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iMisspell 11-28-2008 11:49 PM

Spacing of high hats ?
 
The room will be a bedroom, size 12x16 8' walls, two 3x4' windows on one wall (16' wall) at each corner.
Walls have no color right now (just studded out) and have no idea what the finish color will be.
Floors will be oak, more then likely stained a some what dark shade.

The idea right now is...
- three rows stagger spaced in 4' then 3' from the walls
- five lights per-row 3' from end walls
- ceiling fan/light in middle
- two switchs (one toggle, one dimmer, third switch for fan).

Have the lights split between the two switchs like...
x = toggle
- = dimmer
bed at one end, tv at other end
Code:


  x  x  x

-    x    -

  x  o  x

-    x    -

  x  x  x

While im here...
How many lights can be on a single breaker (just lights (single bulb), no outlets) ?



Thanks for any help.

_

InPhase277 11-29-2008 08:52 AM

(fixture wattage/volts) = amps

dSilanskas 11-29-2008 07:27 PM

Just remember when your placing your lights not to go to close to where the fan will be installed or you will have a strobe effect when the fan is running:thumbup:

DangerMouse 11-29-2008 07:32 PM

my high hat is under my left foot, bass drum under right......

DM

KE2KB 11-29-2008 08:48 PM

To answer your question about number of lights on a breaker;
I don't think that the NEC states a maximum number of lights, or receptacles on a breaker; just that the wire size must be rated at least what the breaker is.

You should add up the wattages of all the lamps, then divide by 110 (or 115, your line voltage) to figure the current. I wouldn't want to load any breaker by more than 50% on a regular basis, but that's pretty much up to you.

FW

iMisspell 11-29-2008 09:02 PM

1 Attachment(s)
Starting to lay out some stuff right now will post back feed-back and or problems.

Quote:

Originally Posted by InPhase277 (Post 191382)
(fixture wattage/volts)x80% = amps

Thanks.


Quote:

Originally Posted by dSilanskas (Post 191540)
Just remember when your placing your lights not to go to close to where the fan will be installed or you will have a strobe effect when the fan is running:thumbup:

Unless a friend said something, dont think that would have ever popped into my head in till it happened. Thanks !


Quote:

Originally Posted by MdangermouseM (Post 191542)
my high hat is under my left foot, bass drum under right......

Southpaw here.
Old jam room... 12x18 barn-shed. Used to be able to get home from work at 12:30am and jam as long as we didn't get too crazy and no one complained (then again, maybe they where scared being it was 12:30 at night, lol).

iMisspell 11-29-2008 09:05 PM

Quote:

Originally Posted by KE2KB (Post 191562)
To answer your question about number of lights on a breaker;
I don't think that the NEC states a maximum number of lights, or receptacles on a breaker; just that the wire size must be rated at least what the breaker is.

You should add up the wattages of all the lamps, then divide by 110 (or 115, your line voltage) to figure the current. I wouldn't want to load any breaker by more than 50% on a regular basis, but that's pretty much up to you.

FW

Thanks...
For some reason i rember 70% but cant think of where i heard it.
Guess ill have to do some math now :)

InPhase277 11-29-2008 09:06 PM

Quote:

Originally Posted by KE2KB (Post 191562)
To answer your question about number of lights on a breaker;
I don't think that the NEC states a maximum number of lights, or receptacles on a breaker; just that the wire size must be rated at least what the breaker is.

You should add up the wattages of all the lamps, then divide by 110 (or 115, your line voltage) to figure the current. I wouldn't want to load any breaker by more than 50% on a regular basis, but that's pretty much up to you.

FW

No. All around, no. The NEC doesn't state the number of receptacles allowed, but it does place a limit for lighting circuits. The circuit must be sized to 125% of the load, therefore you cannot load a lighting circuit to more than 80% of the rating. And, as for line voltage, the NEC recognizes 120 V as a standard voltage, and I have never seen 110 or 115 volts on a normal circuit that wasn't heavily loaded. Voltage under normal circumstances will almost always be 120 or slightly more.

fixture wattage/volts = amps

I typed it wrong earlier. Circuit sizex80% = allowable amps

iMisspell 11-29-2008 09:12 PM

Quote:

Originally Posted by InPhase277 (Post 191567)
No. All around, no. The NEC doesn't state the number of receptacles allowed, but it does place a limit for lighting circuits. The circuit must be sized to 125% of the load, therefore you cannot load a lighting circuit to more than 80% of the rating. And, as for line voltage, the NEC recognizes 120 V as a standard voltage, and I have never seen 110 or 115 volts on a normal circuit that wasn't heavily loaded. Voltage under normal circumstances will almost always be 120 or slightly more.

fixture wattage/volts = amps

So.. do the math, reach 12amp and everything should be ok ?

With out checking anything, i was hopping to do the bedroom and two closets off one 15amp breaker.


_


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