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    By Miles Nicholson 

    Whilst AutoCAD Electrical has a very comprehensive symbol library, it doesn’t have a 4 pole isolator defined in the library or a 3-pole isolator plus neutral as some examples of 4-pole devices.

    These could be made up of a 3 pole and an extra contact or neutral link but this means that each time you want to use this type of device you would have to place the extra symbol down.

    Any combination of symbols can be created as a multi‐pole device.