General Electrical Terms
When an electrician installs a new circuit , alters the wiring anything which is not like for like they need to issue a minor works certificate or an electrical installation certificate. 
British Standard
BS 7671 17th edition is the standard to which all electricians must obide by.To prove they comply with these standards an anual inspection is carried out by a part P governing body such as NICEIC, ECA ,NAPIT OR ECA.
Electrical installation condition report is an electrical survey which identifies any potential hazards in an installation . The report will show the condition of all the electrics and state whether any improvements need to be carried out to conform to relevant safety standards.
Part P
The Part P requirement is that “Reasonable provision shall be made in the design and installation of electrical installations in order to protect persons operating, maintaining or altering the installations from fire or injury.”
The electrical installations must be safe! Part P applies to fixed electrical installations in dwellings. It  affects many of the typical jobs undertaken by electrical contractors, particularly special locations such as kitchens and bathrooms.Part P competent schemes such as NICEIC were introduced  to permit firms that had been assessed as sufficiently competent, to self-certify that their work complies with all applicable requirements.
A Consumer unit
A consumer unit is also known as a fuse box. It consists of fuses or minature circuit breakers MCBs.
A Circuit
Includes lighting points, sockets and switches that are all supplied from the same origin .
Residual current device is a safety device that switches off the electricity automatically when an earth fault is detected .
Circuit breaker /MCB
A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by over load or a short circuit . Its basic function is to detect a fault and interrupt continuity to discontinue electrical flow .
For Further details Contact us! Electrician in swansea