"PRIMARY WIRE RANGE AWG/KCMIL, OR STUD SIZE: 2/0-NUMBER 14. OPENINGS OR STUDS PER POLE: 1. SECONDARY WIRE RANGE AWG/KCMIL, OR STUD SIZE: NUMBER 4-14. OPENINGS OR STUDS PER POLE: 4. AMP RATING: CSA 185, UL 195. WIRE: COPPER (90 DEGREES C CU, 3 POLE). INSULATORS ARE GLASS-FILLED POLYCARBONATE."