Votage Drop Calculation Branch cCircuit

[Dennis Alwon]

what is the formula for voltage drop?

Save yourself some trouble and use this online VD calculator

http://www.elec-toolbox.com/calculators/voltdrop.htm

 

[tryinghard]

Sorry, but I do not understand the question.

If you are asking about the performance of a load calculation, then (from Article 220) you assign 180 VA for each duplex receptacle.

How many general use receptacles would you install in a non-dwelling 20A circuit?

 

[Dennis Alwon]

How many general use receptacles would you install in a non-dwelling 20A circuit?

I would base it on 3 watts per sq. foot.

Try this link-- Mike Whitt makes a good case
http://forums.mikeholt.com/showthread.php?t=87868

 

[tryinghard]

I was suggesting 5 amps but I was giving that as an example. Yes I do agree that you are limited to 13 receptacles on a circuit.

Dennis, you need to change your vote to ?Yes, Art. 220 limits the number of receptacles in commercial.? at http://forums.mikeholt.com/showthread.php?t=87868

You've been converted

 

[tryinghard]

I would base it on 3 watts per sq. foot.

Thanks Dennis but I'm still looking forward to Charlies answer

 

[tryinghard]

Well Wireit as you can see some say you can install an infinite quantity of receptacles in a non-dwelling application, in saying this you really do not need to worry about your load and you certainly do not need to check voltage drop because you do not have a load. In fact now that you can install as many receptacles as you want the #10 is kind-a wasteful! But watch out it was probably specified during construction to be #10 or greater for receptacles past a certain distance, strange I wonder why?

I gota feeling the status quo is 180VA per receptacle especially in light of 210-11 which tells us to use this for our load. As you can guess I strongly suggest the 180VA per receptacle but again your client should qualify their use. At a minimum you should state your scope clearly on this matter and maybe include line items.