I'm trying to find out what current my space heater uses. Says 1500 watts;
that's about 12A. I have a clamp-on current meter. Is there a trick to
using one of these on a power cord or do you have to have some kind of
adapter to split the power cord lines?
Any way to do this to make it simple? I have some other thinfs, like a
radio, that I'd like to measure too. (Trying to run my space heater and a
radio off the same receptacle.)
The easiest way it to just use one of those heavy duty extension cords
that look like great big zip cord (sold for A/C units). Them you just
split out one of the conductors. The advantage is it is still an
extension cord. A short one is going to be cheaper than that adapter.
On Monday, November 20, 2017 at 10:50:08 AM UTC-5, email@example.com wrote:
Or get a KillaWatt meter, so you can test anything with a cord and plug.
Also, it measure power, ie it accounts for power factor, not an issue
in a pure resistance heater, but if it's a blower, motor load, power
supply, etc, it makes a big difference. Measuring amps with those wont
give you power.
It won't work if you clamp around the full cable.
A clamp on current meter must be clamped around only one of the wires in the cable. You could modify an extension cord by splitting the wires apart so you can clamp ONE of them.
the radio shack meter I have came with an adapter to do this
've only read a dozen out of the50 or so replies, so don't
know if it's been mentioned, but this is _exactly_ what
a "kil-a-watt" plug-through meter is used for.
KAWs are widely available for about $30 - including at
such places as HomeDepot, Bed Bath and Beyond,
and Harbor Freight.
Advantage of HF is there are 20 pct off coupons
available pretty much everywhere.
Knowledge may be power, but communications is the key
Using line splitter, I found my Ideal Split-Jaw Smart-Meter clamp-on
meter will not read less than 0.6 A. so can't measure my radios' curret
usage, but measured the heater's 12.5 A OK. I think it is around 500 mA.
Ideal is the first eter I've had that had a minimum measurement cut-off.
I can unerstand maximum but...
I think my UEI goes down to .1a but to be frank, if the current is
that low I really do not care. If I was really interested at that
point I would use my Kill a Watt or the Fluke "in line" meter that
gets down to 100s of micro amps.
You will also find a radio or anything else with an amp in it responds
to the volume control. The louder it is the more current it draws.
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