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Tankless electric water heater question MiamiCuse 07-08-2008
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Posted by MiamiCuse on July 8, 2008, 11:18 pm
When you install an electric tankless water heater, do you have the
electrician hook up the wiring first or do you have the plumber hook up the
supply lines first?

I am thinking the electrical should be hooked up first but not sure.

Thanks,

MC



Posted by Art on July 8, 2008, 11:40 pm
Mine is gas and everything done by gas company at same time but if I had a
small electric one I would have electician do his job first since it should
be a no brainer as long as you give him specs for the heater.


> When you install an electric tankless water heater, do you have the
> electrician hook up the wiring first or do you have the plumber hook up
> the supply lines first?
>
> I am thinking the electrical should be hooked up first but not sure.
>
> Thanks,
>
> MC
>



Posted by John Gilmer on July 9, 2008, 6:16 am

> Mine is gas and everything done by gas company at same time but if I had a
> small electric one I would have electician do his job first since it
> should be a no brainer as long as you give him specs for the heater.

If possible, you install the most "disruptive" systems first and then work
the other stuff around.

For example, duct work and waste lines go in first. Then other plumbing
"works around" the ducts and pipes. It's "nice" for fixed appliances
including HVAC and water heaters to be connected to duct work and plumbing.
At this point, the wiring can be neatly connected to the appliance. It's
easy to run wires around pipes and ducts but the reverse ain't so each. I

If you have good plans the electrician can wire leaving coils of wire
hanging where he things it should be able to reach wherever the appliance
needs the juice. With the price of copper today, this might not be such a
great idea.



** Posted from http://www.teranews.com **

Posted by cyd on July 9, 2008, 1:06 pm
> Mine is gas and everything done by gas company at same time but if I had a
> small electric one I would have electician do his job first since it should
> be a no brainer as long as you give him specs for the heater.
>
>
>
> > When you install an electric tankless water heater, do you have the
> > electrician hook up the wiring first or do you have the plumber hook up
> > the supply lines first?
>
> > I am thinking the electrical should be hooked up first but not sure.
>
> > Thanks,
>
> > MC

We just had one of these installed. The electrician came out and put
in the wiring first, then the plumber did the pipes, then the
electrician returned after it was plumbed and turned it on.

Posted by John Grabowski on July 9, 2008, 7:56 am

> When you install an electric tankless water heater, do you have the
> electrician hook up the wiring first or do you have the plumber hook up
> the supply lines first?
>
> I am thinking the electrical should be hooked up first but not sure.


Let the plumber do his job first. The electrician has more flexibility in
locating the wiring. You could have the electrician prewire the unit with a
plug and cord or if it is a really big unit have it prewired with flex. It
could make wiring easier later if the unit is located in a confined space.


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