Volvo VNL, Руководство по обслуживанию

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Group 30 Electrical System—VNL, VNM Specifications
Specifications
Replacement Wire Sizes
The size of wire used when installing accessories or re-
pairing existing electrical items is dependent on the length
of the wire and power requirements of the accessory. The
chart below can be used to determine the proper wire size
for 12 volt systems.
To use the chart, mark the appropriate length for the wire
being installed in the m/ft column. Also mark the rating in
the amps/watts column. Then draw a line connecting the
mark in the length column to the one in the rating column.
The point where the line crosses the wire size column is
the size of the wire required. If the line crosses the wire
size column between gauge sizes, round up to the next
larger size.
If replacing a wire and the amperage of the circuit is
not known, it can be measured using a digital multimeter
placed in series in the circuit.
EXAMPLE:
A 12 volt hydraulic pump motor is rated at 20 amps.
The complete length of the circuit (power and ground
sides) is approximately 20 feet.
A line drawn from 20 on the length column to 20 on the
rating column crosses the wire size column at the 8.
This indicates that the minimum wire size for the applica-
tion is 8 gauge.
W3001006
Chart for calculating relationship between wire
length, gauge and amperage/wattage
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