LED Bulbs for Residential Purposes

Consult OSHA or Work Environment standards (local or international) for lighting. There is a standard of illuminance called foot-candle or lux for every type of facility. Go read some materials or google it atleast effort.

Ask the sellers of LED lighting.

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NEC and NFPA electrical codes as well as local code would address that.

NFPA Electrical Codes

NEC

New or older construction? If older, then simply insert the similar luminance LED bulb for each other lighting type. (IF fluorescent fixtures were used before, you must change out ballast and tubes. with whatever if presented in the conversion kit).

If new construction, then typically for the same general level of lighting Lumens/sq. m., then divide the space up by the light requirement, multiply by whatever factor is acceptable in local code (maybe 1.2), then install the number of LED fixtures per branch circuit that is permitted in local code per the breaker size. If 30 A breaker for lighting, then, then if you had 800 mA fixtures (LED bulbs), you would divide the 30 A by 0.8A, and get 37.5. Either cut one fixture in half (just kidding), or go ahead and round it down to the nearest even number (36), and go from there. Note: The code may require an additional safety factor to be considered in calculating the layout per circuit.

for 48" fixtures using T8 tubes there are drop-in replacements that require no other changes, ie they work great with the electronic ballasts for T8 fluorescents and use less power. Check with suppliers like Grainger.(not a recommendation but that's where we get ours)

" Older construction ".

My mom sold her house and bought a mobile home in a retirement community, there was a fluorescent fixture in her bathroom.

No exchanging ballast or tubes

I removed the fixture, tossed it in the trash ( recycle bin ) and simply wired in the new LED light fixture.

The standards (at least in the UK) don't relate to the bulbs, they relate to the outlets. An outlet may have an LED, fluorescent, or incandescent light bulb in it but the standard is designed that the installation is safe when used in accordance with a user's reasonable expectation. It's reasonable to expect someone may put an incandescent light bulb in a light socket so the standard is designed to cope with that.

Why would it not be 'SAFE', even if incandescent lamps (Bulbs get planted in the garden ) were to be installed? Surely not from an electrical point of view, as the installation would've been designed, installed and protected, to allow it to be safe in any condition. Now if you mean safe from the point of view of the lighting circuit being tripped, by overloading it with incandescent lamps. So causing there to be NO light and, this to be the unsafe condition, then that's a different matter.

<...NO light...unsafe...> in a residential situation can be prevented by the appropriate use of battery-backed lamp-holders.

"Surely not from an electrical point of view, as the installation would've been designed, installed and protected, to allow it to be safe in any condition".

So one hopes. The OP seemed to be asking whether there were different standards for LED bulbs (only just noticed s/he used "bulbs", not "lights", good catch) so I was trying to convey that the standard relates to the installation, not what you plug into it at the time it's built.

No sorry about the Bulbs/ Lamps thing. It just hit a chord with me and, made me chuckle. As I was an apprentice under an old mines engineer and, whenever he asked me what I'd been up to. I'd say I'd been changing the failed bulbs on the various equipment we had (as that was one of my apprentice tasks). He'd promptly give me a right roasting about them not being bulbs, "as bulbs get planted in the garden", but lamps. He was like that school master from the Pink Floyd song Another Brick in the Wall, "How can you have any pudding, if you don't eat your meat". I soon learnt the difference and, would only slip back to calling them Bulbs to wind him up and, then run a mile. It still makes me laugh now, even though it was nearly 30 years ago.

Are most replies missing your initial question? I think, being a one time commercial building lighting/power circuit designer, that what you are asking relates to a rule of thumb, such as we had here for 120V receptacles - no more than 6 per 20A circuit. Did you have a rule of 800 watts of lighting per circuit and now want to know how much LED lighting per circuit? If so, that is a bit strange, as we would load up lighting circuits to about 15A on a 20A breaker over here, but that was fluorescent lights, and pure lighting fixture load. (I see you are not in the USA as the voltage works out to 220V) Being residential, perhaps what you are saying is the circuits are mixed and up to 800 watts could be lighting and the rest is for convenience outlets. Yes? No?

The "points in a circuit" seems to be a localized terminology - can you explain that one?