Introduction
National Electrical Code Compliance
8
OPERATING PRECAUTIONS
•
NO SMOKING.
Extinguish all open flames and pilot lights, such as on RV appliances.
•
TURN OFF
cell phones and other electronic devices to prevent sparks which could cause an explosion or fire.
National Electrical Code Compliance
The following information is for general reference and is not intended to replace recommended National Electric
Code (NEC) procedures. It is important for the installer to understand that electrical equipment and wiring located
in Class I, Division 1 and 2 installations shall comply with the latest appropriate Articles found in the National
Electric Code (NFPA 70) and the Code for Motor Fuel Dispensing Facilities and Repair Garages, (NFPA 30A).
Probe- and Sensor-to-Console Wiring
Wire Type
To ensure the best operating systems available, Veeder-Root REQUIRES the use of shielded cable for all probes
and sensors regardless of conduit material or application. In these installations, shielded cable must be rated less
than 100 picofarad per foot and be manufactured with a material suitable for the environment, such as Carol™
C2534 or Belden™ 88760, 8760, 8770 or similar.
Throughout this manual, when mentioning any cable or wire being used for probe and sensor
to console wiring, it will be referring to shielded cable.
Wire Length
Improper system operation could result in undetected potential environmental and health hazards if the probe- or
sensor-to-console wire runs exceed 1000 feet. Wire runs must be less than 1000 feet to meet intrinsic safety
requirements.
Splices
Veeder-Root recommends that no splices be made in the wire run between a sensor or probe junction box and the
console. Each splice degrades signal strength and could result in poor system performance.
Wire Gauges
Color coded
Shielded cable must be used in all installations. Probe- and Sensor-to-Console Wires should be #14-#18 AWG
stranded copper wire and installed as a Class 2 circuit. As an alternate method when approved by the local
authority having jurisdiction, 22 AWG wire such as Belden 88761 may be suitable in installations with the
following provisions:
• Wire run is less than 750 feet
• Capacitance does not exceed 100 pF/foot
• Inductance does not exceed 0.2
H/foot
Power Wiring
Wires carrying 120 Vac from the power panel to the FCC should be #14 AWG (or larger) copper wire for line,
neutral and chassis ground.
