Unkown symbols

[toolbox212121]

I have to take a test every 6 months at work for promotion. Every time there are questions about symbols no one knows about. I've found most of them in TIA/EIA 606 but the rest I'm lost. I did a rough drawing with paint and posted it online here

http://www.mediafire.com/i/?r1cejt1q01wyfg6

. Where would I find these symbols and others like it? Any help is appreciated. Thanks.

 

[Textron68]

Google: electrical symbols
On your diagram:
1. Rectangel with cross line - Recessed Flourescent
2. Rectangel with half fill - Flourescent on Emergency Circuit
3. Filled Rectangel - Foutescent on Critical Branch Circuit
4. X - Exit Light

 

[OzzieGeorge]

Sorry but with due respect, they are not Telephony symbols! If this is to gain promotion in a telephon field, you are working for the wrong employer!

 

[toolbox212121]

HAHA Ozzie your telling me its the military. I'm sure they want us to know the symbols so we can read blue prints to plan the location of drops. We have to be able to look at plans for new installs and put our seal of approval to make sure drops aren't planned to close to lights. I'm not sure why they want us to know this but they do. LOL

Textron, are these NEC symbols or just basic autoCAD stuff? Thanks

 

[kwbMitel]

Do you have access to the internet from where you are?

If so, take the earlier advice - Use Google - Search term(s) Electrical Symbols.

They are standard symbols.

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What's most important is that you realise ... There is no spoon.

 

[donb01]

I would agree that the employer would want the employee doing telecom/data to be able to read the standard E.X drawings on a facility blueprint in order to best locate the drops to avoid interference or avoid equipment that may be mounted on the wall or positioned to block access to drops, and also to locate data drops next to power receptacles of the right type, etc.

I have done some pretty significant construction management for my company in addition to all of the telecom network design and some of the data design, and knowing how to read the prints is a wonderful advantage - plus I actually keep copies of the electrical prints in a form I can manipulate on my computer to help me locate new drops, or do estimating if I can see there is already a drop stubbed out in the area, or an empty box, or even to see if an area has a solid ceiling or soffit that will make running the cable more of a PITA.

Typically you will find one or more sheets in the package of blueprints for your building that has a listing of all of the most commonly used symbols, but as said above your should be able to google for a reference sheet of them as well.

 

[Textron68]

The symbols are standard. Flourescents are important for phone techs to know due to the troubles they cause on both phone and data circuits. Other electrical symbols are important for installation planning to insure power is available where it's needed. Also in the military there are rules of seperation in reguards to crypto installations for security reasons. Other testable blueprint info to look for are firewall and firewall protrusion points.

 

[Westi]

the new fluorescent lights with the electronic ballast are having next to no influence on the cabling any more. Take your wand and hold it to an old light and then to a new light and you will notice the difference.
I for one like stuff like that and if my employer would pay me to know that stuff I would be rather happy about it, but I read manuals for fun so I might be a bit odd.

Joe W.

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