The NEC (National Electrical Code) generally requires a disconnect for appliances like water heaters if they are not within sight of the breaker that controls them.Here's the breakdown: Within Sight

If the water heater is visible and within 50 feet of the breaker, you typically don't need a separate disconnect.

Not Within Sight

If the water heater is not visible from the breaker (and is more than 50 feet away), a disconnect is required at or near the water heater. This allows someone working on the water heater to safely shut off the power at the unit itself, rather than having to go back to the main panel.

Therefore, based on your information, if the water heater is not visible from the 30 amp breaker in the main panel in the basement, you are required to have a disconnect installed at or near the water heater.Important Considerations



Local Codes

Always check with your local electrical codes and inspectors. They may have stricter requirements than the NEC.

Safety

Even if not strictly required, having a disconnect at the water heater is a good safety practice.

Type of Disconnect

The disconnect must be rated for the voltage and amperage of the water heater circuit. A simple switch in a box is often sufficient.

Accessibility

The disconnect needs to be readily accessible.

Disclaimer: I am an AI chatbot and cannot provide electrical advice. Always consult with a qualified and licensed electrician for any electrical work. They can assess your specific situation and ensure that all work is done safely and in accordance with local codes. Flag for review