Wattage requirement for step-up transformer

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SUMMARY

The discussion centers on the wattage requirements for using a step-up transformer to power a 20 amp, 240v portable electric heater rated at 4000 watts from a standard 110/120v outlet. Participants recommend a 6000 watt transformer for safety and efficiency, while cautioning that the existing home wiring may not support such a setup. Alternatives suggested include using multiple 1500 watt space heaters plugged into separate circuits instead of relying on a transformer. The feasibility of this approach is questioned, highlighting the importance of adhering to electrical safety standards.

PREREQUISITES
  • Understanding of electrical wattage and amperage calculations
  • Knowledge of step-up transformer specifications and ratings
  • Familiarity with home electrical wiring standards
  • Awareness of portable heater power requirements and safety
NEXT STEPS
  • Research "step-up transformer sizing and safety guidelines"
  • Investigate "home electrical wiring capacity and limitations"
  • Learn about "alternative heating solutions for residential spaces"
  • Explore "energy efficiency ratings for portable electric heaters"
USEFUL FOR

Homeowners, electricians, and anyone considering the use of step-up transformers for heating solutions will benefit from this discussion.

Rmankty
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Hello,I want to investigate the feasibility of buying a step-up transformer(110/120v to 220/240v)in order to plug in a 20 amp 240v portable electric heater that is rated at 4000 watts.The 110/120 comes from a standard wall outlet in a home built in 1995.I want a portable heater set-up that is safe,and efficient as possible and will give me more than 1500watts 5120BTU'S.Some websites state I need a 6000 watt transformer others say 8000watt minimum.I don't want to go overboard, but safety is absolutely essential,and keeping down electrical bill and heating home better than a 1500w 5120 btu heater provides. I don't have 220/240 in house,and I thought the step-up transformer in combination with a heater rated at 4000watts might do the trick? ANY advice you can give will be greatly appreciated!
 
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You would want a 6000w transformer, but what you suggest can't be done: your house's wiring would not support it. You can just buy 2 or 3 1500w space heaters and plug them into separate circuits, though...

...in either case, this is an odd thing to do: doesn't your house have permanently installed heat?
 

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