In addition to Approved Document B (Fire safety) the latest Building Regulations 2000, Approved Document P, effective January 2005, and Building (Scotland) Regulations 2004 Technical Handbook 4 allocate full responsibility to the electrician to make good the fire performance of any firerated floor/ceiling/wall after carrying out an electrical installation, with possible legal action being taken for noncompliance.

This is further reinforced by the IEE Wiring Regulations 16th Edition BS 7671:2001, section 527-02-01, applying to all buildings:

“Where a wiring system passes through elements of a building construction...the openings remaining...shall be sealed according to the degree of fire resistance required of the element concerned...”

It doesn't end there. Part E of the Building Regulations in England & Wales, Technical Handbook 5 of the Building (Scotland) Regulations and Technical Booklets G & G1 of the Building Regulations (Northern Ireland) all require that penetrations through walls, floors or ceilings for electrical installations should be made good in order to minimise the transmission of sound.