24-11-2015, 04:54 PM
(11-02-2015, 12:07 PM)Skywave Wrote:(11-02-2015, 11:36 AM)raylec Wrote: An isolating transformer only feeds one piece of apparatus which must not be connected to any earth.
From an earlier post of mine:
That transformer is internally configured for 120v. - 0v. - 120v. bi-phase output with the 'E' / 0v. centre point connected to supply earth inside the commercially-built isolation transformer unit which has full Government electrical safety approval.
Note: That 'earth through' arrangement has now been disconnected my me.
Al.
These power tool transformers are 110-0-110 centre tap to earth, THEY ARE NOT ISOLATING TRANSFORMERS! they comply with IEE regs for electricity supplies, since all supplies of electricity must be earthed for safety.
