This project is here by released under the COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL).
Copyright (C) 2013 Stephen Makonin and contributors. All rights reserved.
This ammeter can measure up to 4 current transformers (CT). One CT per analog pin. Any CT that outputs 333 mV can be used, but that shield was tested with split-core CTS from DENT Instruments. We purchased the CTs from http://www.powermeterstore.com.