Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
Date: Thu, 17 Nov 2005 10:08:43 +0100 (CET)
can not become a shock hazard if the safety-ground wire is severed by an anomaly.< But an open neutral in such a case leaves the enclosure at some undetermined voltage above ground. Depending on how
Are you advocating a second grounding/a.k.a. earthing/ of the neutral at the receptacle? Perhaps a third safety-ground wire might be advisable? Richard L. Measures, AG6K, 805.386.3734. www.somis.org
And if you are so concerned about ground-neutral faults then use ground fault breakers. However, ham radio is not too friendly to GFI's. Any RF that floats on the ground will trip the breakers. I hav
Good point. Letting those in the business decide the national code virtually assures that more business will result. I would not be surprised that - in the next 50-yrs - it will be determined by the
I believe there's some validity to Rich's point, although I'm a firm believer in 4-wire 240VAC circuits, and both of my older Alpha amplifiers are configured as such. But what bothers me about codes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Yes, I'm sure that is the reason the four-wire circuit is permitted. I still maintain the safest and best approach for future equipment would be two
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I'm afraid it actually is more complicated than you think. First of all, if your fan stops running that itself is a safety hazard, but the complicati
Good point, Bill. That's the potential danger of sharing one neutral conductor between two separate phases. Hey, perhaps an addendum to the NEC is in order to limit the use of all 120VAC current dev
Perhaps 120VAC devices were more prevalent then or the tap arrangement was too complex? Recent amps designed for use with either 120VAC or 240VAC do not appear to share this issue. Anyone know what t
I still maintain the existing NEC code allowing use of a neutral is an attempt to placate some powerful special interests in the electrical industry. It is NOT the safest approach to the issue. 73, B
The discussion about codes reminds me of what I have faced, working in hospitals for the past 35 years. Every three years, the Joint Commission on Accreditation of Healthcare Organizations (JCAHO) su
Perhaps 120VAC devices were more prevalent then or the tap arrangement was too complex? Recent amps designed for use with either 120VAC or 240VAC do not appear to share this issue. Anyone know what t
And, it also allows the equipment to work in foreign countries with two wire 240v -0 or three wire 240v -0 -0 service. 73/k5gw Good Point _______________________________________________ Amps mailing
Maybe the NEC is run by the same type of folks. John w4kv ________________________________ If anyone would like the address to where you can write the NEC for a code change or ammendment, I would be
OT, but I could not resist -- The effectiveness of JCAHO is little. What most people do not realize is that the majority of the U.S. medical facilities are safe for the patient one month out of the
You mean the USA is building homes without glitch resistors? -- 73 from Ian GM3SEK _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m
You mean the USA is building homes without glitch resistors? -- 73 from Ian GM3SEK _______________________________________________ They were, but now they will be. :-) _______________________________
Ian asked: "You mean the USA is building homes without glitch resistors?" Response: Not exactly. It seems rather circuitous to use the heaviest house wire you can find to the amp, then use a glitch r
Hmmm - maybe you jest, but it sounds very like the 'Part P' building regulations recently imposed in Blighty. There are a few exceptions for the time being, but the aim appears to be to stamp out any
I am often embarassed when, trying to be funny, I propose something outrageous - only to learn that it has already been adopted. I guess the legislators have a more warped sense of humor than I do. O