Having just tried to memorise SANS 10142, I can confirm
6.7.5.5 The following do not need earth leakage protection:
..
d) a stove coupler that complies with SANS 60309-1/IEC 60309-1 and of
dimensions as given in SANS 337 (see 6.15.1.2.5). Amdt 5
What exactly this makes in terms of nullifying the need for protection I cant say.
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