18th edition exam

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Mikey1959

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Does anybody know the formula to the question or the page to go to

The maximum measured ZS for BS3036  30A type fuse supplying a cooker circuit not incorporating socket outlet and on a TN system      

 
Table 41.2 (0.4 seconds) in the new book page 61 or table 41.4 (5 seconds) on page 63.

See 41.1 on page 59 for maximum disconnection times for earthing arrangements.

 
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