What colour is the R2 conductor - Green & Yellow, what colour is the R1 conductor - Brown, what is insulation resistance measured in - MΩ Meg Ohms, what is continuity measured in - Ω ohms, what conductor do we allow to be switched - Line, what does CSA stand for - Cross sectional area, what would happen to resistance if a cable size is doubled - resistance would be halved, what would happen to resistance if cable length is doubled - resistance would double, for a 230 volt circuit what voltage setting should insulation resistance be tested at - 500 volts DC, What devices provide protection within a consumer unit - Circuit Breakers or Fuses, How many ohms (Ω) is a MΩ - 1 Million ohms, What is the nominal output voltage for a single phase supply (Uo)  - 230 Volts AC, What is the term used for a cable connecting 2 , 2-way switches  - Strappers, What does BC stand for on a lamp holder - Bayonet Cap, What does ES stand for on a lamp holder - Edison screw,

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