0.914 m - Working space around main switchboard according to IE rule 51

Q.  ______ should be provided as the working space around the main switchboard according to IE rule 51.
- Published on 05 Oct 15

a. 0.914 m
b. 0.523 m
c. 0.638 m
d. 0.814 m

ANSWER: 0.914 m

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