1) cable trough
2) electric cable conduit
3) electric cable pit
4) troughing
5) cable channel
a channel intended to enable secondary, auxiliary and control cables to be laid within a substation
GRM: n. (1,2,3,4,5)
Note: to protect the cables against external mechanical effects
References:
SEE cable line
SEE buried cable
SEE subterranean cable
SEE underground line
SEE underground cable

ENERGY TERM COURTESY OF ENERGY.EU