I've not worked as a commercial electrician, but did for a couple of years work in residentical new construction. Other than a kitchen (by today's standards that is) there is no rule on how to assign outlets to circuits. Kitchens TODAY the outlets have to alternate circuits as you go around your counter.
Otherwise, 10 outlets or lights can be on one 15a circuit (rule of thumb) and well, whatever is convenient or cheapest or fastest is what is built/wired. If you've had a house and wondered why teh basement ights are on the same circuit as the first floor outlets, or the outlet in the hall is on with the bedroom on the opposite side of the wall this is why.
So if you see a quad outlet 99% of the time it's all the same circuit.
If you see 2 outlets on the same wall - same circuit.
Newer venues, truly commercial ones (say a 10 year old hotel) are probably fine, wired to today's standards.
A 50 year old hotel or vfw or such? Doubtful.
It's only been since maybe 1996 that elec codes have gotten truly involved. When I worked i the early-mid 2000's a typical 3 BR 2 bath house would have 25 circuits in it. My 1937 house, with 2 elec updates/re-wiring and a kitchen/elec panel from 1986 has maybe 10 or 12 - and I put in 3 of those.
Used to be one circuit in a kitched was fine. Now..the microwave, disposal, fridge, stove, overhead light all need their own dedicated 20a circuit PLUS 2 more GFI counter circuits - 7 just for one room. And the dining room these days - 20a for wall sockets and lighting on a different one.
My second floor has ONE circuit for everything. Today? Celing lighting on a diff circuit than wall outlets, each BR on it's own arc fault circuit, the bathroom needs it's own gfi 20a outlet - so 5 minimum today.
But then they've added so many new outlets/requirements - like an outlet within 2' of an entrance to a room, no more than 12' between outlets in a room, 3 way switches. lights/outlets near furnaces and in attics, lights/outlets near exterior doors on the outside of buildings, the type of covers on those outlets, etc.
And I've not read it to see the updates/changes...if you're really bored though...Changes to the 2017 NEC - NFPA - (https://www.nfpa.org/NEC/About-the-NEC/Changes-to-the-2017-NEC)
Otherwise, 10 outlets or lights can be on one 15a circuit (rule of thumb) and well, whatever is convenient or cheapest or fastest is what is built/wired. If you've had a house and wondered why teh basement ights are on the same circuit as the first floor outlets, or the outlet in the hall is on with the bedroom on the opposite side of the wall this is why.
So if you see a quad outlet 99% of the time it's all the same circuit.
If you see 2 outlets on the same wall - same circuit.
Newer venues, truly commercial ones (say a 10 year old hotel) are probably fine, wired to today's standards.
A 50 year old hotel or vfw or such? Doubtful.
It's only been since maybe 1996 that elec codes have gotten truly involved. When I worked i the early-mid 2000's a typical 3 BR 2 bath house would have 25 circuits in it. My 1937 house, with 2 elec updates/re-wiring and a kitchen/elec panel from 1986 has maybe 10 or 12 - and I put in 3 of those.
Used to be one circuit in a kitched was fine. Now..the microwave, disposal, fridge, stove, overhead light all need their own dedicated 20a circuit PLUS 2 more GFI counter circuits - 7 just for one room. And the dining room these days - 20a for wall sockets and lighting on a different one.
My second floor has ONE circuit for everything. Today? Celing lighting on a diff circuit than wall outlets, each BR on it's own arc fault circuit, the bathroom needs it's own gfi 20a outlet - so 5 minimum today.
But then they've added so many new outlets/requirements - like an outlet within 2' of an entrance to a room, no more than 12' between outlets in a room, 3 way switches. lights/outlets near furnaces and in attics, lights/outlets near exterior doors on the outside of buildings, the type of covers on those outlets, etc.
And I've not read it to see the updates/changes...if you're really bored though...Changes to the 2017 NEC - NFPA - (https://www.nfpa.org/NEC/About-the-NEC/Changes-to-the-2017-NEC)