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9kW shower wiring.
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<blockquote data-quote="Ardet R" data-source="post: 469693" data-attributes="member: 30040"><p>Welcome to the forum.</p><p></p><p>The parallel arrangement has been covered by Andy.</p><p></p><p>However it is not very likely that the size of the cable is the issue, if this were the case then the damage would occur at other points in the circuit as well. It is more likely that the cable termination in the switch terminals is failing and causing the local overheating. Ensuring the cable being connected is clean bright copper and not suffering from heat corrosion and also ensuring the cable is firmly held in the terminals even after is has been manoeuvred back into position and the screws remain tight should prevent this sort of problem. Terminating two cables into the switch terminals will require even greater care to ensure they are securely terminated.</p></blockquote><p></p>
[QUOTE="Ardet R, post: 469693, member: 30040"] Welcome to the forum. The parallel arrangement has been covered by Andy. However it is not very likely that the size of the cable is the issue, if this were the case then the damage would occur at other points in the circuit as well. It is more likely that the cable termination in the switch terminals is failing and causing the local overheating. Ensuring the cable being connected is clean bright copper and not suffering from heat corrosion and also ensuring the cable is firmly held in the terminals even after is has been manoeuvred back into position and the screws remain tight should prevent this sort of problem. Terminating two cables into the switch terminals will require even greater care to ensure they are securely terminated. [/QUOTE]
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