DL8000 Preset Instruction Manual
Revised February-2016
Installation and Use
2-19
Position all wiring within the unit to avoid unnecessary crimping
and overcrowding and to insure proper clearance for the instrument
door and hinges.
After completion, thoroughly check the wiring to insure that input
AC power and all field I/O signals are correctly connected at the
DL8000 terminations and at the terminations located on the
corresponding field device.
2.7.3
22B
Electrical Wire and Cable Selection and Installation
All wiring must conform to the National Electrical Code; to local, state,
or other jurisdictions; and to company standards and practices.
Following are recommendations for 115/230 Volts ac power wiring:
Use multi-strand copper conductor wire and cable when connecting
the DL8000 to the power source and the field devices.
Ensure that all wire and cable is in new condition and adheres to the
manufacturer's quality standards with the size, type of insulation,
and voltage rating.
Use the following recommended wire types and sizes for AC power
input to the DL8000:
•
Power feed should be 100 or 240 Volts ac, 50 to 60 Hertz, single
phase, three-wire. Locate a 15 Amp circuit breaker and
optionally a power disconnect switch in a safe area.
•
Use wire size AWG 14 for power feed for distances up to 250
feet.
•
Use wire size AWG 12 for power feed for distances of 250 to
500 feet.
•
Use wire size AWG 10 for power feed for distances of 500 to
1000 feet.
Note
:
Power feed distances greater than 1000 feet are
not
recommended.
•
Single-conductor wiring must be THWN type, which is moisture
and heat-resistant thermoplastic with nylon jacket, approved for
dry-and-wet locations, and has a maximum operating
temperature of 75 degrees Celsius (167 degrees Fahrenheit). The
wire or cable jacket must contain the Underwriters Laboratories,
Inc. mark for Gasoline and Oil Resistant, II.
Ensure that shielded wires and cables for meter pulse signals have
shield-drain wires. The shield-drain wires must not be more than
two AWG sizes smaller than the conductors for the cable. The
shield-drain wire must be connected to ground at only one end of the
run.
