Generators and Power Quality
How to Select the Right Generator for Your Home Electrical Requirements© By: Dave Rongey
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
Thanks for your electrical question Joe.
Generators for Home Electrical Power
A few things to consider for this hot tub generator application:
- The generator power would be required to provide a 4-wire 50 amp GFCI circuit and be capable of handling the surge power of 4500 watts and the starting amps of the pump motor.
- It would be best to take the exact electrical specifications to your proposed generator supplier and have them tell you if they have a generator that would be able to provide the adequate capacity required when all of the hot tub functions are activated all at the same time.
How to Select the Right Generator for your Home Electrical Requirements
- Understand that not all generators are alike and some will not work with electrical heating loads or motor loads such as pumps, especially well pumps.
- Other considerations would be electronic controls where voltage fluctuations are not permitted so voltage stabilization will be required of the generator.
- Even equipment such as your hot tub most likely has solid state controls for the various functions which will require clean stable power.
- A generator must be carefully selected so that the power quality and quantity will be compatible with all of the characteristics of your types of electrical loads.
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
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.
The following may also be helpful for you:
Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
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