ADC input using a current transformer?

[mister_e]

High likely you'll need at least to load your current transformer, do a search for Burden Resistor, there's a load of discussion/appnote all over the web.

http://www.coilwinder.com/current_tr...and_theory.htm
http://www.datatronics.com/pdf/curre...se_article.pdf
http://powerelectronics.com/mag/powe...t_transformer/

Probably not a bad idea to buffer the signal with an op-amp as well.

Not sure of the defaut DEFINE parameter for ADCIN, but you might need to include them to reach better results, or not use ADCIN and set/read PIC regsiters manually.... which is the method i prefer, but it's me

HTH