1) alternate current supply
2) alternating current supply
3) a.c. supply
4) AC supply
GRM: n. (1,2,3,4)
REG: American English (2)
USG: both AC and a.c. are accepted abbreviations for alternating current (3,4)
References:
ANT DC supply
ANT direct current supply
ANT d.c. supply
GEN supply
SEE alternating current

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