You stated it was an 80 amp tankless electric, and that the manufacturer calls for 2 40 amp circuits - is that 2 40 amp 240 volt circuits 80 amps? Notice: Installing an additional 240 volt circuit should be done according to local and national electrical codes with a permit and be inspected. Yes a disconnect is needed if it is not within site of the breaker box. The water heater and breaker panel are both in the basement. Can I use this box for this application and if so how do I wire? That is they have to have a disconnect if they are not within light of sight of the panel unless the breaker is lockable. Or do we need to provide wire to the heater too? Or is there an easier way? What have you based you actions on? Double check your description, specifications and manufacturer installation instructions.
A 120 amp one is wired like this in most casesThat is what I thought, but was verifying it based on the wording used in the original post. The manuf calls for 2 40Amp circuits with 8 gauge wire. The hot water heater and furnace may or may not need one, while the central air unit and the well pump will always need one. The information provided is general installation advice. By definition, it would seem that if you have a 30A breaker, the disconnect would need to be rated for at least 30A; I think the 60A isn't needed. The local authority having jurisdiction in your area may have different codes than the national code.
I am going to replace the switch. Bill wrote: Quoted Text Here. First of all, there should be 2 elements, a lower and an upper, are both 3800 watts? If this all sounds good to you, then you have given me what I needed. . However one of the cables is now hooked up in the control panel box to another 10 gauge cable with wire nuts, and connected with the white wire to white wire, and black wire to black wire, and leads out to my electric meter. I think I'll continue to throw the breaker for vacation mode.
Please consult the installation manual that is included with the water heater you have for specific installation instructions. So a water heater that is in a garage or utility room with a direct sightline to the nearby panel serving it would be acceptable. Keep in mind that all the circuit components must be rated the same as the dedicated circuit, properly installed, grounded and bonded. Finally no other part are required neutral bar, ground kit, fuses, etc. Your next shower will be a cold one. It doesn't say if, or when, or maybe, or sometimes. From there the wire would go directly into the water heater, just like a hot tub.
The junction box is recessed into the top enclosure of the water heater where one screw secures the cover plate where the main wires are located. Having a discussion with spouse about the disconnect for an elec water heater. Tools Required: Basic Electricians Pouch Hand Tools, electric drill, auger bits and extension cord as needed depending on the scope of the project. JoAnn Hi JoAnn, If the water heater timer requires a Neutral wire then one must be provided along with a separate ground wire. To view links or images in signatures your post count must be 10 or greater. Home had 2 water heaters, different locations, each was switched. If a neutral conductor is required you will need to install an isolated neutral bar and make the connection there, or purchase a disconnect that has an isolated neutral bar already installed.
I went out to the panel and the white wire is in fact wired to the ground bar with all the other green or white wires coming from the panel. That has not always been the code. How to Wire a 240 Volt Residential Water Heater Application: Wiring a 240 Volt 4000 Watt Residential Electric Water Heater. That could be in another room. Most breaker manufacturers have pad-lockable clips that install on the breaker itself, under the panelboard cover. The 60 Amp model was more expensive though and you won't gain anything by using it.
It would be incorrect to imply that all water heaters needed a disconnect. What doses this mean for you when wiring your home? They are not required by any code that I am familiar with. Yet that same inspector would probably have no problem if it were a snap switch. Thanks for the response, Joe. I hope this helps, Dave Hi, I have replaced my 220 water heater. This will be inspected, and we are working under a permit.
Does the service have a main disconnect or is it a split bus? Hi Curtis, Application: Replacing a gas water heater with a 240 volt 30 amp hot water heater, and reconnecting to an existing 240 volt 30 amp hot water 10 gauge circuit. Second question can it be mounted above the water heater between the hoses going in and out of the water heater? That has not always been the code. Yes of course you can use it if its ratings meet or exceed the circuit ratings. You turn it over and put it back in. Dave Hi Mac, From what you have stated the electrical circuit wiring may not be standard, therefore it is in your best interest to have the wiring inspected by a qualified electrician.