Updating house wiring
The unit distributes the electricity, via fuses of one kind or another, to the different circuits in the house.
The older fuse wires are being replaced gradually by their modern equivalent, the MCB or miniature circuit breaker.
According to Wago, the new 221 wiring connectors require 40% less space.
Not only are the new connectors smaller, they also have clear see-through housings that let installers check their work.
Split Load Board A split load board is designed for total safety and incorporates an RCD (Residual Current Device, shown as E in the picture above) as well as the double pole switch (D).
The split board shown here has one RCD and is a simple version to show the user how the board works.
It is also an offence to interfere with the seals on the electricity meter.
The modern consumer unit is the centre, or heart, of the wiring system in the home.
Wago USA has explained that the 32A rating is in accordance with IEC and international standards.Shown in the consumer unit casing above, it is a metal, pressed bar, to which the MCB's clip.They simply push on via a spring loaded lock at their back.RCD's also work by detecting an imbalance between the Live and the Neutral conductors and this feature is a requirement for all Class 2 double insulated equipment.As they are very sensitive, it is not practical to fit one RCD to protect the whole house.
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An RCD is a manually operated isolator switch, but it is also an automatic safety device that will trip and cut off as soon as it senses an earth fault.