Connecting a 240v Water Heater to a Timer/Switch

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SUMMARY

The discussion centers on connecting a 240V water heater to an Intermatic EH40 DPST timer switch, replacing an old SPST switch. Users confirm that the neutral (white) wire should remain intact while connecting one side of the DPST to the hot (black) wire. Concerns arise regarding the wiring setup, with suggestions to consult a licensed electrician to ensure safety and compliance with local codes. The conversation highlights the importance of proper grounding and the risks associated with incorrect wiring.

PREREQUISITES
  • Understanding of 240V electrical systems
  • Familiarity with DPST and SPST switch configurations
  • Knowledge of electrical wiring color codes (black, white, green)
  • Basic electrical safety practices
NEXT STEPS
  • Research proper wiring techniques for DPST switches in 240V systems
  • Learn about electrical grounding and safety standards
  • Study local electrical codes regarding appliance installations
  • Explore troubleshooting methods for electrical wiring issues
USEFUL FOR

Homeowners, DIY enthusiasts, electricians, and anyone involved in electrical installations or repairs, particularly those working with 240V appliances.

  • #31
vk6kro said:
I see by your avatar there has been some deterioration since then. :)

Actually, the avatar came before the member photo. A lot of people don't realize that the avatar is a photo of me in one of my Hallowe'en outfits. It took quite some time for me to get comfortable enough to post a real one.
Only my furnace, stove and water heater are gas appliances. My lights run on wax and fire, the fridge, freezer and main computer are water-powered, and my laptop has a gerbil on a treadmill turning a generator. :biggrin:
 

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