国语自产拍在线观看无码精品_亚洲精品无播放器在线看观看_日本无遮挡吸乳叫声视频_黑人巨大精品欧美一区二区

 
Tray,Cable tray,RiCHENG Cable Tray
adff
About Us
  RICHENG News
  Industry information
  Tray technology
  Tray knowledge
RICHENG CONTACT TEL
Wuxi Richeng Cable tray
URL: www.rc5888.com
E-mail: rc5888@126.com
Tel :0510-88660720 / 21/22/23
24-hour service hotline: 13093082899 18921125633
The current position: Home > News Center >  Tray technology > 
Need to comply with the three bridge installation requirements

Keywords:Need to comply with the three bridge installation requirements  Date:2013-10-10  Source:Wuxi City RiCHENG Cable tray

A metal cable tray and bracket length of not less than 2 and earth (PE) or receive zero (PEN) trunk is connected.
(2) non-galvanized metal plate between the two ends of the cable tray should be connected across the copper ground wire, ground wire cross-sectional area of not less than the minimum allowed 4mm2.
3 galvanized cable tray between the two ends of the connecting plate is not grounded jumper wire, but not less than two plate ends with lock nuts or lock washers connecting bolts.

HomeBest TrayFireproof Tray Galvanized TrayPlastic TrayAluminium TrayStainless Steel TrayCaseAbout UsNews
RICHENG Tray User needs, is our eternal pursuit! User satisfaction is our greatest joy!
Address:Kelan Apartment 3F,Zhongshan West Road, Wuxi city Tel:86-510-88660720/21/22/23-8001
Fax: 0510-88660720-8018 address: www.rc5888.com e-mail: rc5888@sina.com rc5888@126.com
welcome to visit our website:
Two-dimensional Code Scanner or visit
http://m.rc5888.com
Mobile Wbesit
Scan to browse