Premature detonations increased to 14 percent for the fourth minelaying excursion; because some mines had been assembled with the more sensitive antenna fuze relay settings made by the Bureau of Ordnance.
2.
Since Italy won the 4 x 200 relay setting the new European record and Berbotto swum under 1 : 48.00 ( 1 : 47.87 ), Durante gave him an Alfa Brera.
3.
I r = is the ratio of the fault current to the relay setting current or a Plug Setting Multiplier . " Plug " is a reference from the electromechanical relay era and were available in discrete steps.