Table:
text: British Rail Class 08
Design variations
Design variations
TOPS_design_code Electrical_system Max_speed Weight Brakes Route_availability Notes_
08-0LX 110 V 15 mph (24 km/h) 50.4 te (502 kN) dual 5 Scharfenberg adapter fitted
08-0MA 110 V 15 mph (24 km/h) 49.8 te (496 kN) air 5 
08-0NA 90 V 15 mph (24 km/h) 49.8 te (496 kN) air 5 fitted with Buckeye couplings
08-0PA 90 V 15 mph (24 km/h) 51 te (508 kN) air 6 fitted with Buckeye couplings
08-0QA 90 V 15 mph (24 km/h) 51 te (508 kN) air 6 fitted with Buckeye couplings
08-0RA 110 V 15 mph (24 km/h) 51 te (508 kN) air 6 fitted with Buckeye couplings
08-0SA 110 V 15 mph (24 km/h) 49 te (488 kN) air 6 

text: British Rail Class 08
Design variations
Design variations
TOPS_design_code Electrical_system Max_speed Weight Brakes Route_availability Notes_
08-0AV 90 V 20 mph (32 km/h) 49.8 te (496 kN) vacuum 5 
08-0BX 110 V 20 mph (32 km/h) 50.4 te (502 kN) dual 5 
08-0CA 90 V 20 mph (32 km/h) 49.6 te (494 kN) air 5 
08-0DV 90 V 15 mph (24 km/h) 49.8 te (496 kN) vacuum 5 
08-0BX 90 V 15 mph (24 km/h) 50.4 te (502 kN) dual 5 
08-0FA 90 V 15 mph (24 km/h) 49.6 te (494 kN) air 5 
08-0KX 110 V 15 mph (24 km/h) 50.4 te (502 kN) dual 5

Question: How often is 90v listed as an electrical system in British Rail Class 08?

Question: How many Class 08 models which voltage is 90V among British Rail Class 08 models?