0
\$\begingroup\$

I'm having serious trouble understanding this. If a component burns out when too much current is flowing through it, then how does turning on all stove-tops to their full setting burn out the oven's wall-plug?

Shouldn't turning on all the stove-tops increase resistance as you're adding more components to the circuit? Can someone explain (in simple terms) why this happens, also referring to mains supply and wall plugs and series/parallel phenomena. A diagram would help too I guess.

\$\endgroup\$
  • \$\begingroup\$ Your question title seems incorrect. There is nothing in your post that suggests that your oven has burnt out or failed in any way. \$\endgroup\$ – Transistor Feb 22 at 11:17
  • \$\begingroup\$ Let me change it. \$\endgroup\$ – El Flea Feb 22 at 11:42
  • 1
    \$\begingroup\$ More resistances in parallel REDUCE the overall resistance. \$\endgroup\$ – Brian Drummond Feb 22 at 14:24
2
\$\begingroup\$

If a fuse burns out when too much current is flowing through it, then how does turning on all knobs to their full setting burn out the wall-plug?

Turning on more rings will draw more current (in the same way that turning on more water taps will draw more water current). If the wall-plug burns out then it is inadequate for the job.

Shouldn't turning on all knobs increase resistance as you're adding more components to the circuit?

No. Turning on more cooker rings adds more resistors in parallel and that decreases reseistance.

schematic

simulate this circuit – Schematic created using CircuitLab

Figure 1. Switching on additional heaters adds resistance in parallel. This reduces the overall resistance allowing more current to flow from the mains supply.

To understand how the power setting knobs work see my answer to Setting heat on electric stove.

| improve this answer | |
\$\endgroup\$
  • 2
    \$\begingroup\$ You are one hell of a genius. Thank you, Sir Transistor! \$\endgroup\$ – El Flea Feb 22 at 11:47

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.