Well, that's one way to make contact - Page 1
Forum section: electronics / general

author: daqq
author_rank: Super Contributor
timestamp: May 26, 2015, 01:29:20 pm
content: Found this on facebook, had to share...

author: c4757p
author_rank: Super Contributor
timestamp: May 26, 2015, 01:36:34 pm
content: That's disturbing. Should have been tagged NSFW.

author: Seekonk
author_rank: Super Contributor
timestamp: May 26, 2015, 02:20:46 pm
content: Always put the tywrap through the bolt hole.

author: robrenz
author_rank: Super Contributor
timestamp: May 26, 2015, 05:12:32 pm
content: I always use three cable ties per cable! One is very unprofessional

author: zapta
author_rank: Super Contributor
timestamp: May 26, 2015, 05:22:53 pm
content: Quote from: daqq on May 26, 2015, 01:29:20 pmIs it a permanent setup or just an intermediate step during installation?

author: free_electron
author_rank: Super Contributor
timestamp: May 26, 2015, 05:23:17 pm
content: Hey, at least his cable ties are properly grounded ! they have the required green yellow tape on em !

author: SeanB
author_rank: Super Contributor
timestamp: May 26, 2015, 05:26:25 pm
content: I am going to guess that was only for a low power test. Then they would terminate the cables properly after getting them through the gland during installation.

author: Seekonk
author_rank: Super Contributor
timestamp: May 26, 2015, 05:45:11 pm
content: Quote from: free_electron on May 26, 2015, 05:23:17 pmMaybe pulling on that yellow/green tape is the quick disconnect.

author: bitwelder
author_rank: Super Contributor
timestamp: May 26, 2015, 06:08:11 pm
content: I guess that before the current reaches 160A the cable tie will give up and 'protect' the fuse...

author: SeanB
author_rank: Super Contributor
timestamp: May 26, 2015, 06:23:18 pm
content: If you think that is scary look at the cable used to earth the overvoltage protection, and the cable used to connect it. 160A fuse, and then a VDR and spark gap unit not capable of opening a 160A fuse safely, with a connecting wire for both phase and protective earth that will very likely fuse open ( with the attendant copper vapour spraying all over the cabinet) before the current is high enough and present long enough to blow open the motor inrush rated fuse link.I have seen those fuse links running at 200A continuous, and they might fail only after a decade of that in industrial units. The 200A fuse at the 500kVA minisub at work took 50 years of peaking at 250A ( I measured it one evening with peak residential cooking load applied) before 2 finally soft failed.

author: retrolefty
author_rank: Super Contributor
timestamp: May 26, 2015, 06:57:23 pm
content: Quote from: SeanB on May 26, 2015, 05:26:25 pmMy thought also. Possibly testing for desired phase rotation before proper permanent termination?

author: electr_peter
author_rank: Unknown
timestamp: May 26, 2015, 07:56:08 pm
content: I can add few points to discussion:(see *) Person doing that installation is not professional electrician or EE of any sort. More likely plumber/janitor/office clerk/any profession not related to electricityreliable (low or high power) electrical connections are almost impossible task without specialised set of toolscable ties are universal tool for everything, especially for quick temporary fixes. Oh, what a satire, installation above istemporaryby all meansTo prove last point about cable ties, see a photo of a big poster in a city. It took one glance from 100 m to tell that something is not up to standard. Can you tell what is not right?EDIT:(*) Looking second time at the image in the first post, I have to say I am leaning to opinion ofSeanB. Installation is done very neatly, cables are cut and cable wrapped very precisely. Additionally, yellow/green duct tape is wrapped around the cable ties. Picture seems to indicate that electrician is doing some preliminary checks and markings (for internal use only).