Drawing symbolls

[FIFTHTEXAS]

Hi

can anyone tell me if there is a british standrds for drawing symbols for electrical, fire, security, lighting etc. Sen so many differnt ones to use and is there a web site i can go on that would show me the correct symbols i should use.

 

Thanks

[ReMark]

Knowing the Brits there has to be a standard somewhere they some agency will only be too glad to sell you.

[sarah]

I have found this link useful....

 

The British Standards - ISO drawing aids

 

http://www.roymech.co.uk/Useful_Tables/Drawing/Drawing.html#BS8888kit

 

hope it helps

[ReMark]

BS8888 does not include the symbols that FIFTHTEXAS is inquiring about. It is more about general practices.

[dbroada]

the standards body that is happy to sell you their wares is indeed, the British Standards Institute or BSI. As ReMark rightly says BS8888, which comes in many parts covers draughting practices and is (IIRC) a more up to date version of BS308 which most older draughtsmen are very familiar with.

 

I am not at work ATM so I can't be definitive but I think you need BS EN 60617 for the graphical symbol drawings. Again many parts - 10 I think although this covers all electrical disciplines and so has more symbols that you will ever need, and most of the are slight variations on a standard symbol. for instance, we only use the symbol for a normally open contact but we could also modify it to show how it is held open.

[sarah]

Ok, in that case ReMark you are probably correct. BSI shop will sell them to you.

[ReMark]

AutoCAD Electrical 2010 references the IEC Standard (Europe) for their electrical schematics. Dave: Is this the standard you follow?

[ReMark]

I think more people and companies would follow these standards if they were easier to obtain and not so costly to begin with.

[dbroada]

I have yet to discuss this with my boss (should be returning to work soon) but we "generally" draw to BSI symbols which should be pretty closely aligned with IEC. I have only used electrical with IEC and will be recommending that we make all new drawings to the supplied IEC symbol set. There are only detail differences between the ACADE IEC symbols and our own library set but they do look very different due to how we use thicker lines to make them stand out. Once the others have had their electrical training we can formulate our approach (if I can remember how to drive electrical when I get back).

[dbroada]

I think more people and companies would follow these standards if they were easier to obtain and not so costly to begin with.

I can't say I like the cost of these symbols but it is rather a small price compared to rewiring an oil rig just because the supplied drawings don't use a standard symbol set. I know I have made mistakes when working with USA symbols as I always misread relays!

[Tankman]

You might try looking here http://www.cadforum.cz/catalog_en/?q=symbols .

[dbroada]

You might try looking here http://www.cadforum.cz/catalog_en/?q=symbols .

although the selection I looked through were from various standards rather than one standard symbol set

[foster8]

Would you rotate the symbols anti-clockwise or clockwise..?? if added them on a drawing in a horizontal line..

Cheers

[ReMark]

What symbols are you talking about?

 

You can choose to rotate a symbol clockwise or counter-clockwise. Keep in mind that AutoCAD assumes 0 degrees is in an easterly direction and 90 degrees would be in a northerly direction (subsequently west = 180 degrees and south = 270 degrees).

[foster8]

I'm refering to contacts, normally open and normally closed. I rotate them counter-clockwise as BS 61082-1:2006, but others say the opposite is true...

[ReMark]

I'm refering to contacts, normally open and normally closed. I rotate them counter-clockwise as BS 61082-1:2006, but others say the opposite is true...

You do realize you have made your "observations" in a thread about where to find symbols don't you? The discussion is not about how to rotate them. But thanks for the input.