Modern
split-core transformers are easily installed, easily connectable
devices that can be attached to virtually all types of wiring
terminals. Preferably, a split-core transformer is attached to
electrical wiring by snapping the device around the conductor. High
quality split-core transformers—such as those produced by
Magnelab—have the highest standards in terms of interleaving joints
and self-locking mechanism. Typically, these products have a rated
accuracy of +- 1 percent between 10 and 130 percent of their graded
input.