We have office building with (5) floors. Owner wants to add decorative lights for art work mounted on wall for each level. The electrical load for art work lighting around 300VA per floor, lights were specifed with 120V operating. We have one electrical panel on 1st floor to feed all art work lighting load.
Contractor propose to run (2) 120V circuits to feed all above lighting load.
1st circuit to take care (2) bottom floors lighting and 2nd circuit to serve the remain three top floor lighting. This building needs to meet LEED requirement, one of the requirement is "all lighting per floor need to be controlled independent of other floors and all lighting need to be automatic shut-off" when no people occupy".
We have a relay panel with integral time clock and relays that we can run circuits through it and satisfy above requirement. By running only two circuits as contractor suggest, circuit #1 shall control relay 1,2 (1st and 2nd floor lighting), circuit #2 shall control relay 3,4,5 (3rd, 4th, 5th floor lighting, respectively). The relay panel can be programmed to controlled each relay "on" and "off" separately.
Our feeling is if we keep each floor lighting on separate circuit it will be easier to maintenance the circuit, not to complicated with relay schemes, and if one circuit is cut, this won't affect other floor lighting which means we have to run (5) circuits instead of (2) as contractor suggest.
The difference in cost is around $1,400. Anyone has any suggestions about this?
Contractor propose to run (2) 120V circuits to feed all above lighting load.
1st circuit to take care (2) bottom floors lighting and 2nd circuit to serve the remain three top floor lighting. This building needs to meet LEED requirement, one of the requirement is "all lighting per floor need to be controlled independent of other floors and all lighting need to be automatic shut-off" when no people occupy".
We have a relay panel with integral time clock and relays that we can run circuits through it and satisfy above requirement. By running only two circuits as contractor suggest, circuit #1 shall control relay 1,2 (1st and 2nd floor lighting), circuit #2 shall control relay 3,4,5 (3rd, 4th, 5th floor lighting, respectively). The relay panel can be programmed to controlled each relay "on" and "off" separately.
Our feeling is if we keep each floor lighting on separate circuit it will be easier to maintenance the circuit, not to complicated with relay schemes, and if one circuit is cut, this won't affect other floor lighting which means we have to run (5) circuits instead of (2) as contractor suggest.
The difference in cost is around $1,400. Anyone has any suggestions about this?
