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How to prevent the wire and cable from fire

October 25, 2019

Cable trench to keep dry

It is very important that the ground is dry before you bury an electrical cable. The ground will be hard to deal with under moist conditions. You don’t want to deal with electrical wires that you are going to bury where water is present. There is a strong possibility that you can suffer from an electrical shock.

To prevent the cable damp

Check the weather to be sure that it is not expected to rain. You also want to check the ground to be sure that it is not moist due to the last rain or leaking water sources. Once you have assessed that the ground is dry, you can began digging your trench where you are going to locate your underground cable. Assess the trench for dryness. You do not want to place your electrical cable in a place with moisture exists.


Resulting in insulation breakdown

Areas where an underground cable is placed must be completely assessed for the existence of moisture. In some states, it is required that your trench be dug at least 24” in the ground to avoid issues that come from the exposure to water. The heat that is created from the cable can cause the insulation around your cable to breakdown prematurely. These conditions can result in a short circuit and worse cases a fire.


Causing short circuit

Moisture on or around power cables can cause a short circuit. When this happens, the ground fault circuit interrupter (GCFI) should cut off or a circuit breaker opens. If this is the case, the wiring should be assessed carefully to avoid any issues that can result in someone getting hurt or worse. Keep you buried power cable free of moisture.

Insulating you power cable from fire hazards

The insulation that covers the electrical wire comes with a thermal rating that is designed to keep the conductive material at an ideal temperature. This rating changes when it is buried and so there is a need to use material that will assist the cable in maintaining an optimal temperature depending on the amount of use. Backfilling your buried wire with anything other than the required material can result in spontaneous combustion. Check with the National Electrical Code) to see what material is required to bury electrical wiring.

Cable circuit switch and protection 

Making sure you have a Ground Fault Circuit Interrupter (GFCI) installed along the circuit can insure that you underground cable is protected. The wire should also have a circuit breaker in the main box to give your wiring the additional protection that it needs. If there is an issue that causes either the GFCI or circuit breaker to open, then it may require the need to do an inspection of the entire cable to make sure there are not issues. The power cable quality must be good always.


Cable Laying Specifications

There should be a sufficient amount of distance between the heat pipe and the control cable. This distance should not be more than half a meter and eh power cable should not be less than one meter. Control cables and power cables must be split, layered and separated. None of them should be between layers. If the cables are not meeting the provision of the site, they should be taken to fire and heat insulation measures. The power cable must be good.

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