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Contents
Selection and erection Cable entry Isolation and switching Protection against fault current Protection against electric shock Protection against overvoltage Building regulations Invicta Type B distribution boards Invicta Type B board rangeType A & B
distribution
boards
Manufacturers refer to Type A or Type B
distribution boards. This terminology refers to the
busbar arrangement and the type of overcurrent
protective device (OCPD) that it accepts.
Type A distribution boards have a busbar arrangement designed
to accept single and/or double pole OCPDs. They typically have
a horizontal busbar arrangement that accepts multi-pole and/or
single pole OCPDs.
Type B distribution boards have a busbar arrangement designed
to accept multi-pole and/or single pole OCPDs. They generally
have a vertical busbar with the OCPDs connected to the sides.