What is the maximum supply pressure allowed in a single-family dwelling downstream of the utility termination?

In a single-family dwelling, the maximum supply pressure allowed downstream of the utility termination must ensure safety and prevent damage to the gas appliances and piping systems. The correct answer, 2 psig, is aligned with regulatory standards that set limits on gas supply pressure for residential applications.

Residential gas appliances are typically designed to operate safely at lower pressures, and regulating the supply pressure to 2 psig helps prevent potential risks such as leaks or failures in appliance operation. This standard promotes a balance between adequate gas flow for appliances while prioritizing the safety of the occupants within the dwelling.

Other options present higher pressures that exceed what is generally accepted for downstream residential gas systems. These elevated pressures could increase the risk of over-pressurizing systems not designed for such levels, potentially leading to hazardous situations. Keeping the supply pressure at 2 psig ensures compliance with safety standards and effective operation of residential gas appliances.