3 Way In Hallway

[A/A Fuel GTX]

I'm looking at 210.70 and don't see a requirement for 3 way switches in a residential hallway. Is it somewhere else or is there not a requirement?

 

[cpal]

I am not aware of such a requirment in the NEC

 

[iwire]

I agree with Charlie.

The same with other types of rooms as well, you could have a living room with 4 entrances and all that the NEC requires is one wall switch controlled lighting outlet.

 

[Rockyd]

Only location requirement that I'm aware of for three ways is 210.70(2)(c) but that is for more than six steps. 210.70 covers the whole issue.

 

[LarryFine]

The same with other types of rooms as well, you could have a living room with 4 entrances and all that the NEC requires is one wall switch controlled lighting outlet.

And, technically, that switch need not even be in that room, nor by a door.

 

[Jim W in Tampa]

Not required but if hall is long i would suggest it as a extra

 

[A/A Fuel GTX]

I always put three ways in hallways but I inherited a job that is already roughed in and rocked and no threes to be found.

 

[220/221]

I always put three ways in hallways but I inherited a job that is already roughed in and rocked and no threes to be found.

Good situation for a motion detector/switch

 

[arc-adian]

Dimmers

Dimmers

Are dimming switches required in residential. Is there a code stating some sort of requirement if there is?

 

[Jim W in Tampa]

I always put three ways in hallways but I inherited a job that is already roughed in and rocked and no threes to be found.

You could fish in a dead end 3 way if attic above or simply do without.

 

[480sparky]

Only location requirement that I'm aware of for three ways is 210.70(2)(c) but that is for more than six steps. 210.70 covers the whole issue.

3-ways are not required.

Are dimming switches required in residential. Is there a code stating some sort of requirement if there is?

No.

 

[SiddMartin]

Only location requirement that I'm aware of for three ways is 210.70(2)(c) but that is for more than six steps. 210.70 covers the whole issue.

just to clarify :grin:, NEC does not deal with 3 ways. 210.70 req. a switch for a light at the top and a switch for a light at the bottom. It does not req. them to be the same light or 3 ways. (but it would be stupid not to make them 3 ways.):grin:

edit; just saw 480's post

 

[e57]

Are dimming switches required in residential. Is there a code stating some sort of requirement if there is?

Some state and local energy codes require it, but nothing in the NEC.

e.g. CA title 24 part 6 (Either fluorescent or it has a dimmer...)

4.​

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Lighting other than in kitchens, bathrooms,
garages, laundry rooms and utility rooms. Permanently
installed luminaires located other than in kitchens,
bathrooms, garages, laundry rooms and utility
rooms shall be high efficacy luminaires.​

Exception 1 to Section 150 (k) 4: ​

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Permanently
installed luminaires that are not high efficacy
luminaires shall be allowed, provided they are controlled
by a dimmer switch.​

Exception 2 to Section 150 (k) 4:​

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Permanently
installed luminaires that are not high efficacy shall be
allowed, provided that they are controlled by an occupant
sensor(s) certified to comply with Section 119
(d). Such motion sensors shall not have a control that
allows the luminaire to be turned on automatically or
that has an override allowing the luminaire to be​

always on.