Electrical Engineering Question:
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The most suitable item of equipment to mark a straight line in order to install a horizontal conduit over a distance of 4 m is a

Answer:

* a) Plumb line
* b) Spirit level
* c) Steel tape
* d) Chalk line

Answer – d

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A residual current device will disconnect underA 50 mm x 50 mm steel trunking has a tabulated space factor of 1037. If the tabulated factor for PVC cable having a cross sectional area of 6 mm2 is 21.2, the maximum number of these cables that can be installed into the trunking is