If a 25mm metal pattress, with standard 20mm knockouts, is set into a brick wall, to allow the installation of a standard domestic electrical socket, does the conduit need to be 20mm round conduit? That is, conduit running from floor inside wall up to socket.
Was wondering if conduit of a lesser diameter, (or perhaps a square/rectangular shape) could be used to allow less tracking into wall?
Thanks.
Was wondering if conduit of a lesser diameter, (or perhaps a square/rectangular shape) could be used to allow less tracking into wall?
Thanks.