I've read here that clamp meters are about 5% accurate,
so if I bought one like this for £20 (+vat+postage)
http://www.tlc-direct.co.uk/Manufact...Test_Meters_7/

0.1amp = 24 watts
so could I have one before the Consumer Unit
and use it to check if anyone's left lights on,
or got a electric fire on etc?


http://www.tlc-direct.co.uk/Manufact...Test_Meters_7/
Digital Clamp Test Meter


Data hold and peak hold functions

DC Voltage: 1V - 1000V (±0.5%)
AC Voltage: 1V - 750V (±0.6%)
AC Current: 0.1A - 1000A (±2.0%)
Resistance: 200 ohms - 20k ohms (±2%)
Insulation test 2000M ohms Max.
Max. display 1999
Jaw Size 58mm



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[george]