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In this video I show you how to prepare a two-phase muff for a 220 volt electrical service. #how to install #electricmuff #electricity #electricitytutorial #plumbingandelectricity Here I leave you the list of material that I used, in case the connection is single-phase the fifth terminal is not used. 1 Base for 100 Amp two-phase meter. 1 Fifth terminal 1 2X30 A switch box. 1 1/4 ”thick wall tube. 1 1/2” tube, green label, thin wall. 1 1/4” muff 1 3/4” nipple 2 3/4” American type connector 2 1/2 American type connector 1 3/4” to 1/2” bushing reduction 6 Meters of # 8 gauge cable, iusa or condumex brand, black color. 3 1 1/4” Omega clamp 2 1/2” Omega clamp 1 Bushing reduction from 1 1/4” to 3/4” 1 3/4” Condulet Tee 1 1.5 meter copper rod. 1 Copper rod connector. 1 White insulating tape.