I have an electric shower head water heater. If you only have a cold water feed, it’s a great gizmo to have. The problem has been the proper current to operate it. It says it requires 110V 4800W 50A 50/60HZ

I installed it directly to my wall plug in bathroom. First it tripped my breakers. I stopped using it. The electrical wall plug felt hot too.

So, now I’m wondering what I have to do to use this thing. Is there like a mechanism, like converter or current stabilizer, that I could plug the shower head into instead of plugging it to the wall?

Running a separate cable directly to to my breakers is not an option. Also just installing a bigger breaker doesn’t seem like a good option either because my wall plug unit got hot.

Is there a product that could help me?



I am adding photos to clarify my issue. I would like an option to NOT having to run cable directly to box. I do admit it doesn’t seem likely that I have any option.

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  • 1
    Heating water takes a lot of energy, and if you are in the USA, our 120v power generally isn't up to the task for these instant point of use heaters unless a specific high-current circuit is run. Even if there was a device to cut the power usage of the heater, it would no longer heat the water (very much).
    – JPhi1618
    Nov 17 '21 at 20:10
  • 2
    Your wall plug is only for 1200 watts, it will get very hot trying it 4800w(flames hot). I am surprise it does not require 220/240 volt circuit. A picture or make and model of shower heater will help.
    – crip659
    Nov 17 '21 at 20:16
  • 4
    More information, please. Update your post with a model number or photos. That's a very odd set of specs. Most appliances that draw 50A are 240v. They certainly won't have a standard plug that would interface with a bathroom outlet. #danger #unregulatedgizmo
    – isherwood
    Nov 17 '21 at 20:26
  • only have a cold water feed ... what does that mean? ... why is it not possible to run a hot line?
    – jsotola
    Nov 17 '21 at 21:07
  • 2
    Can’t get there from here. Water heating takes way more power than common sockets have. Nov 17 '21 at 22:33

The thing draws 50A. There's no way it will work on any circuit that wasn't designed to supply (at least) 50A. So that means a separate cable back to the breaker panel, and a dedicated breaker. No magic stabilizer is going to get around that.

The only alternatives are going to be impractical, such as installing a large generator in the shower room.

  • 1
    It shouldn’t draw 50A at ~120V; at 4800W it should be 40A - needing a 50A circuit after 20% derating.
    – nobody
    Nov 17 '21 at 21:30

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