Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 62
JOO/iPM f To Generator Fig. 84.—External connections of a variable-ratio potential regulating transformer foroperation by an automatically controlled dial switch. For connections of the contact-makingvoltmeter, see Fig. 88. POTENTIAL REGULATORS 51 7b ^^^-^W^NW^^^^lH^utMnfH^MMnu^ 7bfeec/er … OJo/Snfic/)
Electric wiring
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