Illinois Society of Architects · Chicago · leaf 390
blade of all 3-pole switches exceptfor 3-phase. On 3-phasc installations thetwo phases having the least difference ofliolential to earth must be connected to thetwo outer blades of the service-switch. 4. Switches and fuse blocks must not beinstalled above or in close proximity tolaundry tubs,…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.