One line digram

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budkauai

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I need to make a one line diagram for a commercial building.
Single phase 208 - 240. Lighting calculation and one 50 amp heater and the regular plug outlets.
 
Good for you

Good for you

I am glad you have the opportunity to learn new things. Generating a one line diagram and lighting calculations will be an excellent learning experience.
 
budkauai said:
I need to make a one line diagram for a commercial building.
Single phase 208 - 240. Lighting calculation and one 50 amp heater and the regular plug outlets.
Click to expand...
WOW! 208 single phase? Hmm. One line diagram? Those are usually to show how a control circuit is controlling something, not for how a whole building is wired!! You'd better get a licensed electrician or electrical engineer.
 
Maybe you need an electrical riser diagram? Here's one that works for all occasions:

riser.gif
 
steelersman said:
WOW! 208 single phase? Hmm. One line diagram? Those are usually to show how a control circuit is controlling something, not for how a whole building is wired!! You'd better get a licensed electrician or electrical engineer.
Click to expand...

If you're going to bust someone, at least be right.
 
I've got a One-Line diagram of our plant. Starts at utility all the way to subs and busbars. Transformer impedances, cable sizing, lengths, as well as motor connected loads, breaker sizes. They're helpful when they start "moving furniture around".:grin:
 
steelersman said:
WOW! 208 single phase? Hmm. One line diagram? Those are usually to show how a control circuit is controlling something, not for how a whole building is wired!! You'd better get a licensed electrician or electrical engineer.
Click to expand...
One lines are used to show power distribution systems, however for a small system like this, "riser" drawings are more common.
 
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