It is recommended to install smart toilets separately by pulling wires, especially in old residential areas or households with a large number of high-power appliances. This is a key detail to ensure electrical safety and stable equipment operation. Here are specific analysis and suggestions:
1、 Why do we need to pull the wires separately?
Avoid the risk of tripping
When the heating, drying, and cleaning functions of the smart toilet work simultaneously, the instantaneous power can reach 500-800W. If it shares the circuit with high-power appliances such as water heaters (2000W+) and washing machines (500W+), the total power can easily exceed the rated value of the air switch (usually the maximum load capacity of the 16A circuit is 3500W), resulting in frequent tripping and affecting normal use.
Reduce potential leakage hazards
The bathroom is in a humid environment. If the smart toilet shares a circuit with other appliances, once a device leaks electricity, it will trigger the leakage protector of the entire circuit, causing a power outage throughout the house; A separate cable can narrow the range of leakage effects, only cutting off the power supply of the smart toilet, ensuring the normal operation of other electrical appliances.
Ensure voltage stability
The lines in old residential areas are aging and have thinner diameters (such as 1.5 square meters). If multiple devices are shared, it is easy for the circuit board and heating elements of the smart toilet to be damaged due to voltage fluctuations. A separate wire (recommended to use 2.5 square meters) can ensure a stable voltage of 220V; Extend equipment lifespan within a 10% range.
2、 Practical suggestions for pulling wires separately
Line specifications and layout;
Wire diameter: Priority should be given to selecting a 2.5-square copper core wire (capable of carrying a current of approximately 20A, meeting the needs of smart toilets and future small household appliances);
Socket position: 30-40cm above the ground (in accordance with the installation standards of smart toilets), avoiding areas with heavy water vapor such as shower areas and washbasins. If it is impossible to avoid, a waterproof box (IPX4 or above) should be installed;
Circuit independence: separate cables are drawn from the distribution box, and a 16A leakage protection circuit breaker is installed to distinguish it from high-power equipment circuits such as water heaters and air conditioners.
Special treatment for old residential areas;
If the original circuit is severely aged (such as aluminum wire, wire diameter<1.5 square meters), it needs to be replaced with a 2.5-square copper wire as a whole to avoid“ Separate cable” Later, it still tripped due to insufficient main line capacity;
If there is no reserved concealed line in the bathroom, an open line (hidden with PVC cable tray) can be used, which has lower cost, shorter construction period, and is suitable for temporary renovation.
Alternative solution (when budget is limited)
If it is temporarily impossible to pull the wire separately, the following conditions must be met:;
Intelligent toilet power<500W (only for basic cleaning and seat heating functions), avoid turning on high-power modes such as drying and instant cleaning;
When using high-power appliances such as water heaters and washing machines, ensure that the total power does not exceed the circuit's carrying capacity;
The socket must be equipped with leakage protection and well grounded to reduce the risk of leakage.
3、 Security check after installation
Voltage detection: Use a multimeter to measure the voltage of the socket, which should be at 220V+ Within the range of 10% (198V-242V), if the deviation is too large, it is necessary to check whether the line contact is good;
Grounding test: Use a grounding resistance tester to test the grounding resistance of the socket, which should be less than 4Ω Ensure that the power can be quickly cut off in case of leakage;
Load test: Turn on all functions of the smart toilet (heating, washing, drying), and at the same time turn on other small appliances in the same circuit (such as hair dryers, electric water heaters), observe whether they trip, and verify the carrying capacity of the circuit.
