Cable rating vs. Ballast igniter voltage (Starting voltage)

[Dyer-lectric]

Greetings all!

I recently got posed a question regarding cable ratings and the subsequent starting voltage that HPS ballasts (igniter) can produce.

Background: I am working in a unique situation where we are forced to use a specialized cable to enter a radioactive area, it is rated for 600 volts and will be powering a 277V 250-400W ballast. The nominal voltage is ~ 187V and we were happy with that, but the starting voltage from the igniter can exceed 2500V for cycles at a time.

I've done about as much research on my own as I can, and what I have come to find is that no one rates their cables for that starter voltage, is this correct? Am I looking at this wrong?

LI501-J4-IC (Philips High Pressure Sodium Igniter, long range)

 

[LarryFine]

I just found a high-voltage (DC) wire on eBay in ten seconds. This is the text I saw; copy it and look there:

10Ft.30KV DC 18AWG High Voltage White Wire Cable Rubber Silicone-Telsa Laser Neon

 

[AdrianWint]

That high voltage pulse only exists on the cable between the ballast/ignitor & the lamp - it doesnt exist on the supply cables.

Are you forced to separate the control gear from the lamp?

 

[Dyer-lectric]

That high voltage pulse only exists on the cable between the ballast/ignitor & the lamp - it doesnt exist on the supply cables.

Are you forced to separate the control gear from the lamp?

That is correct, the lamp and the igniter are between 25 - 50 ft. apart. We purchased a special igniter to ensure we were listed and are in compliance on that front. And as stated above, we are in a very high rad area and the cables we have are rated at 600V as our original intent was addressing the nominal voltage of the lamp, not the transient voltage.