How many Parallel Resistive Loads I connect in a 110V branch?

[KuriousKid]

TL;DR Summary

Parallel connections of Heating Elements

This is to understand the situation, I'm not going to do this in real world.
This is already done in our Cooktops (refer image below). They come with 4 Cook tops with Nichrome heating elements. So my question is, how many Nichrome Heating Elements can be connected in parallel in 110 V socket at home? Considering each Heating element is 600W, 800, 1200 and 2000W, which makes it 4600W. When turned on simultaneously. Can I connect 10 or 20 or 30 Heating elements of 1000 Watt each in parallel? Trying to understand what is the limit and how we know the limit of 110V or 230 V sockets available in house.

 

[Averagesupernova]

Do you understand the relationship between watts volt and amps?

 

[KuriousKid]

Do you mean
V = IR
P = VI
?

 

[Baluncore]

Can I connect 10 or 20 or 30 Heating elements of 1000 Watt each in parallel?

No, not even 10.

For 230 volts, the maximum current from one outlet can be about 10 amps. That is only 230 volts * 10 amps = 2.3 kW. You could only connect two 1 kW elements.

For a 230 volt, wired in stove without the plug and socket, the limit is about 35 amp = 230 volt * 35 amp = 8 kW, so it would run eight of your 1 kW elements.

 

[KuriousKid]

So in US at 110 V, Single phase connection, how we can run so many things at once?
e.g. 4 Stove tops, Home heating, Fridge, Oven, Microwave etc. Sometimes some other stuff kicks in, so load at that time may go well above 8 kw for a large house.

 

[Baluncore]

So in US at 110 V, Single phase connection, how we can run so many things at once?
e.g. 4 Stove tops, Home heating, Fridge, Oven, Microwave etc. Sometimes some other stuff kicks in, so load at that time may go well above 8 kw for a large house.

So my question is, how many Nichrome Heating Elements can be connected in parallel in 110 V socket at home?

I don't believe you have all 8 kW running from a single socket. The house is probably supplied from a single distribution board, that supplies a fixed stove and many other separately fused power outlets.

 

[Borek]

The limit is not related to the resistors themselves, in theory you can connect infinite number of them.

That would be equivalent to short circuiting the supply and killing it.

My stove (note I am living in 240V EU country) has a total of around 8kW, but uses three phase connector.

 

[Tom.G]

Look in your fuse box or breaker box. There is probably a large double-breaker at the top of the box that turns off all power. 50Amp and 100Amp are common values.
Multiply that Current rating by the Voltage. This is the maximum wattage you can draw before this main breaker trips.

Now look at the individual breakers in the panel.
Add up the the Amp rating that is on each of them.

Multiply the total Amps by the line Voltage, this will tell you the maximum Watts your house is wired for.

The answer to your question of how many Watts you can draw is the lower of the two answers from the above multiplies.

Cheers,
Tom

 

[Baluncore]

(note I am living in 240V EU country)

That country no longer exists. While you were looking the other way, the EU changed to the 230 V international standard.
The voltage can be expected to range from about 215 V to 245 V.
Anything designed for 220 V to 240 V should work in the EU.

 

[Borek]

That country no longer exists. While you were looking the other way, the EU changed to the 230 V international standard.
The voltage can be expected to range from about 215 V to 245 V.
Anything designed for 220 V to 240 V should work in the EU.

Sigh, since I was born they moved me in every possible direction, usually without even asking. When I was a kid it was actually 220V and it was later changed, perhaps even more than once. Not that I care too much, my understanding is that these few volts at the end are within the tolerance of both supply and most devices I use.

But I do remember voltage stabilizers from my childhood, when the mains, especially in the rural areas, was hardly reliable.

 

[Averagesupernova]

In the USA the standard is 20 amp circuits for countertop/kitchen 120 volt receptacles. Most others in the house will be 15 amps. Since you seem to be familiar with the relationship between volts, amps, and watts you should be able to answer this question on your own. The cooktop you refer to is likely fed by a 240 volt 40 or perhaps 50 amp circuit if it is a unit with an oven as well. Maybe smaller if just a cooktop. Do the math....

 

[Vanadium 50]

since I was born they moved me in every possible direction, usually without even asking.

Tough break. Your country has also been drifting westward at maybe a mile per year over the last couple centuries. Stanadrds ain't what they used to be.

Now, if we could only get the world to agree on 60 Hz vs. 50 Hz.

 

[Borek]

Tough break. Your country has also been drifting westward at maybe a mile per year over the last couple centuries.

Sadly, recently it drifts back to the east.

Now, if we could only get the world to agree on 60 Hz vs. 50 Hz.

Or choose metric or imperial, once and for all.

 

[berkeman]

Mentor Note: Thread title edited to fix it up a bit.

from: "How many Parallel Resistors I can connect in 110V socket"

to: "How many Parallel Resistive Loads can I connect in a 110V branch?"

 

[Vanadium 50]

Sadly, recently it drifts back to the east.

I was talking geographically, not politically. But yes.