Ron Rich wrote:Since you did not post your location, when you did your forum profile--can't say--
You can use a polarized cord--just make sure the "hot" ( black wire) goes to the power switch.
Ron Rich
I have to add that, depending on the unit, it's impossible to determine the correct polarity when installing a polarized cord set.
I don't have enough to go on here - no model/chassis was posted.
Many units were wired with "hot chassis" and some exposed screws that could be potential dangers if plugged in a certain way.
It's mandatory to go over the specific circuit layout, and determine how/if a polarized cord can be properly wired without compromising safety.
Transformer-operated sets can also be an issue depending on the specific design, if they used grounding capacitors to the chassis.
Nevertheless, some slight modifications can be done to eliminate shock hazzards.