Carpentry and Contracting: A Practical Reference Work on Carpentry, Building Superintendence, Etc, Том 3American technical society, 1919 |
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Результати 6-10 із 51
Сторінка 282
... Conduit Wiring Showing Provision Against Moisture Usually , for low - voltage cir- cuits , it is best to put the wires in metal conduit , as shown in Fig . 45. This draw- ing also shows the drip loops which should always be pro- vided ...
... Conduit Wiring Showing Provision Against Moisture Usually , for low - voltage cir- cuits , it is best to put the wires in metal conduit , as shown in Fig . 45. This draw- ing also shows the drip loops which should always be pro- vided ...
Сторінка 295
... conduit , or through some upper portion of the wall , though the former entrance is almost always preferable . Where transformers are used they may be on poles near the building or mounted on the outside wall in a substantial manner ...
... conduit , or through some upper portion of the wall , though the former entrance is almost always preferable . Where transformers are used they may be on poles near the building or mounted on the outside wall in a substantial manner ...
Сторінка 304
... conduit . Figs . 62 and 63 show these blocks with the wires brought through them and through the lath and plaster in short lengths of flexible tubing . The switches can thus be firmly screwed to the blocks and the wires connected to ...
... conduit . Figs . 62 and 63 show these blocks with the wires brought through them and through the lath and plaster in short lengths of flexible tubing . The switches can thus be firmly screwed to the blocks and the wires connected to ...
Сторінка 305
... conduit . The same requirement applies to all small fittings such as receptacles from which flexi- ble cords are run to heaters and other portable de- vices . Fig . 66 is a sketch of such a switch box set into a lath - and - plaster ...
... conduit . The same requirement applies to all small fittings such as receptacles from which flexi- ble cords are run to heaters and other portable de- vices . Fig . 66 is a sketch of such a switch box set into a lath - and - plaster ...
Сторінка 306
... CONDUIT Fig . 66. Flush Switch Box in Lath- circuit is properly protected by 6 ampere fuses and these fuses blow , one may be and - Plaster Partition sure that more than 6 amperes , and , therefore , more than a safe current has , for ...
... CONDUIT Fig . 66. Flush Switch Box in Lath- circuit is properly protected by 6 ampere fuses and these fuses blow , one may be and - Plaster Partition sure that more than 6 amperes , and , therefore , more than a safe current has , for ...
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Carpentry and Contracting: A Practical Reference Work on Carpentry ..., Том 3 American Technical Society Попередній перегляд недоступний - 2016 |
Carpentry and Contracting; a Practical Reference Work on Carpentry ..., Том 3 American Technical Society Попередній перегляд недоступний - 2013 |
Загальні терміни та фрази
alternating current amperes arc lamps arch architect ashlar boards brick building cable carefully ceiling cellar cement chimney circuit breakers coat coil columns concrete conductors conduit connected construction copper cord covered danger devices direct current door electric feet finish fire fireproof fixtures floor beams flush frame fuses girders glass ground hazard heat heater incandescent lamps inches inside installed insulation iron joints joists Knife Switches laid lamps light lime lines material metal lathing method molding mortar motor nails necessary ordinary outlet painted partitions pipes plaster plate porcelain Portland cement protection resistance rheostats roof rubber sand sashes screws secured shellac shingles shown in Fig shows side slate sockets soldered space steel stone studs superintendent supply surface switch terra cotta thickness tiles timbers tion transformer tubing usually voltage voltmeter volts wall window wires wood wooden
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Сторінка 382 - The wiring in any building must test free from grounds; ie, the complete installation must have an insulation between conductors and between all conductors and the ground (not including attachments, sockets, receptacles, etc.) not less than that given...
Сторінка 373 - ... be thoroughly ventilated to the outdoor air, if possible, through a chimney or flue. There should be at least six inches air space on all sides of the transformer.
Сторінка 152 - ... along the surface where the junction is to be made and the surface thoroughly wet. The bond and other arrangements will depend upon the circumstances of the case. The surfaces connected should be fitted as accurately as practicable, so that by using but little mortar no disunion may take place from settling. As a rule, it is better that new work should butt against the old, either with a straight joint visible on the face, or let into a chase, sometimes called a
Сторінка 307 - Must be placed at every point where a change Is made in the size of wire (unless the cut-out In the larger wire will protect the smaller.) (c) Must be in plain sight, or enclosed in an approved cabinet, and readily accessible.
Сторінка 152 - ... so that the straight joint may not show ; but if it is necessary to bond them together the new work should be built in a quick-setting cement mortar and each part of it allowed to set before being loaded. In pointing old masonry all the decayed mortar must be completely raked out with a hooked iron point and the surfaces well wetted before the fresh mortar is applied.
Сторінка 350 - Cables may be supported in approved junction boxes on two or more insulating supports so placed that the conductors will be deflected at an angle of not less than 90 degrees, and carried a distance of not less than twice the diameter of the cable from its vertical position. Cables so suspended may be additionally secured to these insulators by tie wires.
Сторінка 96 - ... due to the difference in temperature. When water is heated it expands, and thus a given volume becomes lighter and tends to rise, and the cooler water flows in to take its place; if the application of heat is kept up, the circulation thus produced is continuous. The velocity of flow "depends upon the difference in temperature between the supply and return, and the height of the radiator above the boiler.
Сторінка 371 - Any circuit attached to any machine, or combination of machines, which develops a difference of potential, between any two wires, of over ten volts and less than 300 volts, shall be considered as a low-potential circuit...
Сторінка 144 - ... (sand and rubbish are often substituted for bricks), allowing them to find their own bearing; when the trough is filled, it is plastered over with stiff mortar, and the header course laid and the operation repeated. This practice may have some advantage in celerity in executing work, but none in strength or security.
Сторінка 4 - A Dictionary of Architecture and Building," and "How to Judge Architecture." ADF HAMLIN, AM Professor of Architecture at Columbia University. Author of "A Text-book of the History of Architecture. RALPH ADAMS CRAM Architect Author of "Church Building." CH MOORE Author of " Development and Character of Gothic Architecture." ROLLA C. CARPENTER, CE, MME Professor of Experimental Engineering. Cornell University. Author of " Heating and Ventilating Buildings.