The maximum earth electrode resistance, in a TT system, where the circuit is protected by a 30 mA RCD to comply with the maximum permitted level of touch voltage is:
a. 1666.7 Ω
b. 17666.7 Ω
c. 166.6
d. 5.0
Guidance Note 3 advises that periodic testing be carried out:
a. At night
b. Avoiding unnecessary dismantling
c. With all circuits isolated
d. By a minimum of 2 people
Where it is impossible or impractical to disconnect the load from a circuit under test during a periodic inspection
what alternative should be used to the standard method of insulation resistance test?
a. Miss this test out
b. Test with the load connected
c. Test between neutral and earth only
d. Test between L & N together and earth

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