N.H. Code Admin. R. Env-Or 402.25
“Impressed current system” means a type of cathodic protection system that uses a power source called a rectifier connected to buried metal anodes that are connected to the metal being protected by a wire.
Source. (See Revision Note #1 at chapter heading for Env-Or 400) #10393, eff 9-1-13; ss by #12643, eff 10-10-18 (formerly Env-Or 402.18) (See Revision Note #2 at chapter heading for Env-Or 400)