How many appliances can i connect to a single breaker?

BluePlanet

I have a double outlet in a room and i'd like to connect a number appliances to it.
such as:
Laptop
Monitor
Router
Speakers
Couple lamps
Desk Fan
Dehumidifier
Treadmill

How do i determine if this is too much?
It's a back shed/office space so bringing in more power on an additional breaker may not be very easy.

iwillhtfu

BluePlanet wrote: »

I have a double outlet in a room and i'd like to connect a number appliances to it.
such as:
Laptop
Monitor
Router
Speakers
Couple lamps
Desk Fan
Dehumidifier
Treadmill

How do i determine if this is too much?
It's a back shed/office space so bringing in more power on an additional breaker may not be very easy.

Find the power rating (watts) of each item an divide by 230 (voltage) and that's a starting point on what your current draw will be.

Then you'll need to find out if it's a dedicated circuit ran in or is it taped off of another circuit. If the later what else is on this circuit?

There are other factors aswell which this thread will likely get lost in, cable length, cable size, isolation, losses etc but tick off the easy ones above first and more answers will come.

I wouldn't be too worried about the smaller items it's the dehumidifier and treadmill will likely have the largest power rating.

In all likelyhood what you've listed should be fine but I would get some additional sockets added instead of using those multi leads.

Prev.

You can distribute to smaller loads no problem

The larger loads as said above, treadmill and dehumidifier you need to check the rating

BluePlanet

Once i find out the estimated draw, what is the capacity of the actual breaker?

iwillhtfu

BluePlanet wrote: »

Once i find out the estimated draw, what is the capacity of the actual breaker?

You'll have to see for yourself at your board. If a modern installation it could be 20A if an older board it could be a 16A fuse. The circuit to the shed could be coming off of a spur fused at 13A. How old is the house?

BluePlanet

iwillhtfu wrote: »

You'll have to see for yourself at your board. If a modern installation it could be 20A if an older board it could be a 16A fuse. The circuit to the shed could be coming off of a spur fused at 13A. How old is the house?

Well the house is very old but the electricity doesn't look too old.
The breaker says:
Hager
MV 120
B 20
230/400V

iwillhtfu

BluePlanet wrote: »

Well the house is very old but the electricity doesn't look too old.
The breaker says:
Hager
MV 120
B 20
230/400V

It's a 20A mcb so, Does anything else go off when you switch it off?

BluePlanet

iwillhtfu wrote: »

It's a 20A mcb so, Does anything else go off when you switch it off?

The breaker is for everything in the back garden.
Normally there's nothing on unless i switch something on, like garden lights or use an outlet for a power tool.

iwillhtfu

BluePlanet wrote: »

The breaker is for everything in the back garden.
Normally there's nothing on unless i switch something on, like garden lights or use an outlet for a power tool.

You should be good to go so. The house was likely rewired at some point and they must've allowed for power to the back garden/shed.

At a rough guesstimate your dehumidifier is probably less than 500w and treadmill less than 800w along with the other things you've mentioned I doubt you'll touch 10A.

I have similar set up less the dehumidifier and no issues on a stand alone circuit. As for the multi leads they should be fine as they're fused themselves probably at 13A and some will have surge protectors built in.

jumbone

20a breaker and in a shed is likely to be a radial

You can have up to 10 double sockets on a radial

jumbone

A double socket will be rated for 20 amps typically. They arent fused at 20a but you shouldnt pull more than 20a through it continuously. Although that advice is more pertinent in the case of say a 32a ring given that your breaker would trip with even a momentary 20a load