17th Edition Test Questions: 300 Questions to Help You Pass The 17th Edition Exam
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Description
Sample questions for assisting you pass the exam and getting to grabs with the IET Wiring Regulations Seventeenth Edition Book.
2. Where an autotransformer is used for step-up purposes:
a) a single-pole switch can be used
b) a linked switch breaking all live conductors must be used
c) no controlling switch is required
d) only a fuse is required
2. Where an autotransformer is used for step-up purposes:
a) a single-pole switch can be used
b) a linked switch breaking all live conductors must be used
c) no controlling switch is required
d) only a fuse is required
