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- Newsgroups: misc.consumers.house
- Path: sparky!uunet!walter!porthos!dasher!patter
- From: patter@dasher.cc.bellcore.com (patterson,george r)
- Subject: Re: Breakers vs fuses.
- Organization: Bellcore, Livingston, NJ
- Distribution: na
- Date: Tue, 22 Dec 92 04:12:38 GMT
- Message-ID: <1992Dec22.041238.11541@porthos.cc.bellcore.com>
- References: <1gfkgrINN2m4@symbi1.symbiosis.ahp.com> <1992Dec18.192917.18401@bcars6a8.bnr.ca> <7214@atlas.cs.nps.navy.mil>
- Sender: netnews@porthos.cc.bellcore.com (USENET System Software)
- Lines: 49
-
- In article <7214@atlas.cs.nps.navy.mil> erickson@atlas.cs.nps.navy.mil (David Erickson) writes:
- >In article <1992Dec18.192917.18401@bcars6a8.bnr.ca> clewis@ferret.ocunix.on.ca (Chris Lewis) writes:
- >
- >> - if it did, you're fuse box is in gross violation of the electrical
- >> code (being able to disconnect one side of 220V without getting the
- >> other). These rules have been around at least 20 years....
- >
- >Come on, now, Chris. Most houses built since the mid-fifties (at least)
- >have had circuit breakers, not fuses. Houses with fuses have electrical
- >systems that are at least 40 years old, perhaps much older.
-
- Not really. In at least Tennessee, Georgia, and South Carolina, fuse boxes
- were allowed for circuit protection until the mid-seventies. Many people
- put them in because they were cheaper than breakers. Most reputable builders
- used breakers, of course, by my mother's house has a mix - one breaker box
- and a fuse box (all electric constructed in 1963 to Tennessee code). If I
- remember correctly, the fuses were for the electric baseboard heaters (which
- are now gone).
-
- I wired a house myself to Tennessee code in 1969 and put in a fuse box for
- the main circuit protection. The Knoxville Utility Board made the approval.
- I wired another to South Carolina code in 1970 with a fuse box. In that
- case, Duke power company made the approval. This fits right in with Chris'
- 20 years.
-
- Trivia. The Tennessee job used "Fusstat" fuses. Anybody else remeber them?
-
- > Therefore,
- >your conclusion is faulty, since the electrical code almost invariably
- >grandfathers in installations that were correct at the time they were
- >made. The only way the fuse box would be in gross violation of the
- >code would be if it had been so at the time it was installed.
-
- If you take Chris at his word ("fuse"), you're correct. Any 220 line
- protected by two fuses can be left live when one of the two is removed.
- High amperage 220 lines, like stove lines, were typically protected with
- cartridge fuses located in a separate load box with a manual disconnect,
- but small ones like a dryer line used regular fuses in the main box. One
- could quite legally set up this dangerous situation.
-
- If Chris meant to say "breaker box", then he's right (as usual). Breakers
- protecting 220 lines must be ganged.
-
- -----------------------------------------------------------------------
- |
- George Patterson - | Society calls everything difficult good
- | and makes everything good difficult.
- |
- -----------------------------------------------------------------------
-