there is a DB board fed from a centre tapped transformer only on single pole breakers. The board feeds instrumentation. Is there any issue changing it to 110v and tie the neutral to earth there is no socket outlets fed on this so can’t see it as an issue?
Could you be more specific about this? Is the system currently on the output of a 115-0-115 transformer, centre-tapped earth, or is it a 55-0-55 centre-tapped earth?
Do you know why the centre-tapped earth system was used in the first place? It could well be used for EMC, and therefore making it "single-ended" could cause issues with the instrumentation, in which case not a good idea.
However, if a centre-tapped earth system is used, the breakers would usually be selected to disconnect both line conductors?
Could you be more specific about this? Is the system currently on the output of a 115-0-115 transformer, centre-tapped earth, or is it a 55-0-55 centre-tapped earth?
Do you know why the centre-tapped earth system was used in the first place? It could well be used for EMC, and therefore making it "single-ended" could cause issues with the instrumentation, in which case not a good idea.
However, if a centre-tapped earth system is used, the breakers would usually be selected to disconnect both line conductors?
