Leviton CDE01-L11 Sub-Metering Current Transformer, 100A, 100:0.1A, 0.67-Inch, Blue For use with any 100-Amp meter Use current transformers in commercial, institutional, industrial and government applications To support load profiling and benchmarking, BAS integration, power quality analysis, usage aggregation, tenant cost allocation, measurement and verification, energy conservation and cost reduction and green building initiatives and Government mandates Standard solid core CTs look like ring-shaped devices that slip over power lines to measure the electrical current flowing through the line Solid core CTs are accurate (0.3-percent maximum error), and less susceptible to damage during installation