Los empalmes de cables se permiten en sistemas de bandeja portacables siempre y cuando:
a. no estén en recorridos horizontales.
b. se encierren en una caja de empalmes.
c. se hagan y aíslen mediante métodos NEC® aprobados.
d. se utilicen en bandeja portacables de fondo sólido.
c. se hagan y aíslen mediante métodos NEC® aprobados.
You might also like to view...
Define the term measure of worth. Identify three different commonly-applied measures.
What will be an ideal response?
To increase engine performance, which camshaft is varied?
A) Exhaust camshaft only B) Intake camshaft only C) Both the intake and exhaust camshaft D) The exhaust camshaft is advanced and the intake camshaft is advanced
?What is the first step in designing a space heating system?
A. ?Select the primary fuel source. B. ?Calculate the design heating load of each room. C. ?Determine whether renewable energy sources will be used in a primary or auxiliary fashion. D. ?Estimate the airtightness of the building based on construction quality.
Finish grade stakes on highway projects are sometimes called _____.
a. black tops b. blue tops c. slopes d. grades