Introduction
Probe Wiring Safety Issues
5
Probe Wiring Safety Issues
Wiring between the console and the probes is of limited electrical power so that there is insufficient energy to
ignite fuel. In the console, the low power probe wiring is considered intrinsically safe because it is physically
isolated from all high power wiring. To maintain the integrity of this safety feature probe wiring can not share the
same conduit with power wiring. In addition, probe cables can only enter the console through the designated
intrinsically safe area knockouts.
If the TLS2/EMC2 System is being retrofitted into a paved site, you run direct burial cable to the probes, and then
seal over the cable grooves. Before trenching, you should diagram all conduit runs between the console’s intended
location and its deployed probes. Before considering buried cable runs, check with the local authority having
jurisdiction to be sure that direct burial practices are acceptable at your location.
Your site diagram will help you calculate conduit and wiring lengths, and necessary quantities of junction boxes,
sealing boxes, clamps, brackets, etc.
Throughout this planning process and in the actual installation, you must follow all latest National Electric Codes,
and applicable federal, state, and local codes as regards conduit type, depth below grade, sealing, grounding, wire
capacities, direct burial (if permitted), etc.
WARNING
Probes operate in areas where flammable liquids and explosive vapors may be
present.
FAILURE TO COMPLY WITH THE FOLLOWING WARNINGS AND SAFETY
PRECAUTIONS COULD CAUSE DAMAGE TO PROPERTY, ENVIRONMENT,
RESULTING IN SERIOUS INJURY OR DEATH.
Improper installation may result in fire or explosion causing serious injury or
death.
1. Read thoroughly and follow the instructions shipped with each
probe.
2. Probe wiring must enter the console only through their
designated areas.
3. Power wires and conduit must not enter the intrinsically safe
compartment of the console.
4. Substitution of components may impair intrinsic safety.
