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1. [Amps] (no subject) (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 7 Jun 2009 17:28:09 -0700 (PDT); I have a very large transformer that I would like to get rid of. I had it sold a couple times only to have the buyer back out at the last moment. I purchased it for a 4CX10,000D/8171 amplifier projec; /archives//html/Amps/2009-06/msg00025.html (7,545 bytes)
2. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 14:49:30 -0700 (PDT); That's what you will need if you want both 120V and 240V. Jim Smith, EE KQ6UV I need to put in a new 240V outlet at my operating position. Since one of my amp power supplies, a Johnson 2000 has th; /archives//html/Amps/2009-08/msg00169.html (8,523 bytes)
3. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 14:59:04 -0700 (PDT); David, The NEC does not permit you to protect a #10 circuit with anything larger than a 30 ampere breaker. Use #8 for a 40 ampere circuit. If you use a large circuit to feed small loads, you must t; /archives//html/Amps/2009-08/msg00170.html (9,273 bytes)
4. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 15:04:36 -0700 (PDT); Twistlocks are good when the receptacle points downward, or when you want to keep everyone from plugging something else into the outlet. Pin and sleeve outlets are probably overkill. Jim Smith, EE; /archives//html/Amps/2009-08/msg00171.html (8,733 bytes)
5. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 15:12:36 -0700 (PDT); I am a believer in safety, but a shunt trip breaker would be a better option. Jim Smith, EE KQ6UV In my case, I picked up a 100A Square D contactor on eBAY that is installed upstream of the sub-pa; /archives//html/Amps/2009-08/msg00172.html (9,189 bytes)
6. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 15:26:55 -0700 (PDT); True, but the NEC makes an exception for 15 ampere general purpose receptacles on a 20 ampere circuit. As I already mentioned, if you want to oversize the breaker and conductors, you must install a; /archives//html/Amps/2009-08/msg00173.html (8,768 bytes)
7. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 22:16:43 -0700 (PDT); David, Yes you can, but make sure the entire circuit is #12 AWG. I've seen many installations where the circuit changes to #14 AWG somewhere along the line so the electrician appropriately installs a; /archives//html/Amps/2009-08/msg00197.html (9,428 bytes)
8. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 22:23:06 -0700 (PDT); All true. Jim Smith, EE KQ6UV Please clear up one item for me in reference to conductor size... Let's say I had a bunch of extra 10ga wire and wired the whole shack with it, even the lighting circu; /archives//html/Amps/2009-08/msg00198.html (8,776 bytes)
9. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 22:37:06 -0700 (PDT); No, the fuse is to protect people. That means protecting the wiring, device, and appliance to avoid fires. The rated current of an item is not necessarily the size of the required overcurrent protect; /archives//html/Amps/2009-08/msg00201.html (10,107 bytes)
10. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 22:49:32 -0700 (PDT); The FPN actually comes from the IEEE. Everyone fom the electrical utilities to the equipment manufacturers pay attention to these standards to ensure that the equipment you plug in works with the wir; /archives//html/Amps/2009-08/msg00203.html (9,207 bytes)
11. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Sun, 9 Aug 2009 22:59:50 -0700 (PDT); You should not change the outlets. NEMA 5-20P plugs come installed only on equipment drawing just under 15 amperes up to 20 amperes. If the equipment draws this much current, it should have a dedicat; /archives//html/Amps/2009-08/msg00204.html (10,062 bytes)
12. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Mon, 10 Aug 2009 19:41:16 -0700 (PDT); Gary, First of all, the message I replied to stated that the fuse is not used to protect the device, which of course it is. I added that it is also used to protect the equipment. It is not the sole p; /archives//html/Amps/2009-08/msg00257.html (12,037 bytes)
13. Re: [Amps] I need transfer switch information (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Mon, 10 Aug 2009 19:51:54 -0700 (PDT); Ken, I hope you look a little deeper for answers than just the one or two line answers you've been getting. This is a complex issue that is the subject of many white papers. Let me know if you can't; /archives//html/Amps/2009-08/msg00258.html (8,650 bytes)
14. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Tue, 11 Aug 2009 23:12:17 -0700 (PDT); How would you know my view when I havent expressed it? Ive only relayed code requirements. Our views are irrelevant. There are many different ways to perform a load calculation per the NEC, but using; /archives//html/Amps/2009-08/msg00274.html (10,820 bytes)
15. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Tue, 11 Aug 2009 23:15:36 -0700 (PDT); Explain this to the manufacturer, and see if you can get them to change their nameplate. A surge suppressor is not a load. It protects a load. Anything with a 20 ampere plug properly installed al; /archives//html/Amps/2009-08/msg00275.html (10,383 bytes)
16. Re: [Amps] TRANSFER SWITCH (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Tue, 11 Aug 2009 23:18:01 -0700 (PDT); More often than not, the neutral overlaps momentarily. Jim Smith, EE KQ6UV ANY transfer switch that is UL approved for that use in the USA will "break before make". This is no concern here. __; /archives//html/Amps/2009-08/msg00276.html (8,126 bytes)
17. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Tue, 11 Aug 2009 23:20:51 -0700 (PDT); You can only plug 20 cords into 10 duplex outlets, and most of these loads are likely small enough and diversified enough so this wouldnt be a problem. A piece of equipment with a NEMA 5-20P plug w; /archives//html/Amps/2009-08/msg00277.html (9,043 bytes)
18. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Wed, 12 Aug 2009 17:02:45 -0700 (PDT); You are more likely to find 20 amp plugs on commercial equipment. So I wonder why anyone wants to install all 20 amp receptacles? Jim Smith, EE KQ6UV The only time I have seen a 20A 120v plug o; /archives//html/Amps/2009-08/msg00293.html (8,942 bytes)
19. Re: [Amps] TRANSFER SWITCH (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Wed, 12 Aug 2009 17:21:56 -0700 (PDT); Sorry, I don't believe that for a second, not in this country. Jim Smith, EE KQ6UV Momentarily? Here they have to be solidly connected. _______________________________________________ Amps mailing; /archives//html/Amps/2009-08/msg00295.html (8,521 bytes)
20. Re: [Amps] 240V Outlet (score: 1): Author: jimsmitheguard-a@yahoo.com; Date: Wed, 12 Aug 2009 17:41:54 -0700 (PDT); Correct, but I was trying not to complicate the matter more. This applies to continuous loads. That's something intended to run more than 3 hours straight. The data centers usually have 100% rated; /archives//html/Amps/2009-08/msg00298.html (9,041 bytes)

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