Bulk Workwear - Clothing Suppliers for the Whole Forum Network
This official sponsor may provide discounts for members

Discuss Multiple USB outlets in restaurant in the Electrical Forum area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

Hi everyone
I'm busy rewiring a restaurant and the customer has asked for USB outlets at each table. I think it's a terrible idea - I'd be happy for my phone to go flat when eating out - but that's not the point! The type he has asked for are just USB outlets and not the ones combined with 13 amp sockets and there are 13 of them to be installed.
My question is what sort of loading could potentially be on them? They say the output is 2.1 amps and 5 volts so is it a simple case of that being 10.5 watts therefore 10.5/230=0.0456 amps?
Thanks
 
Electrical2Go - Online Electrical Supplier
This official sponsor may provide discounts for members

telectrix

-
Mentor
Arms
Esteemed
10.5 watts is correct for 1 usb. when you have 13 that's 136.5 watts. no problem at 230V but if you step down to a 5V common supply, it's 27A @ 5V.
 

littlespark

-
Arms
Esteemed
Where you been, Streamer?

I’d separate them up a bit. Ie, not all on the one rcd. They always seem to cause problems.
 
  • Thread Starter Thread Starter
  • #4
Thanks @telectrix, that's what I thought. They are 230v input so the most that can be drawn on the circuit is 136.5 watts.
Post automatically merged:

Where you been, Streamer?

I’d separate them up a bit. Ie, not all on the one rcd. They always seem to cause problems.
I've been hiding! I've actually moved from sunny Coldstream to the big smoke of Glasgow, just finding my feet here and trying to get a few jobs in.
 
  • Thread Starter Thread Starter
  • #6
Got any jobs needing finished over this side of the country?
Not really, I had a mad couple of months before I moved trying to tidy things up, and then the lock down made things even more complicated. But I've had a good few weeks working on the new house and garden and now just getting some work in over here. Are you keeping busy enough?
 

littlespark

-
Arms
Esteemed
Just started back last couple of weeks. Odd days here an
A lot of my ongoing jobs are still to go back to, customers are wary.
Couldnt get any SE income support, so had to claim UC.
 

davesparks

-
Mentor
Arms
Esteemed
My question is what sort of loading could potentially be on them? They say the output is 2.1 amps and 5 volts so is it a simple case of that being 10.5 watts therefore 10.5/230=0.0456 amps?
Thanks
Yes, but you should allow a little for inefficiencies in the transformation/rectification etc.
But either way it adds up to a couple of hundred Watts total.

Depending on exactly how things are being installed I'd be inclined towards running a 6A circuit to feed them. Otherwise put them on a general socket circuit via FCU's
 
  • Thread Starter Thread Starter
  • #9
Thanks everyone for the replies. Helpful as always:)
 
Aico Carbon Monoxide Detectors
This official sponsor may provide discounts for members

Reply to Multiple USB outlets in restaurant in the Electrical Forum area at ElectriciansForums.net

Top Bottom