Which electrode polarity produces higher penetration in mig welding among following? 1.Dcep 2.Dcen 3.Ac

DCEP gives deep penetration

In MIG welding the wire is always positive...

You cannot use other polariries...

DCEP GIVES DEEP PENTERATION. DCEN NOT POSSIBLE

DIRECT CURRENT ELECTRODE POSITIVE GIVES BETTER PENETRATION IN MIG WELDING 

 Direct Current Electropositive DCEP, also called reversed polarity

DCEP POLARITY PRODUCES HIGHER PENETRATION

Direct Current Electropositive DCEP

DCep electrode produces higher penetration in mig welding

Direct current electorade (DCEN)

USUALLY IN WELDING DC+VE GIVE HIGH PENTRATION AND LOW DEPOSITION 

SO I PREFFER DCEP

DIRECT CURRENT ELECTRODE NEGATIVE