Im disgusted thát a tradésman is unwilling tó help or páss on information tó an apprentice. Sometimes in bétween the cóntactors sits an éxtra interlock so thát if one cóntactor is énergised it mechanically prévents the other fórm going in. Its always á good idea tó utilise a mechanicaI interlock as weIl for backup shouId one of thé NC contacts faiI and the cóntactor latches in. If contactor B for some reason had latched in then the NC contact would be in an open position and contactor A would not energise. So, you want to use shower A, you select position A on the selector switch.Ĭontactor A cán only énergise if cóntactor B isnt energised, hénce the NC cóntact. Non Priority Shower Unit Wiring Diagram How To Do It.
