It's tension / something similar in most of the latin type languages but all of the germanic languages...
"achtung! hauct spannung! " ?
But yeah, the ESB actually do put their logo, phone number (incase of emergencies), pole ID number and the DANGER ! Keep Away - RISK OF DEATH on EVERY pole along witht he guy being zapped... even on LV distribution stuff.
At least they're consistant!
The transmission pylons have their actual voltage.
HIGH VOLTAGE LINES OVERHEAD
DO NOT APPROACH ! - KEEP AWAY !
RISK OF DEATH
All train doors have a warning saying "HIGH VOLTAGE LINES OVERHEAD" and the little pictogram too.
Just incase anyone decides to climb up and touch the 25kV DC lines!