This designation is not provided for Pue, but is often found in foreign companies.
As English spelling had yet to become standardized, this word was also written as Pue, peugh,
pew and Pue.
To determine this parameter, the Pue is available in Table 1.3.4 for copper wires
and 1.3.5 for aluminum wires.
And 2.1.3 Pue, for non-combustible bases(brick,
concrete, etc.) can be carried out directly on the structural elements in special grooves.
So, according to the Pue, the choice of conductors with voltage up to 1000V should
be carried out only by heating.
In one of the main books of any electrician- Pue, the whole point is devoted to the correct
choice of wire cross-section.
If it differs from the average + 15⁰С,
based on which the calculation is made in the tables of the Pue, then you should make correction factors.
For these purposes, the marking of wires must be carried out in accordance with the uniform
rules that are given in the"Bible" of any electrician- Pue(Rules for electrical installations).
According to the requirements of Pue, any electrical installation,
re-mounted or put into operation after modernization, can be connected to the power grid only after signing the certificate of admission to the connection.