The CT1248 by Electrohms is a High precision current sensor which is designed for energy metering and panel meters. For this model, it has a turn ratio of 1:1500 in terms of primary turns to secondary turns. The unit comes with an operating primary current of 0.05 to 10 A rms and a Burden resistance of 75 Ohms. For the resistance of secondary winding, it has a range of 45 to 60 Ohms. For its error in the operating primary current, it has 0.20% maximum amplitude error and a 0.50 Deg maximum phase error. Plus, its secondary termination is indicated in its board using a pin. On specific case such as fly heads, the secondary winding are terminated into hook up wire.