According to Coast Guard regulations (46 CFR) for electric storage tank-type hot water heaters, what statement is true concerning independent temperature limiting devices?

Question

Accepted Answer

they must prevent the water in the upper 25% of the tank from attaining a temperature higher than 99°C (210°F)

Answer

they are automatically reset when the temperature drops below 90°C (194°F)

Answer

they open a secondary power supply to the heater elements only

Answer

they prevent the water from attaining a temperature of more than 90° (194°F)

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