No coin nor oath required. For personal study only.
Handbook H33, which is now available in printed form, consists of part 3 of the National Electrical Safety Code dealing with utilization equipment and the grounding rules contained in section 9. The detailed rules deal with conductors and protective devices used in the interior wiring of buildings and also with the control equipment, including switchboards and panel boards. Separate sections are devoted to various applications, such as motors and motor-driven machinery, electric furnaces, lighting fixtures, portable appliances,, etc. A section is also concluded on telephone and other communication apparatus. The requirements for grounding and the methods of making grounding connections are dealt with in detail.
Copies of H33 are sold by the Superintendent of Documents, Government Printing Office, Washington, D. C., at I5 cents each.
NEW RATE OF FLOW METER FOR VARIABLE DISCHARGES.
๐ SIMILAR VOLUMES