The cable jacket and/or conduit walls should be completely lubricated. The lubricant should be applied immediately before, and/or, during the pull. This quantity should be increased as needed for difficult pulling situations.

An estimate of the quantity of required lubricant can be determined acc. to American Polywater 'TechnicalTalk' Volume 4, converted to SI units. The equation is a helpful theoretical calculation and the final determination of appropriate quantity of pulling lubricant should be left to the field, and should be based on the difficulty of the pull

Symbol
$Q_{\mathrm{p}}$
Unit
l/m
Formulae
$\frac{D_{\mathrm{e}} N_{\mathrm{c}}}{1400}$
Related
$D_{\mathrm{e}}$
$N_{\mathrm{c}}$