Or use the split extension cord idea and solder
the resistor in the neutral side (I wouldn't), or
install it in a $2.99 power strip or put it
in a J-box with a receptacle, or the project box as
you said. Added work, added expense, and not
negligible as compared to the price of the meter
you mention below.
Ebay! Thanks - I learned something. I did not know
you could get even a piece of crap clamp meter like
that for ~ $23.00 (Shipping is $9.99) I may buy one
to find out just how bad it is.
Speaking of crappy meters, Harbor Freight periodically
sells a cheap DMM (non true-RMS) for $2.99, including
the 9V battery. Stated AC accuracy is 1.2% of reading
on the 200 V AC scale. It is on sale now - item
#30756-4VGA. Shipping is $2.95.
See above - you can get a DMM that is probably equivalent
accuracy/quality for about one fourth the price.
Yes, I think you did. You're not thinking of true-RMS
meters, and are willing to settle for that innaccuracy
as being a close enough approximation.
Well, that's not relevant. Electricians don't care what
a single PC uses - they just wire a standard 15 or
20 amp branch circuit. But if an electrician was
looking for a valid approximation where switching power
supplies (such as those in PC's) were on the circuit,
and if he knew what he was doing, he'd use a true-rms
clamp on meter.
We've been discussing this, and I assumed that you were
talking true-RMS. My mistake.