220 Vol. or 220 v is not correct.
Note: While noting down the measurement data, the type Alternate Current (symbol: ac) and Direct Current (symbol: dc) are used for clarifications. For example, 12 Vdc and 220 Vac are correct. 12VDC and 220VAC and 12vdc and 220vdc etc. are not correct.
7. Electrical Power: symbol (W). Read as Watt. It is capital W. Writing 100 W and 100 Watt is correct. 50 w or 50 Wt. or 50 Watts is not correct.









































