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- Unless an electrical installation is specifically designed to operate under reduced voltage conditions, the voltage drop between the point of supply
and any point of the electrical installation shall not exceed 5% of the normal voltage at the point of supply. (2.5% mains and 2.5% sub mains).
- IE: 5.75V for 230V or 10V for 400V
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- *With this method the millivolts per ampere metre is given and the appropriate conductor size shall be selected from the relevant page of each
cable type.
- NOTE: AS/NZS 3008.1 series provide information on the calculation of voltage drop and a method of choosing conductor sizes taking into
account voltage drop.
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