drjeseuss wrote:Any idea if there are any differences in the 110 unit aside from the plug? I appreciate your honest assesment of the product. I'll certainly keep this in mind. As they say, you get what you pay for. :) Still, for such a low cost, I'm sure I could get a few uses out of it.
The heaters are going to be designed for use with 220, putting 110 across them will result in lower wattage/temps - probably making the thing unusable.
the $13 is definitely tempting. . .looks like there's also a 110V version
for a little over $40 after shipping. . .if you have a 220 line available for an appliance (e.g. dryer) you could always swap the plug to fit that without issue. short of that - I wouldn't bother with the 220V version.
When you have a heater rated for wattage at a certain voltage and then apply half the voltage - you wind up with a quarter of the wattage
. Taking a quick look at the wattage difference you'll be seeing if you decide on the current 150W version for 220V you're looking at:
P = V^2*R.
150 = 220^2 * R.
R = .00309 ohms
P = 110^2 * .00309P = 37 watts