1 Scope

1.1 These requirements cover electrical equipment used for the control and monitoring of flammable liquid and LP-Gas dispensing devices rated 600 volts or less. Such control equipment is intended to be installed in ordinary locations in accordance with the National Electrical Code, NFPA 70.

1.2 These requirements also cover electrical control equipment that is capable of being installed in or over a hazardous area as defined by the Flammable and Combustible Liquids Code, NFPA 30, and Code for Motor Fuel Dispensing Facilities and Repair Garages, NFPA 30A. Electrical control equipment for installation in a Class I, Zone 1, or Zone 2 Class I, Division 1 or Division 2 hazardous area shall comply with the applicable requirements for the Hazardous Location protection method employed. See Appendix A for a list of appropriate standards.

1.3 These requirements cover general-use field-installed equipment. They also cover controls intended to be factory installed on or in certain devices as operating controls. Typical devices covered by these requirements include:

a) Communication Units – Visual, pulse, or audio devices which complies with the transmittal of data or information. Such devices include audio or visual systems between the service station attendant and the customer, and data processing systems between the service station and a remote data processing terminal.
b) Control Consoles – Prepay, post-pay, remote totalizing, or remote actuating and monitoring devices located indoors or within a structure some distance from the dispensing device.
c) Credit Acceptance Units – Dollar bill, coin, token, pulse, or credit card activated devices which are capable of being installed on, adjacent to, or away from the dispensing device.
d) Electric Computer Resets – Electrically authorized or electrically operated devices which reset a mechanical computer.

1.4 These requirements do not cover safety or emergency controls which automatically or manually interrupt the operation of a dispensing device.

1.5 The term "device" refers to any equipment covered by this standard.

1.6 These requirements do not cover purely mechanical systems such as hose nozzle attachments and pneumatic or hydraulic actuators.

Summary of Topics

This new edition of ANSI/UL 1238 dated January 19, 2022 includes the following changes:

– UL 1238 title change;– Addition of zone designations; 1.2, 5.7 and 49.1– Addition of reference to NFPA 30A; 1.2 and 6.3– Revision to the Glass Panel Test; 7.6.7– Clarification to Table 7.1, Table 7.2 and 10.1;– Clarification of requirements for components used to make an enclosure rainproof or raintight; 8.6, 38.1 and 38.3– Clarification of requirements for motors; 19.1 and 19.3– Revision to secondary circuit requirements; 23.3– Editorial clarification; 39.1.1– Revision to the Flammability Test; 41.3.5– Rain Test clarification; 43.3– Typo correction; 45.1– Updates to Appendix A