Electric cars for home — selection, characteristics, installation and maintenance of devices
A short circuit always happens unexpectedly — in the middle of the night, on vacation, when no one is at home. The transaction does not warn about its intentions. Network overload also comes quietly: they turned on the washing machine, microwave, electric kettle — and now the electric cars for the house turn off the power supply, saving the house from fire.
It is no accident that circuit breakers have become a must-have element of home electrics. They replaced outdated plugs and fuses, which required constant replacement after each operation. Modern devices restore operation by simply turning a lever.
Characteristics that determine reliability
The rated current is the main parameter of the machine. 16A devices are used for socket groups, 10A for lighting, and 25A or 32A for powerful consumers like electric stoves. The time-current characteristic is indicated by the letters B, C, D:
- Characteristic B is suitable for circuits with active load — lighting, heaters;
- Feature C is universal for most home appliances;
- Characteristic D is used for motors with high starting currents.
The right choice protects not only from overloads, but also from false alarms. A 10A automatic in the lighting circuit will not switch off from a short-term surge of current when energy-saving lamps are turned on.
Installation and connection without errors
Installation requires following simple rules. The supply wire is connected to the upper terminal, and the load is connected to the lower terminal. The tightening of the contacts should be uniform, without distortion. A weak puff causes the contacts to heat up and burn out.
The DIN rail simplifies the installation and disassembly of devices. The machines snap onto the rack in one motion and are released with a screwdriver. The group placement of several machines requires the use of connecting buses:
- the phase bus connects the input contacts of all automata;
- The zero bus collects zero wires from all groups;
- the grounding bus ensures the safety of the system.
Labeling each group makes it easier to find the right machine when shutting down. The labels "kitchen", "bedroom", "bathroom" save time during maintenance.
Device maintenance and replacement
Circuit breakers have been operating for decades without intervention. Prevention is limited to periodically checking the tightening of contacts and testing with the "TEST" button on difautomats. Heating of the housing indicates problems with the contacts.
Replacement is required in case of mechanical damage or after repeated short-circuit failures. A worn-out machine may not work at a critical moment. Signs of wear — burnt contacts, jamming of the lever, extraneous sounds when