I have used the Metal Oxide resistors available in Digi-Key (Panasonic and
Yageo) for the same purpose. They are flame retardant and handle high surge
currents.
0.82 ohms is listed as a stock value in 2 watt rating. High voltage may arc
across the small body when open but that's still preferable to the short
circuit situation.
Steve KT4FY
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