In general, using 12 gauge wire is advisable for circuits that may carry higher loads or for long runs where voltage drop is a concern.
For standard lighting and general-purpose circuits, 14 gauge wire is usually sufficient and more cost-effective
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Orders weighing less than 5kg are R105.
Orders weighing between 5kg and 15kg are R150.
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In general, using 12 gauge wire is advisable for circuits that may carry higher loads or for long runs where voltage drop is a concern.
For standard lighting and general-purpose circuits, 14 gauge wire is usually sufficient and more cost-effective
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