240 neutral wire

jeff_hayes · July 10, 2012, 4:15am

I have come across this many times lately that people have turned the neutral wire into the second hot wire on 240 panels. I am just curious if there is a certain way to describe this better then. stating the obvious.

both cases they have either taped the white wire with black tape or used a sharpie.

Any input would be helpful

Thank you

www.topnotchhomeinspection.com

rmeier2 · July 10, 2012, 9:24pm

It is permitted to be reidentifed as an ungrounded conductor when you comply with 200.7©.

200.7© Circuits of 50 Volts or More. The use of insulation
that is white or gray or that has three continuous white
stripes for other than a grounded conductor for circuits of
50 volts or more shall be permitted only as in (1) and (2).
(1) If part of a cable assembly that has the insulation per-
manently reidentified to indicate its use as an un-
grounded conductor by marking tape, painting, or other
effective means at its termination and at each location
where the conductor is visible and accessible. Identifi-
cation shall encircle the insulation and shall be a color
other than white, gray, or green. If used for single-pole,
3-way or 4-way switch loops, the reidentified conduc-
tor with white or gray insulation or three continuous
white stripes shall be used only for the supply to the
switch, but not as a return conductor from the switch to
the outlet.

jfunderburk · July 10, 2012, 9:31pm

That’s how you do it.

http://www.do-it-yourself-help.com/circuit_breaker_wiring_diagrams.html