BS 6007:2006 pdf free.Electric cables – Single core unsheathed heat resistingcables for voltages up to and including450/750 V, for internal wiring.
BS 6007 It shall be permitted for a cable for which a harmonized code designation is given in the appropriate  construction table, to carry anindication that it has been manufactured under a licence issued by oneof the approvals organizations subscribing to the CENELEC agreementon the use of a commonly agreed marking for cables. If it does carrysuch an indication, this shall be of one of the following.
a) The mark of the approvals organization, followed by the Common Marking applied by one of the alternative methods specified in5.2.3.
b) An identification thread extending throughout the length of the cable indicating the approvals organization.The base colour shallbe yellow and this shall be serially dyed or printed red and black.The lengths of the coloured sections shall conform to the dimensions laid down by CENELEC for that approvalsorganization (see PD 2379).
The name CENELEC, in full or abbreviated, shall not be directlymarked on, or in, the cable.
Cables shall be marked with the CENELEC harmonized code designation, as given in the applicable construction table. The markingshall be on the insulation.
The marking shall be continuous as specified in 5.2.3.Conformity shall be checked by measurement.
Clarity and durability of colour and markingThe colours shall be clearly identifiable and durable.
Conformity shall be checked by trying to remove the colour of thecores by rubbing the core lightly 10 times with a piece of cotton woolor cloth soaked in water.Any marking by printing shall be durable.Conformity shall be checked by rubbing the marking lightly 10 timeswith a piece of cotton wool or cloth soaked in water.
Schedule of tests Tests to be performed on cables specified in this standard shall be asspecified in Table 2, which refers to the relevant clauses of the standard specifying the requirements and test methods as well as thecategory of each test which applies, i.e. T, S or R (as defined in clause 3).BS 6007 pdf download.