When, from good and sufficient cause, it is necessary to have electricity on any installation before final certificate can be issued, the Electrical Inspector may issue a temporary permit, provided that all the parts to which the current is applied are in a safe and satisfactory condition.  Before the temporary permit is issued, the party receiving the same shall pay the Electrical Inspector $1, the permit to run for 30 days.  If at the end of 30 days the installation is still incomplete, another permit must be taken out for the next 30 days, and for each succeeding 30 days.
(`90 Code, § 4-31)