Power supply to mains switch box
TN or TT mains are to be preferred
If the power supply system isn’t as shown above an isolation transformer is needed. Below are shown some examples of additional power supply system types using up to 480 VAC (phase to phase) where an isolation transformer is required
Examples
Legend | |
|---|---|
A | Factory power supply system |
B | Transformer |
C | Mains switch box |
Examples 1:
Examples 2:
Examples 3:
Examples 4:
Examples 5:
