MEGA MC Cable Installation & Application Guide - Southwire
MEGA MC Cable Installation & Application Guide - Southwire
MEGA MC Cable Installation & Application Guide - Southwire
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page 5<br />
Section 2. <strong>Cable</strong> Rigging and <strong>Installation</strong><br />
Remember, code compliance is not the same as owner satisfaction for either <strong>MC</strong> or conduit. <strong>MC</strong> installations<br />
with parallel and perpendicular layouts can look just<br />
as good as conduit, with less effort.<br />
basiC <strong>MC</strong> <strong>Cable</strong> installation steps<br />
(1) Hanging the support systems<br />
(2) Installing rollers and sheaves<br />
(3) Preparing <strong>MC</strong> cable for installation<br />
(4) Pulling <strong>MC</strong> cable<br />
(5) Terminating <strong>MC</strong> cables<br />
(1) hanging the suppoRt systeMs<br />
neC ® 100.12 Mechanical execution of work<br />
Electrical equipment shall be installed in a neat<br />
and workmanlike manner.<br />
support intervals—According to NEC ® Section 330.30, <strong>MC</strong> cable must be supported and secured<br />
at intervals of 6 feet or less. The support interval requirement is waived when the cable is fished. This<br />
is a major benefit of using <strong>MC</strong> cable over wiring products that can’t be fished during remodeling. see<br />
neC ® 330.30 securing and supporting on page 14.<br />
In applications where the appearance of the <strong>MC</strong> cable is particularly important, supports installed<br />
closer than the required 6-foot intervals may be recommended. The use of these additional supports<br />
will reduce cable sag and provide a neater installation.<br />
supporting <strong>MC</strong> cable in vertical applications—<strong>MC</strong> assemblies are not designed to support the cable<br />
weight in long vertical installations. Long vertical runs of <strong>MC</strong> cable must meet the same requirements<br />
used for supporting conductors in vertical raceways shown in NEC ® Table 300.19(A). In addition,<br />
NEC ® Article 392 also requires <strong>MC</strong> cable to be secured in vertical cable tray installations. For special<br />
riser-cable constructions of <strong>MC</strong> cable, exceptions can be made to these vertical support distance<br />
requirements in Table 300.19(A).<br />
You may be able to meet the support requirements of Table 300.19(A) by putting horizontal offsets<br />
in the cable at the required vertical distances. Be sure to verify that offsets will meet local inspection<br />
requirements. Consult with the <strong>MC</strong> cable manufacturer for other alternatives for supporting<br />
large-sized <strong>MC</strong> cable in long vertical runs. see support in vertical v Raceways page 14.<br />
<strong>Southwire</strong> <strong>MC</strong> inStallation <strong>Guide</strong> section 2. cAble riGGinG And instAllAtion
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