New Catechism of Electricity, a Practical Treatise: a Practical Treatise
New Catechism of Electricity, a Practical Treatise: a Practical Treatise
Hawkins, N. (Nehemiah), 1833-
The book New Catechism of Electricity, a Practical Treatise: a Practical Treatise was written by author Hawkins, N. (Nehemiah), 1833- Here you can read free online of New Catechism of Electricity, a Practical Treatise: a Practical Treatise book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is New Catechism of Electricity, a Practical Treatise: a Practical Treatise a good or bad book?
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b. They must have double pole switches, cut-outs, etc., arranged as required for electric lights or power apparatus employing the same current and potential. c. The attachment of feed-wires to *' heaters, ** etc., must be in plain sight, easily accessible and protected from interference, accidental or otherwise. d. Attachment of conductors to ** heaters, *' etc., must be securely made in the same manner that conductors are attached to motors or generators dealing with currents equal to those em...ployed in these devices, and such conductors most be continuous from the ** heater '* etc., to the switch or 4X4. XXW CATKCHI8M OP KLKCTUCITY* NATIONAL BOARD RRE UNDERWRITERS, cat-cut, wliich must not be within two feet of said ''heaters *• etc. These conductors must be thoroughly well insulated and also covered with a good mechanical protection. PORTABIA COOKING APPARATUS, GUTS POTS, CURUNG IRONS, BT a. The heating coils or resistances of these instruments must be inclosed in non-combustible cases, which in turn nrast be mounted on non-conducting and incombustible bases raising the same at least one inch fh>m any surface on which they stand.
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