Best Answer

For USA, Canada and countries running a 60 Hz supply service.

1) An outlet for 240V is totally different from a regular 120V outlet.

2) The wiring for 240V is also much heavier than for 120V.

3) The double pole circuit breaker necessary for 240V is different to the single pole breaker used for 120V.

4) Anyway it is not clear why you would want to try to change a 240V outlet to a 120V type?

5) If you could log in and add some more details below here so we knew your reasoning for wanting this change to take place, someone may be able to assist you much further.


The reason why I need to do this is because there is only one 3-prong 240V outlet in the water heater closet feeding an inline water heater and I want to install an instant hot water recycling system which runs on 120v I so need the extra power outlet.


If you want to keep the existing 240V water heater then you cannot add another outlet to the circuit, not even a 240V one, let alone a 120V one!

The wiring and its circuit breaker is only rated to carry the current for one water heater and nothing else. If you add another appliance to the circuit you risk causing a house fire: the breaker may buzz but not trip so that the wiring gets hotter and hotter until something catches on fire!

So, if you are planning to buy a new hot water recycling system it surely deserves to be installed safely and correctly?

So why not, for your instant hot water recycling system, have a licensed electrician install a separate 120V circuit with the correct breaker, the correct-sized cable and the correct outlet near to the existing 240V outlet?


As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.




User Avatar

Wiki User

โˆ™ 2011-07-21 08:22:46
This answer is:
User Avatar
Study guides


20 cards

What type of circuit in which all parts are connected in a single loop

What angle is between 90 and 180

What condition has symptoms that include ringing buzzing or roaring in the ears or head

What is the transfer of energy as electromagnetic waves called

See all cards
12 Reviews

Add your answer:

Earn +20 pts
Q: How can you convert a 3-prong 240V appliance outlet to 120V without rewiring and replacing the outlet?
Write your answer...
Still have questions?
magnify glass
Related questions

How can you convert a 3 prong 240V appliance outlet to 120V without rewiring and replacing the outlet?

If you need to ask, you should have someone who knows how do it....

Is there a way to keep fog lights on when brights are on in a 1994 Chrysler Lhs?

Not without rewiring the lighting system.

What is it called when you cut down trees without replacing them?


How long can you leave a chicken without replacing its food?

You could leave a chicken without replacing its food for...2 days and a half.!!!!!!!!!! from:Karebare123_hey123

What is the probability that three times in a row without looking you can pick out an outmeal cookie without replacing them?

whats the probability that three times in a row without looking i can pick out an outmeal cookie without replacing them?

How much does it cost to run each appliance for one week?

Different appliances have different wattage draws. Without knowing the wattage of the appliance, an answer can not be given.

Can an espresso machine with a 20A 240V Leviton plug be powered without rewiring?

You need a dedicated circuit for that. You cannot power a 220V device off 110V.

Can you replace a 20 amp circuit breaker with a 30 or 40 on a 110 without rewiring it?

Absolutely not. If you do this then there are several problems that will not trip the breaker, but will set fire to your house.

Can a ring gear be replaced without replacing the pinion gear?


How many ways can you choose 2 books from the 6 on the shelf?

20, without replacing the first book chosen. 25 with replacing it.

Is drawing marbles from a bag without replacing them dependent or independent?


Can you put new rotors on without replacing brake pads?


People also asked