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#22520 02/23/03 04:35 PM
Joined: Nov 2002
Posts: 169
R
Member
I was sent some old books by an attorney friend. A couple are the 1921 NEC and Croft's American Electrician's Handbook. A few samples of contents arer listed.
The NEC for 1921 lists #12 @ 20A. for rubber insulation, 25A. for VC, & 30A. for “other insulations.” That is for AC. For DC #12 is listed @ 30A. for single conductor cable, 25A. for 2C, 23A. for 3C, and 19A. for 4C.
The copy of American Electrician’s Handbook is fantastic! It even has a chart as to how many lamps of a given wattage may be placed on circuits, ie: a 20A circuit may have 44 100W lamps on a 3 wire circuit.
In the estimating section it uses a labor rate of $7.00 per day!
Labor cost for ½” conduit is $0.05 per foot, ceiling outlet $0.15, wall outlet $0.20, S.P. switch $0.25 each and 28 per day.
I'll spend a little time reading and try to post a few interesting items.
Roedy

#22521 02/23/03 04:38 PM
Joined: Nov 2002
Posts: 169
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I think I've had one too many Heinekens. I can't spell.
Rowdy

#22522 02/23/03 09:35 PM
Joined: Nov 2001
Posts: 273
C
Member
[Linked Image] speaking of old books, i have a 1936 ge & westinghouse catalog that is very interesting.plus several meterman's hadbooks.only wish i could buy stuff out of'em. [Linked Image] cheap & top quality! [Linked Image]

[This message has been edited by circuit man (edited 02-23-2003).]

#22523 02/24/03 07:39 PM
Joined: Feb 2003
Posts: 67
P
Member
more old books,
i've got a 1901 nec.it's 3"x5 1/2" and all of 80 pages.got the 1902 list of electrical fittings thats a supplement to the 1901 nec that is all of 23 pages and the same size.i guess there wasn't much of a selection of parts approved by underwriters national electric asociation back then.many items have only one or two manufacturers.

#22524 02/24/03 11:24 PM
Joined: Oct 2000
Posts: 4,116
Likes: 4
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It might be interesting to see some sample pages out of these books if any of you could scan some and send them in.

Bill


Bill

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