On Thu, 29 Jan 2009 13:06:16 -0800 (PST), put finger
to keyboard and composed:

And.............the component is connected/tied across the hot and
neutral of the main 125V supply.

ZNR usually denotes a Metal Oxide Varistor (MOV). Its diameter is an
indicator of its energy rating (Joules). IIRC, a 240VAC system usually
has a 275V MOV. Your mains supply might use a 150V or 175V device.

- Franc Zabkar
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