On Sunday 20 December 2015 13:37:38 John Thornton wrote: > On 12/20/2015 11:47 AM, Gene Heskett wrote: > > On Sunday 20 December 2015 12:15:21 John Thornton wrote: > >> Back from shopping... > >> > >> Pencil sketch of the power side > >> http://gnipsel.com/images/bp-knee-mill/bpel03.in > > > > the left box probably needs the paint cleaned off under it, and > > maybe a star washer under the spade lug for extra connection bite. > > And there ought to be a similar ground to the box in the right box. > > But as sub boxes generally have isolated busses for the static (bare > > wires in the romex */3 wires) in order to bot short circuit the > > connection at the main entrance a foot or so from the meterhead. > > > >> Incoming terminal block on left panel where extra ground is > >> http://gnipsel.com/images/bp-knee-mill/bpel04.jpg > > > > Here I cannot see the above green wire, the static, while connected > > to the to the box, but it does not leave to connect the rest of the > > stuff, just the white (neutral) and black (127 hot) wires leaving > > are all I see leaving. Tieing to the box, is to ground the box to > > the static grounding. > > > >> next terminal block on right panel > >> http://gnipsel.com/images/bp-knee-mill/bpel05.jpg > > > > And here, unless its in the block mounting for the two green wires I > > can see, and I am not at all familiar with that style of terminal > > block, they are floating. Are the two pieces of SJ I see coming in > > at the top, source or load? > > The green/yellow terminal blocks are standard ground blocks, the > center screw tightens a gripper that forces a tight metal to metal > contact with the DIN rail and the terminals. It's very much grounded > to the DIN rail and the DIN rail is fastened to the back plane with > welded on studs and star washers and nuts. > That makes me feel a lot better John.
But I am shortly going to be out of pocket till Monday afternoon. Cataract fixings in the XYL's right eye are scheduled for first thing in the morning, so we've reserved a room about a mile from the O.R. > http://www.automationdirect.com/adc/Shopping/Catalog/Terminal_Blocks/D >INnector_DIN-Rail_Terminal_Blocks/Ground_Terminal_Blocks/DN-G10 > > They are very expensive... Figures. :( Do you have an oscilloscope? Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Some mill pix are at: Genes Web page <http://geneslinuxbox.net:6309/gene/GO704-pix> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
