... 120~240VAC, Single phase,4 terminal,2 or 3 wire,Fix hub size:1/2",3/4",1" SYR-100A ... 40 75X39X43CM•100Amps,120/240V AC,Single phase,4 terminals,2 or 3 wire Copper Jaw,Copper or aluminum connector•The ... epoxy and polyester resins,which are baked on.Gray color exterior.•The current carrying parts are made of phosphor ... serrated surface.Stainless steel sealing ringFix hub size:1/2,3/4,1, meter socket