Signs of a short circuit in case of fire
Burned out private wooden 2-storey house. At the time of the incident, there was cotton, and a huge red ball in the area of the SIP cable to the counter. The center of fire is in the place of the SIP cable. At this time and while they were being saved, a television was working in the house, i.e. after the counter. By this time, the neighbors ’power surged up at their neighbors, and their appliances turned off. Is this a confirmation of a short circuit on the network or a power surge? Can the SIP cable have traces of short circuit? What kind of form are they? Consumers constantly burn electrical appliances, stabilizers, homes. Constantly work is being done at the substation. Elseti provide handwritten evidence of their innocence. They say the residents themselves are to blame: they claim one power, but consume more. Could this affect security, or should they necessarily have some kind of email supply? What document of Elseteys, supply organizations has an independent indicator of the condition of equipment, quality of electric power? Could this be an external short circuit on the network, power surges? What are their symptoms? Is it possible to determine the short circuit on the residuals of self-supporting insulated wires? Is it possible that the ignition of the self-supporting insulated wire has the cause of a short circuit (jump), and the wire in the house to the equipment has secondary damage from a fire? Or SIP and wire in the house should have the same traces of fire?
Regards, Ivan.
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Hello! You write that the cable burned out completely, but you are told that the remnants of the cable do not have traces of a short circuit. You are misled - a short circuit was in any case, regardless of the reason the cable caught fire. In this case, the cable could catch fire due to a short circuit and protection failure, which did not disconnect the damaged section - a burnt cable. Protection - a circuit breaker in the metering panel, from which the cable comes. This protective device must be switched off during short circuit on the cable.
Also, the cable could catch fire for another reason, but in the process of burning its insulation, the wires were in contact, that is, there was a short circuit while the cable was burning. The cable cannot burn so that there is no short circuit.
While the cable burned, the wires touched, and if the short circuit was not eliminated (the circuit breaker at the power substation did not turn off), then the neighbors watched the power surges. Overvoltage and short circuit are different phenomena. If there were just voltage drops, then there should not be any traces of a short circuit. Electrical devices burn out from voltage surges, but this phenomenon should not cause damage to the cable.
Another question regarding cable protection and wiring in general. If there was an overload and the machine did not turn off as expected, or if the machine was not selected correctly, the cable could get warm. Heating the cable can lead to fire, especially if the cable was laid without additional protection directly on the tree (which is unacceptable from the point of view of fire safety).
Neighbors consume electricity as much as a limit is set on their home. That is, what kind of introductory automaton was set for them by representatives of electronic networks, this should be the case. Unauthorized neighbors should not set limits on consumption. Typically, the machine is installed before the meter, in the shield with a counter. The rating of the machine (current) is chosen by representatives of e-mail. networks and if the house will include more than the set limit (current machine), then the machine will turn off. Residents can not arbitrarily increase their limit - that is, set the machine to any current.
If the TV worked, respectively, there was no short circuit in the wiring or in the network. As for power surges - they could not be noticed on TV. Voltage drops can be seen by conventional incandescent lamps, by the unstable operation of the refrigerator.
In general, what can be concluded in a few words:
1. Short circuit somewhere on the line or voltage drops can not cause a fire
2. This cable should not be laid on wood without additional protection - this could be the main cause of fire
3. The cable may catch fire due to a short circuit in your wiring, due to a short circuit on the cable itself, due to overload, which did not turn off by the machine due to a malfunction or if it was incorrectly selected.
4. If the cable is completely burned out - the short circuit was in any case, regardless of the cause of its fire.
Well, it is possible that the cause of the house’s fire is completely different. I listed only the assumptions, but what really happened - I can not say.
You can not unreasonably blame the representatives of electronic networks, not knowing the exact cause of the fire.