Electrical Systems - Manufacturer Requirements

This section allows alternate choices of conductor requirements for circuits less than 50 volts. Conductors for circuits less than 50 volts may be used if they:

(a) meet the requirements of SAE J1127 "Battery Cable" or SAE J1128 "Low Tension Primary Cable" and the insulating material temperature rating requirements of SAE J378 "Marine Engine Wiring" such as those designated:

GPT, HDT, SGT, STS, HTS, and SXL, or

(b) are classified as moisture resistant and flame retardant in Article 310 of the National Electrical Code, such as those designated:

THW, TW, THWN, XHHW, MTS, or

(c) are flexible cords type SO, STO ST, SJO, SJT, SJTO, SE, SEO, SJ, SJEO, SJTOO, or STOO listed in Article 400 of the National Electrical Code (see Table 6), or

(d) are conductors that meet the IEEE Standard 45, such as those designated:

R, B, T, V, AV, TA, M, S, or

(e) are conductors that meet the requirements of UL Standard 1426.

Conductors for circuits of 50 volts or more must comply with 183.435

Conductors, as purchased, often do not indicate whether or not they conform with the above requirements and standards. If the conductors or their packaging are not so marked, then an alternate means of assurance of compliance should be obtained. Certification of compliance by the wire vendor is one acceptable means.

NOTE PERMITTED EXCEPTIONS 183.430(b)

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