It seems clear from past posts here and other forums that code does not prohibit using a 15A switch to switch multiple 15A duplex receps as long as the load does not exceed 15A, even if the circuit breaker is rated 20A. So, how is that load calculated? Just figure one 500-watt fixture per room? The number of lumens required to light the room using n watts of incandescent lighting? Also the reason I am asking is that the 20A 1221-LHW are about $26 and the 15A 1201-LHW are about $20 each. Are they priced this way because there are physical differences in the switch or simply because they figure people who have larger loads will spend more because they have no choice?

well about 3/4 done with my addition wiring project! 24x30 2floors. some detail questions. in my master bedroom walk-in closet (9x11) , do same rules apply-can't be more than 6ft from receptacle? any advice on putting them in this closet? unfortunately I don't yet know how it is going to be laid out. just put at normal height as rest of them? I wish I knew layout so I could be sure they won't be hidden behind dressers or clothes but I don't. I am using the 20amp receptacle circuit from master bedroom for the receptacles in this closet. in master bedroom. trying to lay out receptacles on wall where I anticipate the bed and nightstands will be. should I try to place them in the space between the bed and nightstand on each side? or should they go behind nightstand but shifted near the edge so can access them. bathroom- height of receptacles over vanity. vanity height 34 1/2", counter 1 1/2", backsplash 4", tile floor maybe 1", space between top of backsplash and bottom of receptacle? so if I put them 2" above backsplash that would be 43" from subfloor. that sound right? one of the receptacles is going to be near the vanity overhead light switch (will be on opposite side of a stud with the light switch being on the outside vanity. the switch is set with bottom at 47", so do you think that would look strange to have a receptacle 4" below the light switch when they are so close together? wife said she wanted receptacle on each side of the bowls (that means two near center of the vanities between the two bowls and two on the outsides of the bowls). oh, and think I am mounting them vertically. just think I will like look better. although I think in kitchen will put horizontally due to lack of space in some areas. the kitchen will be done later. I know these are probably silly but I am trying to avoid the inevitable "I wish I had done it this way" for example, everyone has said to put boxs for fans in rooms. with recessed lights now the thing, you won't have a box in place if want a fan in future. I think that is good idea so I have added one to family room and to the office. even if I don't want it now, the box is there if need in future. and other advanced thinking ideas you might have would be appreciated.