CSA 4.1-2017 pdf free download

CSA 4.1-2017 pdf free download.Gas water heaters, volume I, storage water heaters with input ratings of 75,000 Btu per hour or less.
Method of Test
When connected in the manner intended to a supply circuit of rated voltage and frequency, the appliance shall be operated as specified in Clause 5.16, Wall, floor, and ceiling temperatures. When equilibrium temperatures have been attained and with continued application of rated voltage and frequency, leakage current between each of the supply terminals and all noncurrent-carrying metal parts (ungrounded), which might become energized, shall be measured using the instrumentation specified in the Standard for Leakage CurrertforAppiiances, ANSI/UI. 101. The leakage current shall not exceed 0.5 milliampere.
4.31.40
Adequate dielectric shall be interposed between ungrounded current-carrying parts and those external surfaces that can be contacted.
Method of Test
When connected in the manner intended to a supply circuit of rated voltage and frequency, the appliance shall be operated as specified in Clause 5.16, Wall, floor, and ceiling temperatures. At the conclusion of the operating period specified, the applicable dielectric withstand test(s) specified below shall be conducted.
During conduct of the dielectric withstand tests, a 500 volt-ampere or larger transformer, having an essentially sinusoidal output voltage, which can be varied, shall be used. The applied potential shall be increased gradually from zero until the required test voltage Is reached and shall be held at that value for 1 minute. The use of a 500 volt-ampere or larger transformer is not necessary if the high potential testing equipment used maintains the specified high potential voltage at the equipment during the test.
a) An appliance shall be capable of withstanding, for 1 minute without breakdown, the application of a 60 hertz potential between high-voltage live parts and dead-metal parts, and between live parts of high- and low-voltage circuits. The test potential shall be:
1000 volts plus twice rated voltage; except
1000 volts for motors rated at not more than horsepower (373 W) and not more than
250 volts.
When higher than rated voltage is developed in a motor circuit through the use of capacitors, the rated voltage of the appliance shall be employed to determine the dielectric withstand test potential, unless the developed steady-state capacitor voltage exceeds 500 volts, in which case the test potential for the parts affected shall be 1000 volts plus twice the developed voltage.
b) A low-voltage circuit shall be capable of withstanding, for 1 minute without breakdown, a 60 hertz potential of 500 volts applied between low-voltage live parts of opposite polarity and between lowvoltage live parts and dead-metal parts.
The dielectric withstand test between low-voltage parts of opposite polarity need not be conducted on the complete assembly if the components have been separately subjected to this test condition.CSA 4.1-2017 pdf free download.