lighting wiring

J

jeffm2

Member
Location
Cary, nc
Occupation
Electrical engineer
Hi,
I am new in the MEP field and I have a question about lighting. I was told that the tick marks in a lighting plan represent the number of conductors. How do I know when to show the tick marks and when not to?
 
Personally I don't like the tick marks as there are other (IMO better) ways to identify what the circuits are on the drawing. We usually have a dashed box around each area that contains a single lighting circuit with a note as to the circuit designation. If you had a simple two wire circuit you could just put two tick marks on all of the connections.
 
infinity said:
Personally I don't like the tick marks as there are other (IMO better) ways to identify what the circuits are on the drawing. We usually have a dashed box around each area that contains a single lighting circuit with a note as to the circuit designation. If you had a simple two wire circuit you could just put two tick marks on all of the connections.
Click to expand...
Around here it was a half tick mark for a neutral and full marks for ungrounded conductors. At least is was a long time ago, has been a very long time since I did any commercial work from prints.
 
infinity said:
Personally I don't like the tick marks as there are other (IMO better) ways to identify what the circuits are on the drawing. We usually have a dashed box around each area that contains a single lighting circuit with a note as to the circuit designation. If you had a simple two wire circuit you could just put two tick marks on all of the connections.
Click to expand...

You're not the only one who does not like them. I read that some electricians don't follow all of them, which makes me think that the tick marks only give them an idea of what the circuit should look like. But they are not always accurate.
 
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