The Philippine Stock Exchange has adopted a three-phase circuit breaker as another layer to protect investors from what could still be a volatile market as the country battles the coronavirus ...

For example, a 30kVA step-down transformer, rated 480V-208/120V, 3-phase with primary and secondary OCPDs sized per Table 450.3(B), has a maximum rating of ... = 36A x 2.5 = 90.2A. Based on this ...