Leviton Current Transformers (CTs) support our full line of revenue-grade meters and help meet all measurement and verification-based opportunities - including smart metering, load management and LEED rating achievement. Designed as part of a simple and effective process for accurately capturing measurements and power consumption CTs are easy to specify and install for new construction and retrofits. The better the equipment, the better the measurement. CTs come as solid core standard for high-quality, long-term accuracy and reliability. Standard solid core CT's look like ring-shaped devices that slip over power lines to measure the electrical current flowing through the line. The CT "secondary" wires connect to the meter, facilitating power and energy calculations. They are compact amp; cost effective. Solid core CTs are accurate (0.3% max error), and less susceptible to damage during installation. For installation, power must be de-energized and the circuit opened, in order to slip the CT over the power line. After installation the power wire must be reconnected to close the electrical circuit. 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, Net Metering, Energy conservation and cost reduction, Green building initiatives and Government mandates. They snap shut securely for fast, precise installation with no need for time-consuming tie wraps and no worries about improper seating, separation or risk of oxidation Revenue-grade current transformers (CT's) provide superior accuracy over current sensor designs Competing products use current sensors that do not provide the same level of performance Conforms to all applicable standards of ANSI C12.1 and ANSI C12.20 (0.5) Codes for Electricity Metering