39 Miss. Code. R. 3-2-19

Current through October 31, 2024

Rule 39-3-2-19

100. Demand meters must be adjusted to meet the following accuracy requirements on installation and after periodic or any other test:

1 . Curve drawing instruments: Electrical element . . . Error shall not exceed two (2%) per cent of full scale deflection

Timing element (Rate) ... 0.25 per cent

2. Integrated-demand meters:

Electrical element . . . Tolerance specified in Rule 18 watt-hour meters.

Timing element . . . Where the timing element serves only to measure the demand interval it should be adjusted if its rate is more than plus or minus two (2%) per cent in error. Where the timing element serves also to keep a record of the time of day at which the demand occurs, it should be adjusted if its average rate is more than plus or minus 0.25 per cent in error.

3. Lagged-demand meters:

Electro-magnetic type . . . two (2%) per cent of full scale deflection

Thermal type . . . four (4%) per cent of full scale deflection

39 Miss. Code. R. 3-2-19