1 The price is relatively high, which is 2-5 times higher than that of ordinary flame-retardant cable.
This is the same cross-section, but the mineral insulated cable has strong overload capability, so if it is the same current carrying capacity, the cross-section is reduced and the cost is reduced.
Naturally, it will be reduced, and considering the cost of later replacement and maintenance
In fact, the cost of the two is similar, but the initial investment will be relatively large, but the life of mineral insulated cable is 50-100 years, the life of BTTZ is even more than 100 years.
Cables generally last for more than 20 years.
2 The flexibility is not good, because it uses metal tube sheath, can increase the impact resistance, but the flexibility is reduced, the installation of relatively common flame-retardant cable is laborious.
But because of the strong performance can be clearly applied or directly buried, save a lot Cable tray cost.
3 Cable joints are prone to moisture, thereby reducing fire performance and electrical performance.
So when laying and installing mineral insulated cables, the environment is not easy to be too humid.
4 The quality of small factories can not meet the standard, because the process is difficult and costly, so some manufacturers see the profitable shoddy.
So don't be greedy and small; once the consequences of security risks are unimaginable.
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