Class of accuracy in electrical measurements in series with the load, so the same current flows through the load and the ammeter. The voltmeter is used in parallel with the load, so the voltage between the two terminals of the load is equal to the voltage between the two terminals of the voltmeter. Ideally the measuring device should not affect the circuit parameters i.e., the internal impedance of the ammeter should be zero (no voltage drop over the ammeter) and the internal impedance of the voltmeter should be infinite (no current through the voltmeter). However, in actual case, ammeters have a low but non zero impedance
Edmundson Electrical Electrical Distributors, which in 2010 was the fifth largest private company by revenue ($3.4 billion in 2009, $3.9 billion in 2008). Through a number of companies, the Colburn family own a global network of manufacturers, distributors and general purpose retail outlets. Whilst Edmunson Electrical primarily serves the United Kingdom and Ireland, the parent organisation, Marlowe Holdings Investments has an 80.1% stake in the Mainland Europe based preformed plastics distributor, Vink Holdings. Edmundson Electrical Edmundson Electrical Ltd is a privately held electrical distribution company headquartered in Knutsford, Cheshire, incorporated in 1991. It is the largest electrical distributor in the United Kingdom