Toilet exhaust fan and switch

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If its remote how would you know its on with a SP switch???? Looks to see if the switch is in the up position??? If thats the case wire it so that the three ways will be up when its on???? Ad a pilot light??? Seems simple.
 
stickboy1375 said:
You need a relay.
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Or double throw switches.

I don't actually see how this will work with a single relay. Wouldn't you need 2 relays: one tied to each switch, with the output contacts in parallel?

2 double throw switches are cheaper and easier than 2 switches and 2 relays.

Steve
 
A simple solution would be to put in (1) relay to control the fan with a motion sensor in each restroom.Simular to the novatas lighting relay
Rick
 
Is this what you're trying to do?

bathfans.jpg


Both rooms will have an (DPST) on/off switch. Each switch turns on the light in it's respective room, as well as the fan. Neither switch will turn on the light in the other room.
 
steelersman said:
just a set of 3-way switches. Just like you would a light
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Until someone goes into one room, turns on the lights. Then someone enters the other room, and does nothing because the lights are on, and sits down. The first person leaves, then turns the lights off. Second person is sitting there in absolute darkness.
 
mikeames said:
If its remote how would you know its on with a SP switch???? Looks to see if the switch is in the up position??? If thats the case wire it so that the three ways will be up when its on???? Ad a pilot light??? Seems simple.
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you can't make 3-ways always up when they're on.
 
480sparky said:
Until someone goes into one room, turns on the lights. Then someone enters the other room, and does nothing because the lights are on, and sits down. The first person leaves, then turns the lights off. Second person is sitting there in absolute darkness.
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oh I thought that the toilets might have been in the same room
 
steve66 said:
The idea is to have one switch in the mens room, and one switch in the womens room. Each switch controls only the lights in the respective room. However, either switch will turn on the same exhaust fan.

Steve
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2 motion switches in each room. One for lights and the other for exhaust fan wired as a 3-way.
 
480sparky said:
Is this what you're trying to do?

bathfans.jpg


Both rooms will have an (DPST) on/off switch. Each switch turns on the light in it's respective room, as well as the fan. Neither switch will turn on the light in the other room.
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Bob has pointed out that you have paralleled conductors when both switches are on.
 
480sparky said:
I claim 310.4 Exc. 2(b).
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I would agree.

Note that in 08 it is now 310.4(A) Exception No.1 (b)

Roger
 
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roger said:
I would agree.

Note that in 08 it is now 310.4(A) Exception No.1 (b)

Roger
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Since it runs the fan, I not sure that qualifies as control power.

My opinion is that "in parallel when the swiches are on" is completely different than "in parallel". And nothing in the code prohibits this as long as each conductor is capable of carrying the full current.
 
steve66 said:
Since it runs the fan, I not sure that qualifies as control power.
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Steve, I think you are right.

steve66 said:
My opinion is that "in parallel when the swiches are on" is completely different than "in parallel". And nothing in the code prohibits this as long as each conductor is capable of carrying the full current.
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And I am of the same opinion and have stated it in some old "Ring Circuit" discussions.

Roger
 
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