Building services for residential property-domestic electrical installations

Question 1

That IET wiring regulations

Answer 1

The national standard in the UK for any new or amended electrical installations and for the general safety of electrical wiring in domestic another buildings

Question 2

The following factors a check to ensure the correctness of an electrical installation:

Answer 2

• Polarity: to ensure that the various elements such as sockets lights etc are wired up correctly
  – earthing: to ensure that a proper and continuous earth has been established
  – insulation resistance: to ensure the installation of the cables is in good order
  – wiring circuit continuity: to ensure that the Earth, neutral and live wires are all properly connected and continuous

Question 3

MCB’s

Answer 3

Miniature circuit breakers

Question 4

A typical modern electrical installation diagram:

Answer 4

Question 5

Zones within bathrooms

Answer 5

Question 6

Zones within bathrooms diagram

Answer 6

Question 7

RCD

Answer 7

Residual current device

Question 8

The building regulations: part M

Answer 8

Provision should be made between 450 mm in 1200 mm from finished floor level

Question 9

Appropriate Heights for power sockets, TV sockets and telephone Jack points

Answer 9

450 mm and 1000 mm

Question 10

Appropriate Heights for cooker switches immersion switches, doorbells and entry phones

Answer 10

Between 900 mm and 1200 mm

Question 11

Smoke detectors – ionised chamber type

Answer 11

Smoke entering the ionisation chamber interrupts a small current between two electrodes and set the alarm off

Question 12

Smoke detectors – optical chamber type

Answer 12

When smoke enters the chamber, some light is scattered by the smoke particles interrupting the sensor and triggering the alarm

Question 13

Inspection and certification – hierarchy of inspection

Answer 13

Question 14

Types of certification.

Most certifying body is issued a number of standard electrical report forms, these include:

Answer 14

– Domestic installation certificate
– electrical installation condition report (EICR)
– minor electrical works certificate
– part P building regulation certificate

Question 15

RCBO’s

Answer 15

Residual current breaker with over current

Question 16

Electrical safety standards in private rented sector regulations 2020

Answer 16

Regulations require landlords to have electrical installations inspected and tested by person who is qualified incompetent at least every five years and have to provide a copy of the electrical safety report to the tenants and the local authority if requested

Question 17

Reporting on electrics.

Based on our earlier session, we have only two options

Answer 17

Question 18

Report should be structured in the following way:

Answer 18