On colour marking:
6.3.3.2 The means of identification for an a.c. circuit may be by colours or by numbers, as follows:
a) where colours are used
1) a neutral conductor shall be identified by black only,
2) an earth continuity conductor shall be identified by the bi-colour green/yellow only, or by being bare. Green/yellow insulated conductors shall NOT be used as live conductors under any circumstances,
3) a phase conductor shall be identified by a colour other than green/yellow, green or black, and
NOTE Welding cable manufactured to SANS 1576 should not be used in circuits above 100 V.
4) the colours may be applied at the ends of the conductor (of a multicore cable) by means of durable colour marking (e.g. insulating sleeves or by electrical insulating tape wound more than once around the conductor), and
b) where numbers are used, "0" shall indicate the neutral conductor.
On what you have got connected to the neutral terminals per your photos, I must also point out that:
6.6.1.11 If a conductor of cross-sectional area exceeding 4 mm2 is used, it shall be so installed to allow any one neutral conductor to be disconnected without disturbing the connection of any other neutral conductor.
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