Sneak current

1.(Elec.) A current which, though too feeble to blow the usual fuse or to injure at once telegraph or telephone instruments, will in time burn them out.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Each SNAP LiTE model features sneak current protection and guards against both over-amperage and over-voltage conditions.