H07V-U / H07V-R "facilities in conducts, located on surfaces or embedded, or in closed systems analogous."
Also recommended for fixed or protected light assembly, control, for voltages until 1000V in alternating current (or until 750V in DC)." (UNE 21176)
H05V-U in "rigid installation protected inside systems and to, or on, fixed lights. They are adapted for facilities made in conducts
placed superficially or embedded, only in the case of signal wirings or control." (UNE 21176). This is specially indicated for inner
installations, since its high index of sliding facilitates its positioning under an embedded tube.
H05V-U In canals closed only in signal wirings and control. In internal wiring of equipment and electrical mechanisms in zones of normal temperature.
H07V-U In closed and tubular tubes, canals. In internal wiring of equipment and electrical mechanisms in zones of normal temperature.
H07V-R In closed and tubular tubes, canals. In internal wiring of equipment and electrical mechanisms in zones of normal temperature.
The Maximum temperature of the conductor to whom a cable in individual can work, depends on the temperature limit of other cables and accessories that are in contact with.