When using an isolation transformer in a control panel. in this case for a motor heater, I think I should probably tie 0V to earth within the control panel.
- I would also like to protect the secondary, however what are the rules here, do you have to provide 2P MCB?
-Obviously I have an upstream 2P MCB of the transformer.
- I would think its perfectly OK to use only a single pole on MCB on the line side output of the transformer?
Does anybody have any comments on this?