ELECTRICAL TESTS: a. All insulated conductors, after 24 hours immersion in water at room temperature,when tested in accordance with the latest issue of Master Specifi- cations No. S-219, shall conform to the following limits per 1000 feet of conductor: Voltage Test, 5 minutes, minimum volts AC 3,000 Insulation resistance 60°F minimum megohms 182 b. All lengths of jacketed core before taping and before armoring, and all completed cable shall be immersed in water at room temperature for a period of not less than 24 hours after which period of time and while so immersed they shall be tested and shall con- form to the following limits, per 1,000 feet of cable: Voltage test, 5 minutes, minimum volts D.C. Insulation resistance, 60° F, minimum megohms 18,000 Copper resistance, 60° F, maximum ohms c. 182 2.45 In making the voltage and Insulation tests specified in (b) two tests shall be made. In the first test alternate conductors (all black conductors) shall be grounded and the voltage applied and insulation resistance measured between the remaining conductors and ground. In the second test the colored conductors shall be grounded and the voltage applied and insulation resistance measured between the black conductors and ground. DELIVERY, ETC.: a. The insulated conductor and jacketed core shall be manufactured and inspected in lengths of not less than 2,500 feet. b. The completed cable shall be delivered in lengths of 10,000 feet on 90 inch reels, and 5,000 foot lengths of 84 inch reels, as specified in the order. ec. All soldered joints necessary in the copper conductors shall be made with solder containing not less than 50 per cent by weight of tin. 18-4