75.8 The unit shall be prepared and conditioned for leakage current measurement as follows:
a) The grounding conductor shall be open at the attachment plug and the test unit shall be
isolated from ground.
b) The sample shall be conditioned in an ambient temperature of 21.1 – 26.7°C (70 – 80°F)
and approximately 50 percent relative humidity for not less than 8 h.
c) The test shall be conducted at the ambient temperature conditions specified by (b).
d) The supply voltage shall be adjusted to the voltage indicated in Table 46.6. These voltages
are nominal for the Rain test of Clause 67, the Condenser fan motor failure test of Clause 58,
and Condenser water failure test of Clause 60.
e) Water-cooled units shall be tested with water flowing through the condenser at a rate
required for operation of the system.