Daily Archives: 26 January 2012

A ceiling heating system should incorporate means of limiting the temperature to:

A single-phase circuit using 2.5mm squared single-core pvc cables in conduit supplies a design current of 20A. If the cables are 15m long and have a rated voltage drop of 18mV/A/m, the actual voltage drop will be:

The maximum permitted value of earth electrode and earthing conductor (RA) for a circuit protected by a 300mA RCD and forming part of a 230V ac TT system is:

One item that should be included on charts and diagrams made available to the person carrying out the inspection and test is:

In the event of failure of the provision for basic protection, additional protection may be provided by:

It should be verified that any addition to an existing installation has:

Suitable precautions should be taken where either a reduction in voltage or a loss and subsequent restoration of voltage:

A permanent label with the words ‘Safety Electrical Connection – Do Not Remove’ shall be permanently fixed:

To provide protection against electric shock, the protective measure of double reinforced insulation relies on basic insulation and:

Where there is a danger of fire due to the nature of the stored material, a 100W spotlight shall be installed at a minimum distance from combustible materials of:

A conduit or cable trunking system classified as non-flame propagating need not be internally sealed providing its maximum cross-sectional area does not exceed:

A 6A BSEN60898 circuit breaker is used to protect a circuit with a maximum earth fault loop impedance of 3.83 Ohms would be type:

A copper earthing conductor not mechanically protected and not protected against corrosion is buried in soil. The minimum size of earthing conductor is:

Socket-outlets with a rated current not exceeding 20A and intended to be used by ordinary persons should be:

Which of the following methods should be adopted where fixed equipment having a high surface temperature is likely to have an adverse effect on adjacent materials?

Which of the following items must be included for checking during the initial verification of an installation?

Where practical, the main protective equipotential bonding to the gas service in a building should be made within:

Once complete a Periodic Inspection Report should be given to:

When selecting a cable for a single circuit installation, rating factors are to be used and applied to the:

For installations in places of public entertainment and on caravan parks, special requirements should be ascertained from the:

Where an RCD is used in an installation, the product of the rated residual operating current and the earth fault loop impedance in a TT installation should not be greater than:

Before issuing an Electrical Installation Certificate for a new installation, a recommendation must be made with regard to the inspection and test period. This recommendation is made by the person responsible for: