Month: November 2017

Protective Bonding Conductor Sizes

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Sizes of main Bonding Conductors… This can be confusing as the size of the main bonding conductor differs depending on the type of supply. In a TN-S or TT system the main bonding conductor is in relation to the size of the main earthing conductor which is dependant on the size of the incoming line … Read more

Domestic Consumer Units

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Consumer units in new and modern domestic installations should contain Residual Current Devices ‘RCDs’ as well as circuit breakers. Either as combined RCD/circuit breaker devices ‘RCBOs’ which can get a bit expensive or alternatively and less expensive through the use of split load boards with usually two RCCBs protecting multiple circuit breakers. Since January 2016 … Read more