I'm having a hard time understand ampere, power and voltage. I'm not a science student, but want to understand this basic thing.

The max power (I don't know if power is correct to say or not, but max 1200 W is written on it. So I guess this power) of my induction cooktop is 1200 W.

I have a Philips extension which have following written on its back:

6A 250V~ 1500W (Max).

So I assume this means: P = VI So 1500 W = 250V x 6A

It makes sense.

Now, Indian electricity comes at 220 V.

So in that case, my induction cooktop will have the following power relation, when I'm using it at its max power (i.e., 1200 W):

1200 W = 220 V x I I = 1200/220 I = 5.4 approx.

So let's say 5.4 A (ampere) (AM I CORRECT TO CONCLUDE THIS?)

Now, what I've written above is correct, I will assume this basic concept and meanings of voltage, ampere and power are somewhat clear to me.

Now, main question: According to extension specifications, I can use it for a load (is it called load?) of 1500 W. But my load (induction cooktop) is 300 W less, so technically there won't be any problem?

I've seen my friends who use extensions for coolers and they burst/damaged. I don't want that experience.

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Input power may be up to 10% higher than the output power load selected due to efficiency loss.

The heater will not have the surge current>500% at the startup of the ACU. Thus there should be no concerns with your grounded extension cord. It might feel slightly warm at best on max power.

  • \$\begingroup\$ Can you please clarify one more thing. I've somewhere that this laptop charger has this much voltage or it is of N number of volts. What does it mean? I thought voltage is of electricity? \$\endgroup\$
    – Vikas
    May 7 '20 at 23:03
  • \$\begingroup\$ Power = Volts x Amps \$\endgroup\$ May 7 '20 at 23:08
  • \$\begingroup\$ I know this. But does it mean they are actually talking about the power of the charger and just said it indirectly? Like I can say my induction cooktop is of 220V? \$\endgroup\$
    – Vikas
    May 7 '20 at 23:16
  • \$\begingroup\$ The label will have the AC power or current and voltage for max load as well on the DC side. \$\endgroup\$ May 7 '20 at 23:20
  • \$\begingroup\$ Tony little difficult for me to understand this. \$\endgroup\$
    – Vikas
    May 7 '20 at 23:21

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