Section 4
SEC. 4. All apparatus and appurtenances used by the Equipment, grantee or hereafter used by his successors or assigns shall be modern, and the electric wires shall be insulated and carefully connected and fastened so as not to come in direct contact with any object through which a "ground" could be formed, and the wires conducting electricity shall be stretched so as not to interfere with the free use of said streets and public thoroughfares: Provided, That the grantee and his successors or assigns herein shall, whenever the Philippine Legislature or its successors so direct, place said wires conducting electricity in underground pipes or conduits at their own expense and without any cost or damage to the municipality of Albay or its districts of Daraga and Legaspi.