英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

NEC    音标拼音: [n'ɛk]
日本电气公司 ; 网内会议信件协调人,( NET ECHOMAIL
COORDINATOR 的缩写。负责协调网内有关echomail事务)

日本电气公司 ; 网内会议信件协调人,( NET ECHOMAIL COORDINATOR 的缩写。负责协调网内有关echomail事务)

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Table 300. 5 interpretation - Electrician Talk
    For a given column of Table 300 5 ("minimum cover requirements") there is a potential overlap of the various rows The one that concerns me at present is Column 2 (IMC and RMC conduit) If it's buried in a trench below 2" of concrete or equivalent, but also goes under a parking area in a
  • NEC 334. 30 Securement Requirements for NM Cable Fished. . .
    I know 334 30(B)(1) (quoted below) has been discussed here before, but I haven't seen a satisfying answer to my particular question I recently had a discussion with an inspector about the requirement to staple NM cable that has been fished through a finished wall to an existing junction box
  • Understanding the 75°C vs 90°C column in Ampacity Table. . .
    The columns indicate how much amperage is required to raise the temperature of that size conductor to that column's temperature under standardized conditions So a 2 0 XHHW will reach 75°C at 135A and 90°C at 150A The wire insulation is good for 90°C, so for sizing the wire, we can use the
  • Required Clearance - Electrician Talk
    Good Morning Everyone, I Recently obtained a lead on a service upgrade My question to the community pertains to working clearance of other utilities I could not find any references in the 2020 NEC regarding clearances to gas lines I'm aware of certain electrical equipment being readily
  • Gas station wiring requirements - Electrician Talk
    NEC 2017 514 8 Underground Wiring ENHANCED CONTENT Fuel spilled in the vicinity of gasoline dispensers seeps into the ground and could migrate into underground electrical conduits Therefore, all conduits installed below the hazardous locations of a motor fuel dispensing facility are required to be sealed within 10 feet of the point of emergence from below grade This boundary seal minimizes
  • 210. 8 (F) Outdoor Sauna 2023NEC - Electrician Talk
    I am mainly looking for opinions here I feel best leaving GFCI protection installed however in the eyes of the NEC would 210 8 (F) apply since the “outlet” is the heater which is located INSIDE of the structure? This world is held together with tape, glue and hope
  • Branch Circuits - Electrician Talk
    Branch circuits The distinction between a branch circuit and a feeder can be a source of confusion for the Code user The first step in eliminating this confusion is to understand that the NEC defines a branch circuit as “the conductors between the branch-circuit final overcurrent device protecting the circuit and the outlets” (such as receptacles or lights) [Article 100]
  • NEC and running multiple 3 Phase feeders in single conduit
    Does NEC allow running multiple 480V 3 Phase Power load conductors in a single conduit instead of running each 3 phase loads conductors in separate conduits?
  • Difference between NEC and CEC - Electrician Talk
    The main difference between the CEC and the NEC is that the CEC uses the Canadian Wire Gauge, and the NEC uses the American Wire Gauge :whistling2: A bit too provocative for the average person
  • Receptacle above drop ceiling? - Electrician Talk
    Is there anything in the NEC prevenenting a receptacle from being installed above a drop ceiling? Either in a plenum or non-plenum ceiling? Can't seem to find an article I know Cords or SO cords cannot be ran in a drop ceiling





中文字典-英文字典  2005-2009