. The Street railway journal . FIG. 24.—TYPE OF SINGLE-DECK CAR USED IN LYONS electrical committee, one-half the members of which arccomposed of technical representatives of the importantelectrical works of France or works using electricity, isnamed by the Minister of Post and Telegraph to give ad-vice upon the rules to be formed to carry out the intent ofthe law. Any electrical installation must be operated andmaintained in such a manner as not to cause any trouble,by induction, leakage or otherwise in pre-existing tele-graph or telephone lines. When the installation will re-quire, to fulfil
. The Street railway journal . FIG. 24.—TYPE OF SINGLE-DECK CAR USED IN LYONS electrical committee, one-half the members of which arccomposed of technical representatives of the importantelectrical works of France or works using electricity, isnamed by the Minister of Post and Telegraph to give ad-vice upon the rules to be formed to carry out the intent ofthe law. Any electrical installation must be operated andmaintained in such a manner as not to cause any trouble,by induction, leakage or otherwise in pre-existing tele-graph or telephone lines. When the installation will re-quire, to fulfil this obligation, the replacement or modifica-. October 13, 1900.] STREET RAILWAY JOURNAL. 935 tion of existing lines, such work will be done at the ex-pense of the installing company. The instructions given to carry this law in effect, so faras they interest electric tramways, are as follows: 1. The distance between an overhead conductor and atelegraph or telephone wire must never be less than one meter. 2. At crossings the possibility ofcontact between the conductor andtelephone and telegraph wires mustbe rendered impossible by somemechanical disposition, or if this isnot acceptable the service of postand telegraph will install specialfuses on their lines at the expenseof the installing company. The totality of the overhead con-ductor system must give insulationresistance of 1 megohm per kilo-meter. Underground cables must be atleast 1 meter distant from parallelpost and telegraph cables, and 50cm from the same at crossingpoints. The resistance of insulation be-tween the conductors and the earth expressed in ohms must never be le
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