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Boxford wiring

Wiring

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kevin large07/06/2016 07:12:56
143 forum posts
3 photos
Hi all I have a boxford model a
Canary anyone post a wiring diagram it has a dewhurst forward and reverse switch and single phase motor
Brian Oldford07/06/2016 08:26:11
avatar
686 forum posts
18 photos

Try the examples shown at https://www.google.co.uk/search?q=dewhurst+drum+switch+wiring&client=firefox-b&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi0ucyZsZXNAhWLC8AKHYTlD3wQ_AUICCgC&biw=1280&bih=895#imgrc=_

Robbo07/06/2016 11:47:19
1504 forum posts
142 photos

The wiring diagram shown in the Boxford manual, for Dewhurst switches, is the standard Dewhurst wiring as shown by Myford etc and issued with the switch when new. Connected through a terminal block.

As here:

dewhurst wiring -boxford manual-001.jpg

Martin 10007/06/2016 12:21:53
287 forum posts
6 photos

I seem to recall the wiring diagram was also affixed inside Dewhurst switches, maybe on the inside of the curved cover?

Speedy Builder507/06/2016 12:34:53
2878 forum posts
248 photos

What most of these diagrams omit is an earth connection to the lathe bed itself. It is all too easy to ignore this and should a lead lamp, angle poise etc etc 'crash' onto the lathe, the lathe becomes live, your fingers are on the topside handle and suddenly you are the connection to earth!! Hmmm!
BobH

kevin large08/06/2016 17:13:45
143 forum posts
3 photos
Thanks guys
kevin large09/06/2016 18:14:25
143 forum posts
3 photos
Hi guys my motor is a gryphon don't know if this the original my problem is now I don't know what terminal is what there are 6 terminals only 4 are used so I don't know what is a1 a2 etc I can't see any markings
HELP

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