Tap-off boxes for vertical busbar distribution

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I know of no requirement. If you tap box includes a disconnecting means you would need to comply with 404.8.
 
The question is if it is possible in one building to install tap-off boxes in each floor at different height
We have the following as example:
The top of tap-off box in Third floor is 1685 mm in forth floor 1585 mm in fifth floor 1485 mm in sixth floor 1885 mm in seventh floor 1785 mm in eight floor 1685 mm at roof 1585 mm
Is that is acceptable

Thanks
 
and my answer remains the same..... I know of no requirement to install the tap boxes at any specific height unless the tap boxes include a disconnecting means.
 
And if they include disconnecting means, that just limits the height above floor; other than that each floor can still be different.

Tapatalk!
 
In all electrical installation in building we erect similar devices at the same height in all rooms in all floors
for example lighting switches, receptacles, wall mounted luminaires, electrical distribution boards etc.......
Is that should apply to the tap-off boxes for vertical busbar distribution including disconnecting means ??
Thanks
 
Tap-off boxes for vertical busbar distribution including disconnecting means

Tap-off boxes for vertical busbar distribution including disconnecting means

Tap-off boxes for vertical busbar distribution including disconnecting means have to be easily reached for manipulation & maintenance purposes. Since they are usaully installed in a shaft and/or in an electric room, they need to be accessible. Installation height has to satisfy the a/m conditions
 
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