markjkubicki
Member
- Location
- New York City
What's the official on this (if there is one); it's the same issue that occasionally occurred with low voltage lighting using remote power supplies, but with the proliferation of LED lighting, has become exponentially more of an issue?
The code defines a lighting fixture as a complete system: including the light source, its housing, its power supply, and everything in between...
this includes remote power supplies.
The Electrical Engineer says: "yes, I'm responsible for power distribution ... to the light fixture, after that, it's out of my hands." (i.e. when a fixture has a remote power supply, I'm not doing the low voltage cabling between the remote power supply units (PSUs) / (drivers) and the fixtures. (this occasionally can be a substantial task.)
The Lighting Designer says: the connection between the PSUs and the fixture is power, and the issue is how it is distributed (what gauge wire, run in what manner, etc.); in other words, it is "power distribution", and as such, is something that needs to be submitted by a licensed Electrical Engineer (and sealed on the drawings). Consequently it is not the responsibility of the the LD, but of the EE who is licensed (in other words: "not us")"
(...I've know many, many LDs and never have i heard of one, except when affiliated with a larger MEP Firm, where any license is kept, never mind one acceptable to the relevant jurisdiction.)
This is becoming a huge bone of contention, and at best a disputable scope -gap that irritates (to say the least) the owner's rep.
Any thought, reflections, or further direction would be held in high esteem.
Mark
The code defines a lighting fixture as a complete system: including the light source, its housing, its power supply, and everything in between...
this includes remote power supplies.
The Electrical Engineer says: "yes, I'm responsible for power distribution ... to the light fixture, after that, it's out of my hands." (i.e. when a fixture has a remote power supply, I'm not doing the low voltage cabling between the remote power supply units (PSUs) / (drivers) and the fixtures. (this occasionally can be a substantial task.)
The Lighting Designer says: the connection between the PSUs and the fixture is power, and the issue is how it is distributed (what gauge wire, run in what manner, etc.); in other words, it is "power distribution", and as such, is something that needs to be submitted by a licensed Electrical Engineer (and sealed on the drawings). Consequently it is not the responsibility of the the LD, but of the EE who is licensed (in other words: "not us")"
(...I've know many, many LDs and never have i heard of one, except when affiliated with a larger MEP Firm, where any license is kept, never mind one acceptable to the relevant jurisdiction.)
This is becoming a huge bone of contention, and at best a disputable scope -gap that irritates (to say the least) the owner's rep.
Any thought, reflections, or further direction would be held in high esteem.
Mark