Sydney’s electric trams from A-Z. L/P Class With the materials and manpower shortages caused by the Great War delaying the NSWGT plans for construction of new P Class trams, the Tramways turned its attention to rebuilding lower capacity tramcars already in the fleet. Accordingly, just 3 months after O/P Class 1170 emerged from Randwick Workshops the first of the L/P Class, No. 274 entered service. The L/P Class were a ‘rebuild’ of the 55 seat L Class into a 70 seat crossbench tram in the P Class