Final answer:
Spas and hot tubs with a heater load of 20 amps or less must be GFCI protected to ensure electrical safety.
Step-by-step explanation:
In electrical engineering, spas and hot tubs with a heater load of 20 amps or less must be GFCI protected. A Ground Fault Circuit Interrupter (GFCI) is a safety device that monitors the flow of electricity in a circuit and can quickly shut off power if it detects a fault or imbalance in the current.
GFCI protection is extremely important for spas and hot tubs because they involve water and can pose a risk of electrical shock.
For example, if an electrical component in the spa malfunctions and causes a current leakage into the water, the GFCI device will detect this imbalance and quickly shut off the power to prevent electrocution. GFCI protection helps to minimize the risk of electrical accidents and ensures the safety of users.