article 210.9

[ajob]

Is it a code violation? article 210.9

A boost transformer is used to boost 208 to 240 to supply a sewer pump motor. One of the output leg is jumpered to the control panel of the sewer pump and the neutral is brought from the building power panel. Is it permitted? OR a violation of article 219.9.

 

[iwire]

Re: article 210.9

2002 NEC

210.9
Exception No. 1: An autotransformer shall be permitted without the connection to a grounded conductor where transforming from a nominal 208 volts to a nominal 240-volt supply or similarly from 240 volts to 208 volts.

Posted By Ajob

A boost transformer is used to boost 208 to 240 to supply a sewer pump motor. One of the output leg is jumpered to the control panel of the sewer pump and the neutral is brought from the building power panel.

Why is there a neutral involed at all in this instalation?