Interior sign

[Danielt]

Does NEC 600 apply to interior signs? I don't see where it differs between interior and exterior. If a business is installing a small illuminated sign in a lobby, does it need a dedicated circuit per 600.5?

 

[readydave8]

Does NEC 600 apply to interior signs? I don't see where it differs between interior and exterior. If a business is installing a small illuminated sign in a lobby, does it need a dedicated circuit per 600.5?

my guess is no. I always thought requirement for dedicated circuit is there because of high likelyhood of sign being installed in future, often by non-electrician

so I think it says dedicated circuit has to be there, and doesn't say sign has to be on dedicated circuit

 

[Fred B]

Does NEC 600 apply to interior signs? I don't see where it differs between interior and exterior. If a business is installing a small illuminated sign in a lobby, does it need a dedicated circuit per 600.5?

600.1 does not make a differentiation between exterior or interior sign. Also implies that it covers all signs, but it might not be the specific type referenced in 600.5.
600.5 references outlet(s) for signage at each entrance to tenant space accessible by pedestrian traffic. Also says that each of these branch circuit(s) shall provide no other outlet(s).
600.6 requires each branch circuit supplying a sign be equipped with an externally operated switch or circuit breaker that opens all ungrounded conductors and controls no other load. Also meeting further requirements of 600.6(A) thru (B) as to location, accessibility, within sight,

So question is is this sign at an entrance into the tenant space? If not then it is not a sign related to or governed by 600.5, 600.6 requirements.
Is this signage related to or in a window? If so then it would be governed by added requirements related to a "show window" 210.62, 220.14(G), 220.43(A), 400.15, 410.14.

If this is signage similar to what might be found in a bar or restaurant such as advertising signage that is simply along a wall, your question as to "dedicated" circuit is simply "Will the circuit with the addition of this signage handle the added load?" This also might fit within the scope of 600.10 for portable or mobile sign with those specific criteria.

 

[Danielt]

600.1 does not make a differentiation between exterior or interior sign. Also implies that it covers all signs, but it might not be the specific type referenced in 600.5.
600.5 references outlet(s) for signage at each entrance to tenant space accessible by pedestrian traffic. Also says that each of these branch circuit(s) shall provide no other outlet(s).
600.6 requires each branch circuit supplying a sign be equipped with an externally operated switch or circuit breaker that opens all ungrounded conductors and controls no other load. Also meeting further requirements of 600.6(A) thru (B) as to location, accessibility, within sight,

So question is is this sign at an entrance into the tenant space? If not then it is not a sign related to or governed by 600.5, 600.6 requirements.
Is this signage related to or in a window? If so then it would be governed by added requirements related to a "show window" 210.62, 220.14(G), 220.43(A), 400.15, 410.14.

If this is signage similar to what might be found in a bar or restaurant such as advertising signage that is simply along a wall, your question as to "dedicated" circuit is simply "Will the circuit with the addition of this signage handle the added load?" This also might fit within the scope of 600.10 for portable or mobile sign with those specific criteria.

The sign in question is in a lobby of a doctor's office, on a wall. "At the entrance"? Is a lobby to a tenant space considered the entrance as a whole?

So the requirement of a dedicated branch circuit in 600.5 at entrances means 600 just applies to those locations on a structure? Does it apply to electric signs you see in airports or hospitals that are not at the entrances? I've seen more lit signs inside buildings.
It seems to me Art. 600 needs some clarification of scope.