This rule relates to overcurrent protection for dry-type transformer circuit rated at 750volts or less. 125% issued for the guide with regard to the secondary side if the primary supply is set at not more than 300 %. the rule 26-254 speaks to 9amps more or less for liquid filed units. Why does the supplieer charts list 250% of the primary FLA or the next size smallee and quotes rule 26-254 and Nec.450.3. Is the chart correct? I don't tink so.
