Walking around the alleys of Taipei, you can see apartments that are over 30 or even 40 years old everywhere. These old houses carry many memories, but the "blood vessels" inside them - the electrical wiring system - may have been overwhelmed. The power distribution design back then was for basic household appliances such as lights, TVs, and refrigerators. It is absolutely unimaginable that a family today has computers, air conditioners, microwave ovens, dishwashers, air purifiers, and other high-power-consuming equipment at the same time. Many heartbreaking fire accidents are caused by insulation deterioration or overheating of old wires. Before you consider any landscaping improvements to your old home, be sure to review these four electrical safety red lights.
Red light 1: Are there "antique" fuses in the electrical box or are the fuseless switches out of date?
Open your home's electrical distribution box (usually located at the door or in the kitchen). If you see not a neat row of switches (non-fuse circuit breakers, NFB), but a row of ceramic cylindrical "fuses", this is the first red flag. The fuse will blow to cut off the power when the current is too large, but its response is slow and it needs to be replaced after blowing. The safety is much lower than that of modern NFB. In addition, even if you have replaced it with an NFB, if its total current amperage is too low (such as only 30A or 50A), it will not be able to meet the needs of modern households.
Safety inspection and action: Immediately plan to update the entire distribution box to a new NFB distribution box that complies with CNS standards. A well-planned modern distribution box should include a main switch (recommended to be at least 63A or 75A) and separate the home circuits according to purpose, for example: dedicated circuits for air conditioners, kitchen sockets, and bathroom electric water heaters; lighting and general sockets should also be separated. This is not only safe, but also facilitates troubleshooting in the event of future failures.
Red light 2: Is the wire still an old "flower wire" or a "white flat wire" with insufficient wire diameter?
Before the 1980s, electrical wires commonly known as "flower wire" (multiple strands of thin copper wire inside the PVC insulation layer) were commonly used in Taiwanese residences, and their insulation and heat resistance were poor. Later, single-core solid copper wire "white flat wire" (VVF wire) was used, but the common wire diameter is only 1.6mm², its safe current is about 15 amps, and it can only carry about 1650 watts of equipment. Just turning on a 1.5-ton air conditioner may approach the limit.
Safety Checks and Actions: During renovation, be sure to request "replacement of all electrical wiring in the room." Modern standards require:
• Lighting circuit:Use at least 1.6mm² wire diameter.
• General socket circuit: Must use 2.0mm² wire diameter.
• High power consumption dedicated circuits (such as air conditioners, electric water heaters, kitchen oven sockets): Must use a thick wire diameter of 5.5mm² or even 8mm², and match it with a 20A or 30A dedicated fuseless switch.
Wires should also be PVC wires with the "Commodity Inspection Mark" of the Bureau of Standards and Inspection of the Ministry of Economic Affairs or higher-grade XLPE wires.
Red light three: The number of sockets is seriously insufficient, causing the extension cord to look like a spider web?
Old house rooms may only have one or two sockets, so modern people have to rely on extension cords. When a computer, monitor, printer, and electric heater are plugged into an extension cord at the same time, the current has far exceeded the load capacity of the old wire in the wall and a single socket. This is one of the most common scenarios that causes wires to overheat and catch fire.
Safety review and action:Re-planning the number and location of sockets is the focus of electrical wiring renovation. Suggestions:
• Living room TV wall: Plan 4-6 sockets, including Internet and TV signal holes.
• Beside the desk or bedside table: There are 2 sockets on the left and right, including USB charging holes.
• Kitchen: Set up independent dedicated sockets according to the location of large appliances (refrigerators, ovens, microwaves, dishwashers, etc.).
• Bathroom: You must use a special socket with a waterproof cover, and be sure to install a "leakage circuit breaker" (ELCB or GFCI), which can trip within 0.1 seconds in the event of a leakage, saving a life.
Red light four: The switch socket panel is yellow and loose. The internal wiring may have been oxidized?
Switch and socket panels are the interface between the power system and our daily contact. If you find that the panel is severely yellowed or cracked, there are sparks or abnormal noises when switching, or the plug is loose and easy to fall after being inserted, these are not just aesthetic problems. It means that the internal metal contacts may have been oxidized and their elasticity is fatigued, resulting in increased resistance and easy accumulation of heat, which is a potential fire point.
Safety inspection and action: When changing wiring in the whole room, update all switches and socket panels at the same time. Choose products with safety seals and reliable quality. Recommended use:
• The socket is equipped with a "safety baffle" to prevent young children from accidentally inserting foreign objects.
• The switch has a "fluorescent indicator": easy to identify at night.
• The metal parts are made of thick phosphor bronze: good conductivity, sufficient elasticity, and not easy to oxidize.
After replacement, not only the safety is greatly improved, but also the space of the old house can be instantly refreshed.
Conducting a "health check" and "major surgery" on the electrical system of an old house is a necessary investment that cannot be saved. It does not have an immediate visual effect like decoration, but it is the foundation for the safety and modern comfortable life of all residents. Faced with the many old apartments in Taipei, homeowners should have correct knowledge about electrical safety. When planning renovations, "replacing all electrical wiring in the house" should be listed as a priority and non-negotiable project. Only then can they truly transform their old homes into safe and convenient modern residences.
New knowledge on air-conditioning power consumption and Taiwan climate maintenance regulations in recent years (2025-2026 current situation)
With the high temperatures in summer breaking historical records and the adjustment of electricity price structure in recent years, the latest statistics from the Energy Administration of the Ministry of Economic Affairs show that air-conditioning equipment accounts for more than 47% of residential electricity consumption in summer. Many people mistakenly believe that if the air conditioner is not cold, they only need to "replenish the refrigerant." However, in fact, refrigerant is not naturally consumed during normal operation in a closed circuit. If the refrigerant is insufficient, it means that there are micro leaks in the copper pipes or joints. Simply replenishing the air conditioner will only treat the symptoms but not the root cause. Refrigerant leakage will aggravate the high temperature overload of the compressor and shorten its service life.
According to Taiwan's standard operating specifications for air-conditioning projects, it is recommended that professional technicians with a refrigeration and air-conditioning decoration technician license perform "full machine high-pressure water washing and evaporator deep sterilization" every 1 to 2 years for detached air-conditioning indoor units. Especially in the humid summer in the Shuangbei Basin, the air drum and water collection tray are easy to breed black mold and jelly-like biofilm. This is also the main reason for the sour smell in the air-conditioning outlet and the backflow of the drainage pipe. Regular maintenance can maintain CSPF (Air Conditioning Seasonal Performance Factor) level one energy efficiency level, which can save an average household 15% to 20% of air conditioning electricity bills every year.
Autonomous simple maintenance vs professional maintenance safety red line
- Homeowners can do by themselves: Remove and clean the nylon filter regularly every 2 to 3 weeks (rinse with clean water and dry in a cool place, do not expose it to the sun to avoid deformation and embrittlement); clean the air outlet blades of the indoor unit with a dry cloth; check whether there is any accumulation of debris within 50 cm around the outdoor unit that hinders heat dissipation.
- Professional technicians must be entrusted according to regulations: Refrigerant pressure testing and leakage repair welding, high-pressure cleaning of indoor unit air drums and aluminum fins with liquid chemicals, reset of the drainage slope of hidden cold water pipes in the ceiling, and 220V dedicated power circuit configuration and leakage circuit breaker replacement.
