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:


  • NEC Requirements for Generators and Standby Power Systems
    Mike Holt Enterprises, Inc • www MikeHolt com • 888 NEC CODE (632 2633) 5 NEC Requirements for Generators and Standby Power Systems 445 18 Disconnecting Means Generators must have one or more disconnecting means that disconnects all power, except where: Figure 445–7 (1) The driving means for the generator can be readily shut down, and
  • 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
  • Mike holt - Electrician Talk
    TheNEC also requires certain types of circuits in specific places in addition to the minimum requirements based on the VA per sq ft calculation A dwelling unit kitchen, dining room, breakfast room, pantry, or similar area must have at least two 20A, 120V small-appliance receptacle
  • Continuous Load: what is maximum current - Electrician Talk
    From the 2023 NEC Article 100 Definition: Continuous Load: A load where the maximum current is expected to continue for 3 hours or more 210 20(A) Continuous and Noncontinuous Loads "Where a branch circuit supplies continuous loads or any combination of continuous and noncontinuous loads
  • INTRODUCTION TO UNIT 5—RACEWAY AND BOX CALCULATIONS - Electrician Talk
    of the NEC are the primary references for determining allowable con-ductor fill in raceways For the most common condition, where multi-ple conductors of the same size are installed together in a raceway, the maximum number of conductors permitted can be determined from the tables in Annex C For situations where conductors of different
  • 80% rule? - Electrician Talk
    80% rule applies to continious loads such as motors, lighting or any load expected to be on 3 hours or more A breaker is rated for 100% of the noncontinious load which may include outlets or other small appliance
  • Understanding Table 220-55 - Electrician Talk
    The NEC does not define ranges, ovens or cooktops but based on manufacturers usage a range is a unit that has a cooktop and oven built together in one appliance An oven is just a single or double appliance for baking , roasting, etc A cooktop is just the burners without the oven
  • Inconsistent Confusing Conduit Fill Calculation.
    As I said, according to NEC tables 9-1 and 9-5 1 2" EMT is acceptable I don't believe this is acceptable in this case and I don't think a local inspector or any of my local electricians would think it is even if a logically correct argument can be made to show it is allowed under NEC This is exactly my point
  • Ground rod horizontal in ditch - Electrician Talk
    NEC requires that rods pipes plates and rings all be buried 30" under There's an exception for rods when you hit rock but that's what the OP's talking about, requires 30" deep too (250 52 and 250 53)
  • 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





中文字典-英文字典  2005-2009