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Since we're talking about voltages ..... and since the current topic seems mostly finished ? .....
when my ResMed AirSense 10 says it runs on "110 - 240V" and it has no switch to change between the two, does that mean when I travel to the UK (from the USA) I only need to bring adapters to that the plug prongs fit? And that the machine will make the power voltages all "just work"?
Exactly. When a voltage range is specified the power supply will operate at any voltage within that range. The same for power line frequency i.e. 50-60Hz. The only travel adapters required for such devices is a plug adapter.
With switch-mode power supplies being the norm for most things these days most devices you might travel with only require plug adapters.
Do of course check the actual label on each device since if you happen to have a device that does not have a wide input range power supply bad things will happen if plugged into the wrong voltage.
Thing I have always been amazed at is that the outlets under the sink for the dish washer and garbage disposal do not have to be GFCI (at least that is the answer we were given when we asked). Also, it is not a good idea to put computer equipment and such on a GFCI circuit. I have a couple of devices here that the manual said specifically not to do it.
04-28-2015, 08:14 PM
(This post was last modified: 04-28-2015, 08:34 PM by surferdude2.)
That will change as soon as your AHJ adopts the new code. The 2014 N.E.C. requires dishwashers have GFCI protection. "210.8(D) Kitchen Dishwasher Branch Circuit. GFCI protection shall be provided for outlets that supply dishwashers installed in dwelling unit locations."
The definition of an outlet from Article 100 is, "A point on the wiring system at which current is taken to supply utilization equipment." Which means receptacle outlet, lighting outlet, or hardwired.
Can you give me the make & model of the computer components you have that specifically requested they not be on a GFCI protected circuit? I suspect it may be asking that you not connect it to an "ungrounded" GFCI. Ungrounded GFCI's are allowed in older homes where no equipment grounding conductor is present (2-wire systems). They must be clearly marked as ungrounded. AFAIK, all computers and other IT equipment require grounding to function reliably and have adequate shielding to conform to R.F. radiation standards that are imposed by the FCC.