Amperage rhymes with:
acreage, alderidge, average, betteridge, beverage, beveridge, brokerage, deatherage, detherage, everage, hemorrhage, leverage, pilferage, seigniorage, sewerage, stockbrokerage, underage
Amperage sounds like:
amanpour's, amber's, amberg, ambers, ambriz, ambrogio, ambrose, ambrosia, ambrosio, ambrosius, amburgey, annenberg