如同本文一样，美国电气制造商协会（NEMA）公布的各项标准和准则，其内容均在编写过程当中取得多数同意，编写人员可以自由发表意见。除编写人员之外，还在编写之前广泛收集相关人士的各种建议。美国电气制造商协会只负责管理编写过程，制定各项规则以保证编写人员充分交流看法、达成多数一致；协会出版的所有标准和准则，都不是由协会本身撰写的，协会也没有对标准/准则的内容实施独立的试验、评估、验证，对内容的准确性、完整性做出任何评判英语翻译。

The National Electrical Manufacturers Association (NEMA) standards and guideline publications,of which the document contained herein is one, are developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. while NEMA administers the process and establishes rules to promote fairness in the development of consensus, it does not write the document and it does not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications.

因本文的出版、使用，或者因运用、信赖本文中的内容而导致的直接/间接人身伤害、财产损失、连带损失、不良后果，以及任何其它形式的损害，美国电气制造商协会均不承担任何责任。美国电气制造商协会兹声明，从未以任何明确或隐含的方式，承认文件的准确性和完整性，而且，对某一使用者而言，文件的内容只能满足使用者的部分需求，而非全部需求。对于某一制造商和销售商而言，即使制造商/销售商制造、销售的产品符合协会的标准和准则的规定，美国电气制造商协会也从未对其质量做出过任何担保翻译公司。

NEMA disclaims liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, express or implied, as to the accuracy or mpleteness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. NEMA does not undertake to guarantee the  erformance of any individual manufacturer or seller’s products or services by virtue of this standard or guide