Originally Posted By: jmyers
This post was automatically imported from our archived forum.
You have hit on what is probably the least understood portions of the code requirements.
In the case you are speaking of, you would follow the manufacturers recommendation, wiring as they stated in the installation manual.
You should be careful not to confuse dual voltage ratings on appliances, as wiring requirements. They are not the same. What a dual voltage rating means, is that the appliance can be installed using either voltage.
While I do not doubt Greg F's wisdom, in all my years I have always failed to find any rating on the nameplate, which pertained to 120 volt components installed.
Maybe we could get Greg to take a picture of one and post it here.
I am not sure what is going on with the manufacturers but every appliance that I have ever installed has failed to give instructions on how to properly wire the appliance. Some are nice enough to give you a schematic, but I sure would not bet my life on it. Most of them simply tell you to have a qualified electrician hook it up for you, if you are unsure of how to properly wire it.
To answer your question about the 120/240 volt thing, that would be no. I understand your question but you are not thinking JEFF, 120 volt no matter how you wire it, will always be a three wire. Sometimes you will have 240 volt which require the 4 wire, sometimes 3, depends on what you are wiring.
Water heater, 3
Oven (I mean the wall ovens, not stoves), 3
Heat pump, 4
Well pump, 3
Now that you are more confused than when you started, HE HE, I just had to laugh! ![icon_cool.gif](upload://oPnLkqdJc33Dyf2uA3TQwRkfhwd.gif)
A & N Inspections, Inc.