Consumer unit

A consumer unit is a kind of switchboard （ A component of the power system , The power feed provides power for the auxiliary circuit ）.

In the UK , There are four main types of consumer units ：

• Main switch consumer unit - Provide the highest degree of circuit separation , Because all circuits must prevent leakage independently . This can also be an expensive solution , Because it must use RCBO instead of MCB.
• double RCD Consumer unit - By using two RCD Protect two groups of circuits from ground leakage , Provide compliance with para 17 A cost-effective solution to the regulation .
• High integrity consumer unit - It is usually used in large properties with more circuits , This type of consumption unit uses two or more RCD Provide good circuit separation , At the same time, it allows independent use RCBO. Usually, this type of consumer unit also allows completely flexible configuration , This means to use RCBO There is no limit to the number of .
• RCD Income consumer unit . Compared with other types ,RCD Input devices are less common , It does not use the main switch . They are usually used as sub boards of the main switchboard .