Quick Hits

Episode 4: Immersion Protection, Water Heaters & Nameplate Markings (422.40 – 422.62)

SLIDE 1 (HOOK / COVER)

⚡ NEC Quick Hit: Immersion Safety & Nameplates (Part 4) ⚡

Hair dryer ALCI/IDCI protection, water heater temperature limits, and nameplate minimum circuit ampacity—let's finish Article 422! 👇

SLIDE 2 (IMMERSION PROTECTION & WATER HEATERS)

Preventing Electrocution and Overheating:

• Hair Dryers & Hydromassages: Cord- and plug-connected hand-held hair dryers and free-standing hydromassage units must feature factory-installed immersion protection (ALCI, IDCI, or GFCI).

• Water Heater Limits: Storage and instantaneous water heaters must be equipped with a temperature-limiting means in addition to the control thermostat, utilizing a trip-free manual reset or replacement element.

SLIDE 3 (NAMEPLATE MARKINGS)

Identifying Electrical Ratings:

• Nameplate Details: Appliances must feature a nameplate giving the identifying name, voltage, and ampere (or watt) ratings.

• Combination Loads: Appliances with motors and other loads must be marked with the minimum supply circuit conductor ampacity and the maximum rating of the circuit OCPD.

SLIDE 4 (WRAP-UP) 💡 Apprentice Pro-Tip: 

Always verify the minimum circuit ampacity and max OCPD markings on equipment nameplates before pulling your branch circuit wire—combination motor/heater loads have strict sizing rules!

💬 Save this post for your final code review on Electrical Appliances!

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