P50 Agile P153    Chapter 2 - Safety Information 
 
 
 
Warning: 
The PCT is sometimes used to terminate cable screens. Always check the 
PCT’s integrity after adding or removing such earth connections.   
 
Warning: 
Use a locknut or similar mechanism to ensure the integrity of 
stud-connected PCTs. 
 
Caution: 
The recommended minimum PCT wire size is 2.5 mm² for countries whose 
mains supply is 230 V (e.g. Europe) and 3.3 mm² for countries whose mains 
supply is 110 V (e.g. North America). This may be superseded by local or 
country wiring regulations. 
For P60 products, the recommended minimum PCT wire size is 6 mm². See 
product documentation for details. 
 
Caution: 
The PCT connection must have low-inductance and be as short as possible. 
 
Caution: 
All connections to the equipment must have a defined potential. 
Connections that are pre-wired, but not used, should be earthed, or 
connected to a common grouped potential. 
 
3.6  PRE-ENERGISATION CHECKLIST 
 
 
Caution: 
Check voltage rating/polarity (rating label/equipment documentation). 
 
Caution: 
Check CT circuit rating (rating label) and integrity of connections. 
 
Caution: 
Check protective fuse or miniature circuit breaker (MCB) rating.