June 10, 2023
It's very nice to decorate a new house, but if circuit modification is unwise, it will cause a number of inconveniences and even hidden security risks.
Besides, not all people know how to decorate. Nowadays, there are good and bad finishing companies, and skills of electricians are different. I, as a non-specialist, cannot figure out tricks, and this is a real headache.
What are challenges of repairing home improvement circuits? Let's look at conscience of a 30 year old electrician, remember these points and decoration will not be deceived.
01 Bare wire buried in wall
According to regulations, when wires are buried in wall, protective tubes must be put on them. Some construction teams, taking advantage of owner's trust or ignorance, bury wires directly into wall, bypassing water conduit.
This is a very typical and easily detectable behavior when cutting corners and materials. The consequence of this is that wires are subject to aging and damage, and wires cannot be replaced, making maintenance N times more difficult. .
02 Overloading of wires in a pipeAccording to specifications of electrical equipment, cross section of wire to be placed should not exceed 30%~40% of pipe. To cut corners, some master builders often run multiple wires into same pipe.
This can easily lead to a lack of gaps in tube, so that heat generated when wire passes through tube with a large current cannot be dissipated, which may lead to aging and a fire hazard.
03 "Joint control" of strong and weak electricityPut strong electricity (such as lighting wires) and weak electricity (such as telephone lines, network cables) into a pipe or box during construction, saving one pipe or box, saving time, effort and materials.
But this will cause interference when making calls and browsing Internet. At same time, too many flows in one channel can lead to a fire.
04 The terminal does not have a through box
When laying wire, length may not be enough and wiring must be done. Some construction crews will not add a feed-through box after line is connected, but will insert it directly into pipe.
However, interface is often place where problems most often occur. The practice of leaving thread ends in tube makes repairs very difficult when problems arise later.
05 Cutting through walls "barbarian operation"Laying circuits and some conduits requires chiselling and burying pipes into wall, and not all walls are suitable for chiselling. Many finishing workers often mindlessly chisel in construction, and chiseling a load-bearing wall can damage building's load-bearing structure. In addition, grooves in ground also need to be handled carefully so as not to damage floor.
Correct cuts should be horizontal and vertical lines, parallel pipes at a height of 60-90 cm from ground, sockets cut 40 cm from ground, pendant air conditioner sockets cut 2.2 meters from ground, switches 1.2 meters from earth. earth -1.4 m slot.
06 Aluminum wire for power wireThe power wire should ensure use of cross-section of copper wire, aluminum wire is easy to oxidize, and connection is easy to catch fire. In short, frequency of electrical fires in households using aluminum wires is ten times higher than when using copper wires.
07 Hidden indoor switch
Some homeowners think that position of main switch is obvious when decorating. This affects appearance, so main switch is hidden behind some structures, leaving an imperceptible fire hazard.
08 Fire, neutral and ground wires are uneven in color separationPoor construction crews may use lines with inconsistent color separations to connect, and these lines are most likely made up of lines left over from other construction sites. This will not only make maintenance difficult, but also easily lead to incorrect connection.
09 The wires in electrical box are tangledDuring installation of electrical panel, some construction crews tried to be quick and did not tie up wires in electrical panel, leaving them strewn and scattered. This does not facilitate further maintenance of electrical panel, but also creates a potential safety hazard. short circuit and fire in domestic circuit.
The house is our warm haven, and many people are wary of decorating it. Knowing hidden misconceptions about home improvement scheme renovations can help ensure safety and avoid falling into trap of decorating companies.
