tion, fitted with a fireproof door and have a suitable floor drain connected to the sewer in order to meet the requirements of the Underwriters’ Association.
The main switchboard placed in some convenient point in the basement is usually constructed of slate or marble panels mounted on an angle iron frame set far enough from the wall to give working space behind the board. On the panels are mounted the switches, circuit breakers and instruments to control the distributing feeders to the various panelboards throughout the building. The bus-bars and connections for the feeders are placed on the back of the board and should be worked
out so that there will be no confusion in the arrangement or unnecessary joints. The size of the switchboard, the number of switches, circuit breakers and instruments are dependent upon the size and character of the hotel building and whether the current supply is taken from an outside source or from a generating plant within the building. Where alternating current is supplied to the building and a transformer vault is provided the switchboard can sometimes be placed directly outside of the transformer room wall and the control levers for the oil switches on the high tension lines can he mounted on the main switchboard.
The distribution system from the main switchhoard is, of course, very largely dependent upon
the size of the hotel. The number of panel boards to a floor varies with the floor area on the typical floors and with the departments or character and size of the main rooms on the public floors. In the working departments and public floors the panelboards are usually placed in such positions as are most practicable for access and so that the branch runs will not he too long. For the publicrooms the locations of panels are again dependent upon the size of the room and the general arrangement of the same. It is usually desirable to have a separate panel for a ballroom, for a main diningroom, for a grill room and so on, if these are sufficiently large to warrant the same. These panels
are placed in an inconspicuous location, as a passage just outside, so as not to mar the architecture of the room itself. Yet, if possible, they should be located in such a position that the room is visible by the person operating the boards, as for instance, just outside of a service door to a ballroom. These panels, in the working departments and public rooms, are very frequently used for the control of the lights and what is known as the safety type of panel is desirable for these locations.
On typical floors the panelboards are usually located in the corridors, preferly on a shaft so that the panels will be one above the other and the shaft then makes it possible to carry the feeders straight up and clown. Care should be used in
Electric Wiring Plan, Basement, The Niagara, Niagara Falls, N. Y.
The main switchboard placed in some convenient point in the basement is usually constructed of slate or marble panels mounted on an angle iron frame set far enough from the wall to give working space behind the board. On the panels are mounted the switches, circuit breakers and instruments to control the distributing feeders to the various panelboards throughout the building. The bus-bars and connections for the feeders are placed on the back of the board and should be worked
out so that there will be no confusion in the arrangement or unnecessary joints. The size of the switchboard, the number of switches, circuit breakers and instruments are dependent upon the size and character of the hotel building and whether the current supply is taken from an outside source or from a generating plant within the building. Where alternating current is supplied to the building and a transformer vault is provided the switchboard can sometimes be placed directly outside of the transformer room wall and the control levers for the oil switches on the high tension lines can he mounted on the main switchboard.
The distribution system from the main switchhoard is, of course, very largely dependent upon
the size of the hotel. The number of panel boards to a floor varies with the floor area on the typical floors and with the departments or character and size of the main rooms on the public floors. In the working departments and public floors the panelboards are usually placed in such positions as are most practicable for access and so that the branch runs will not he too long. For the publicrooms the locations of panels are again dependent upon the size of the room and the general arrangement of the same. It is usually desirable to have a separate panel for a ballroom, for a main diningroom, for a grill room and so on, if these are sufficiently large to warrant the same. These panels
are placed in an inconspicuous location, as a passage just outside, so as not to mar the architecture of the room itself. Yet, if possible, they should be located in such a position that the room is visible by the person operating the boards, as for instance, just outside of a service door to a ballroom. These panels, in the working departments and public rooms, are very frequently used for the control of the lights and what is known as the safety type of panel is desirable for these locations.
On typical floors the panelboards are usually located in the corridors, preferly on a shaft so that the panels will be one above the other and the shaft then makes it possible to carry the feeders straight up and clown. Care should be used in
Electric Wiring Plan, Basement, The Niagara, Niagara Falls, N. Y.