. Electric railway journal . usedin coasting and braking. On the runs, line and motor interpole field, for each motor of the train. All runswere made with the covers on all motors, and in takingmotor temperatures at the ends of the runs the motorcovers were removed and the thermometers placed asrapidly as possible. These cars were each equipped with a 32-volt storagebattery which was of great assistance in providing lightfor reading the various thermometers. A separate32-volt droplight, with a long flexible cord, was providedfor each motor. These lamps were small so that theycould be readily i
. Electric railway journal . usedin coasting and braking. On the runs, line and motor interpole field, for each motor of the train. All runswere made with the covers on all motors, and in takingmotor temperatures at the ends of the runs the motorcovers were removed and the thermometers placed asrapidly as possible. These cars were each equipped with a 32-volt storagebattery which was of great assistance in providing lightfor reading the various thermometers. A separate32-volt droplight, with a long flexible cord, was providedfor each motor. These lamps were small so that theycould be readily inserted in the various spaces inside 132 Electric Railway Journal Vol. 53, No. 3 the motors and temperatures were thus able to be readwithout disturbing the thermometers. While suchreadings are being taken it is very important that alldanger of shock from coming in contact with live partsbe eliminated. The use of an auxiliary battery for thedrop lights has a great advantage in this connection mainmotor\ Li- CIRCUITS . (t) i. DIAGRAM CONNECTIONS FOR TESTING INSTRUMENTS as all potential can thus be removed from all carequipment. Before such a temperature test is started it is ad-visable to make certain that all covers can be readilyremoved from apparatus on which temperature readingsare to be taken. In the first test of this nature withwhich I was connected it was almost impossible to re-move several of the motor covers. The removal ofcovers out on the line is quite a different propositionfrom their removal in a shop provided with proper
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