Which cable type is permitted to be used as a substitute for BLX?

The correct choice for a substitute for BLX cable is BMR. BLX cable is typically used in applications that require a flexible, durable design with certain ratings for both indoor and outdoor environments. BMR cable is specifically designed with similar performance characteristics and can be utilized in the same scenarios as BLX, making it a suitable alternative.

BMR cable provides the necessary fire resistance and is rated for use in similar applications where BLX may be employed.

Other cable types, while they may have unique features and benefits, do not meet the same specifications or intended use cases as BLX. For instance, OFCP is a fiber optic cable type that may not be appropriate for power applications where BLX is relevant. CMR refers to a riser-rated cable, which has different fire ratings and application scenarios. LX, while it might be related to specific types of cabling, does not have the directly relevant properties that align with BLX requirements. Thus, BMR stands out as the direct substitute.