nss70 Posted November 2, 2020 Share Posted November 2, 2020 Curiosity question.( seen in DIY shop ) What do the markings mean on a standard single phase meter? e.g. " 15 (45)A " Is that a 15A or a 45A meter, and why the two different numbers? Link to comment Share on other sites More sharing options...
Crossy Posted November 2, 2020 Share Posted November 2, 2020 The first number is the calibration current (where it's most accurate), the second is the maximum current. In reality meters are incredibly robust, a 100% overload won't cause issues other than a loss of accuracy (bet they don't read low). Most 15/45 meters are on a 63A main breaker. 2 Link to comment Share on other sites More sharing options...
lopburi3 Posted November 2, 2020 Share Posted November 2, 2020 (edited) As above - the meter/service is called 15A Edited November 2, 2020 by lopburi3 Add 15/45 meter 1 Link to comment Share on other sites More sharing options...
nss70 Posted November 2, 2020 Author Share Posted November 2, 2020 Thank you gents. 1 Link to comment Share on other sites More sharing options...
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