EQA-5 MV-90 vs. MV-105: The Great Debate

We see many inquiries on MV URD cables where a customer wants MV-105 rated URD. These inquiries are usually in response to a competitor's spec where the EPR URD indicates:

    - 105C continuous operating temperatures
    - Can be listed by UL as Type MV-90 on special orders
    - Improved temperature rating (Insulation system has been tested and qualified for operation at 105C continuous and 140C emergency operating temperature)

Our MV URD for EPR/CN/LLDPE indicates designed to operate continuously at a conductor temperature not exceeding:

    - 105C for normal operations
    - 140C for emergency overload
    - 250C for short circuit

Our default is to mark the jacket with Type MV-90 (UL) and competitor specs may list this marking as optional. Of note, the 105C insulation performance is defined by ICEA and UL as listed above for LLDPE jacket.

Overall, these products are rated with a continuous operating temperature not to exceed 105C and none of our competitor's spec (nor ours) indicate that the product will be market 'UL MV-105'. The only UL marking that any manufacturer can put on the print legends of these products is MV-90.

When comparing to competitor specs the way they are written can be confusing, but essentially they provide the same product as LS.