory and recalibration should never be
necessary
. However
, if adjustment does become necessary the needle may be reset to the zero
mark. In the center of the black area on the meter front is an adjustment screw
. This screw
activates a small cam that de
fl ects the meter needle slightly to adjust the needle position. Using
a small screw driver
, turn the screw no more than 90 degrees right or left, as necessary
. DO
NOT
ROT
A
TE
THE
ADJUSTMENT
SCREW
THROUGH 360 DEGREES.
PN 8038
PN 8005
Surface Mount
Panel Mount
Installation
(continued)
3. W
ire
Selection
The 8005 and 8038 ammeters utilize an internal shunt as their current sensing device.
The
nature of current measurement is that the full current to be measured must
fl ow through the
sensing device.
Therefore it is necessary to run wire to the meter of suf
fi cient size to carry the
current to be measured.
The wire size will vary depending on the total distance of the wire run,
the
T
O
TA
L length of the positive and negative wires.
There must be a fuse or circuit breaker in
the positive wire lead to the meter
. Choose a wire and fuse based on the table below
.
Wire Run (Feet)
10
15
20
25
30
35
40
50
60
70
80
Wire Size (A
WG)
10
10
8
6
6
6
4
4
2
2
2
Maximum
Fuse
(A)*
60
60
80
120 120 120
160 160 210 210
210
*
These maximum allowable fuse sizes (Maximum allowable wire amperages) are for wires
outside of engine spaces. Wires inside engine spaces have a maximum allowable wire
amperage of 15% less, therefore maximum allowable fuse sizes must be reduced by 15%.
4. Connection
Notice the dif
ference between a serial connection and a parallel connection in the diagram
below
. Internal shunt ammeters are mounted in a serial con
fi guration.
Choose the site in the circuit to be measured where the meter is to be installed. It may be either
in the positive or negative side of the circuit.
Break the circuit at this point and install the meter
. Be certain to attach the wire end nearest the
positive side of the circuit to the meter terminal marked + (positive).
Attach the wire nearest the
negative side of the circuit to the meter terminal marked - (negative)
5. Calibration
The 8005 and 8038 ammeters are calibrated at the factory and recalibration should never be
necessary
. However
, if adjustment does become necessary the needle may be reset to the zero
mark. In the center of the black area on the meter front is an adjustment screw
. This screw
activates a small cam that de
fl ects the meter needle slightly to adjust the needle position. Using
a small screw driver
, turn the screw no more than 90 degrees right or left, as necessary
. DO
NOT
ROT
A
TE
THE
ADJUSTMENT
SCREW
THROUGH 360 DEGREES.
PN 8038
PN 8005
Surface Mount
Panel Mount