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Generators and Power Quality


By Dave Rongey - Summary:

How to Select the Right Generator for Your Home Electrical Requirements

Select Your Generator Carefully

Generator Question: I was wondering if a generator could be hooked up to a hot tub for emergency heating only.
The hot tub requires a 50 amp breaker and pulls about 4500 watts with everything running.
What size of portable generator would be required and any special wiring needed?

This electrical question came from: Joe, a Homeowner from Iowa city , IA

Dave’s Reply:
Thanks for your electrical question Joe.

Generators for Home Electrical Power

A few things to consider for this hot tub generator application:

How to Select the Right Generator for your Home Electrical Requirements

RESOURCES

The Importance of a Generator Transfer Switch

Hot Tub Wiring

Home Generators
electric-generator
Home Generators
This series covers a wide variety of topics all about home generators including sizing, selecting, connecting and safely operating this all important addition to your home.

Wiring a Hot Tub
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Hot Tub Wiring Diagram Information
Electrical Codes and Details for Spa and Hot Tub Wiring. Essentials for your installation, including the required GFCI ground fault protection and circuit wire size.

Power Quality



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Electrical Codes for Home Electrical Wiring
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2 Responses to “Generators and Power Quality”
  1. Dave Rongey says:

    Hi Sue,
    The generator would bog down to the electrical demand of the heater which is in the hot tub. You may want to consider having a freeze stat installed on the hot tub. A freeze stat is typically set up to turn on the pump at a low temperature before freezing which will then circulate the water to help prevent freezing. A local hot tub installer or technician should be able to set you up with this.
    I hope this helps,
    Dave

  2. Sue says:

    I live in the northeast and as you can imagine, have plenty of snow storm and blizzards. I have a hot tub which requires 240V, 50amp. I have a generator that can handle 7000 running watts and 9000 start up watts. My electrical box has a switch, so that if I loose power, I hit the switch in my breaker box, connect the generator and off I go. We have lost power before for over a week, and I am afraid of my hot tub freezing. I do use it all winter so draining is not an option. If I were to alternate my house (furnace, minimal lights, etc…) and every few hours switch to only the hot tub. Would my generator handle it?